Data Quality Reports for Session: 105984 User: wlj Completed: 06/08/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020823.20NSA/AERI/C1 - AERI Detector Cooler Failurensaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D020823.21NSA/AERI/C1 - Data Spikes due to power outagensaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D020823.23NSA/AERI/C1 - Data Suspect Due to Instrument Maintenancensaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D020823.25NSA/AERI/C1 - Loss of Temperature Stabilizationnsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D020823.26NSA/AERI/C1 - Data discontinuousnsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D020823.27NSA/AERI/C1 - External Temperature Sensor Failednsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D021113.6NSA/AERI/C1 - AERI extended range detector at Barrownsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D030203.1NSA/AERI/C1 - Failure of AERI cryogenic coolernsaaeriC1.00, nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D030203.2NSA/AERI/C1 - Failure of AERI cryogenic coolernsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D030415.1NSA/AERI/C1 - Failure of AERI cryogenic coolernsaaeriC1.00, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
D040909.1NSA/AERI/C1 - Data file header manipulatednsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1


DQRID : D020823.20
Start DateStart TimeEnd DateEnd Time
10/18/2001000010/24/20012359
Subject:
NSA/AERI/C1 - AERI Detector Cooler Failure
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
.The data is very noisy due to failure of the detector
cooler to keep the detector at the set temperature.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D020823.21
Start DateStart TimeEnd DateEnd Time
08/19/1999183008/19/19992000
Subject:
NSA/AERI/C1 - Data Spikes due to power outage
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
Spike in continuous data record from a power outage.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D020823.23
Start DateStart TimeEnd DateEnd Time
12/08/1999000012/11/19992359
Subject:
NSA/AERI/C1 - Data Suspect Due to Instrument Maintenance
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
Conner and Ralph worked on the AERI during this week, so the data quality is questionable 
during this time period.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D020823.25
Start DateStart TimeEnd DateEnd Time
04/19/2001170004/30/20012359
Subject:
NSA/AERI/C1 - Loss of Temperature Stabilization
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
Instrument lost temperature stabilization on 4/19 @ 1700 and data became
very noisy and was shut down at 2300 (GMT). Turned back on 4/21 still look like detector 
temperature is to high, data very noisy. Production of good data resumed on 05/01/01.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D020823.26
Start DateStart TimeEnd DateEnd Time
08/20/1999160008/20/19992359
Subject:
NSA/AERI/C1 - Data discontinuous
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
Large unreasonable step in continous data record with slow progression toward original 
state.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D020823.27
Start DateStart TimeEnd DateEnd Time
10/16/1999000012/10/19992359
09/07/2001000009/09/20012359
10/28/2001013010/28/20010200
Subject:
NSA/AERI/C1 - External Temperature Sensor Failed
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
There appear to have been some problem with the external temperature sensor. The outside 
temperature sensor data is not used in the derivation of the spectral IR data and are just 
a diagnostic tool. We have not found what
caused this behaviour.
Measurements:nsaaerisummaryC1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
nsaaerich1C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
nsaaeriengineerC1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)

Back To Table of Contents

DQRID : D021113.6
Start DateStart TimeEnd DateEnd Time
04/18/2002013205/16/20021830
Subject:
NSA/AERI/C1 - AERI extended range detector at Barrow
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
The extended range detector had failed and a borrowed replacement detector was installed. 
The replacement detector had enough air present in the dewar to cause the cryogenic 
cooler to work at full current. The detector was still warmer than optimal and there is more 
noise present in the data than is considered normal. The data must be used with 
discretion. The system was shut off on 020516 due to noise and rising detector temperatures.
Measurements:nsaaerisummaryC1.a1:
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
nsaaerich2C1.a1:
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
nsaaeriengineerC1.a1:
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)

Back To Table of Contents

DQRID : D030203.1
Start DateStart TimeEnd DateEnd Time
01/20/2003183501/25/20030041
Subject:
NSA/AERI/C1 - Failure of AERI cryogenic cooler
DataStreams:nsaaeriC1.00, nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
Failure of the cryogenic cooler for the AERI detector resulted in the instrument being 
shut down during the interval January 20, 2003 @1835GMT until January 25, 2003 @0041GMT, 
when a new cryogenic cooler was installed. All data are missing for this period. Data after 
the new cooler was installed are within normal acceptable limits.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

Back To Table of Contents

DQRID : D030203.2
Start DateStart TimeEnd DateEnd Time
01/17/2003174901/20/20031835
Subject:
NSA/AERI/C1 - Failure of AERI cryogenic cooler
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
In January 2003, the cryogenic cooler current for the Barrow, AERI detector was steadily 
increasing. This increase is a sign of cooler failure. On January 16,2003, the cooler 
began to make noise. The cooler was shut-off on January 17,2003 and any condensed gases were 
allowed to vent. Condensed gases in the detector dewar cause a cooler to work harder and 
increase the current. The cooler was then resealed and turned on. However, the cooler did 
not recover and the current was at a maximum. The cooler was unable to completely cool 
the detector and the detector never achieved a temperature below 72K. Higher detector 
temperature increases instrument noise. The instrument was shut off on January 20, 2003 at 
1835GMT to prevent a catatrophic failure due to complete cooler failure and 
repressurization of the detector dewar, which would result in a subsequent implosion of the dewar.
Measurements:nsaaerisummaryC1.a1:
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
nsaaerich1C1.a1:
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
nsaaerich2C1.a1:
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
nsaaeriengineerC1.a1:
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)

Back To Table of Contents

DQRID : D030415.1
Start DateStart TimeEnd DateEnd Time
03/27/2003210204/10/20032214
Subject:
NSA/AERI/C1 - Failure of AERI cryogenic cooler
DataStreams:nsaaeriC1.00, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
The cryogenic cooler current reached its maximum value, which indicates a potential 
failure of the cooler unit. The effect of the cooler failure is an increase in detector 
temperature. Detector temperature is normally 69K. At temperatures in excess of 72K, the long 
wave responsivity decreases due to detector noise. During the period of March 27, 2003 @ 
21:02 GMT through April 10, 2003 @ 23:42 GMT, the cooler current was at its maximum and 
detector temperatures varied from 72-75K. The increase in detector noise may affect some 
calculations.
Measurements:nsaaerisummaryC1.a1:
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
nsaaeriC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
nsaaeriengineerC1.a1:
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Stirling cycle cooler current(coolerCurrent)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)

Back To Table of Contents

DQRID : D040909.1
Start DateStart TimeEnd DateEnd Time
03/21/1999000003/21/19992359
03/24/1999000003/24/19992359
Subject:
NSA/AERI/C1 - Data file header manipulated
DataStreams:nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaerisummaryC1.a1, nsaaeriengineerC1.a1
Description:
The NSA.C1 AERI data for 19990321 and 19990324 were processed on
July 23, 2004 using version 1.24 of the ingest.  This resulted
in the creation of .b1 level data files.  Because the other March
1999 data are .a1 level data files, the .b1 files were modified
using nc_tools (nc_copy, ncvarrename, ncattcopy) to create .a1
level data files.

The data in the files were not changed in anyway.  Only header
modifications were made.  The user may notice small header differences
between these files and others from March 1999.
Measurements:nsaaerisummaryC1.a1:
  • Averaged Wave number in inverse centimeters(wnumsum12)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Duration of scene view(sceneViewDuration)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum11)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
  • Time at center of AERI sky observation period(Time)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
  • Time offset of tweaks from base_time(time_offset)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Observation longitude(Longitude)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Averaged Wave number in inverse centimeters(wnumsum6)
  • Character string containing instrument name(instrumentUnitNumber)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Observation Altitude(Altitude)
  • Julian Day including day and fraction of day(JulianDay)
  • Averaged Wave number in inverse centimeters(wnumsum9)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
  • north latitude for all the input platforms.(lat)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Averaged Wave number in inverse centimeters(wnumsum7)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • east longitude for all the input platforms.(lon)
  • Observation latitude(Latitude)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • Averaged Wave number in inverse centimeters(wnumsum4)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
  • AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum10)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum8)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Time offset from base_time(base_time)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Averaged Wave number in inverse centimeters(wnumsum3)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
  • Averaged Wave number in inverse centimeters(wnumsum5)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum14)
  • AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
  • AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
  • Averaged Wave number in inverse centimeters(wnumsum2)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • AERI instrument data channel number(channelNumber)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
  • Averaged Wave number in inverse centimeters(wnumsum13)
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
  • AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
  • AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
  • altitude above sea levelaltunits(alt)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Averaged Wave number in inverse centimeters(wnumsum1)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
  • Observation date(dateYYMMDD)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
nsaaerich1C1.a1:
  • east longitude for all the input platforms.(lon)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • AERI instrument unit serial number(AERIunitNumber)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation Altitude(Altitude)
  • north latitude for all the input platforms.(lat)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Observation date(dateYYMMDD)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Time offset from base_time(base_time)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • AERI instrument data channel number(channelNumber)
  • Time offset of tweaks from base_time(time_offset)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • Version number of Operational Software(systemReleaseNumber)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Time at center of AERI sky observation period(Time)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Character string containing instrument name(instrumentUnitNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • altitude above sea levelaltunits(alt)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Duration of scene view(sceneViewDuration)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation latitude(Latitude)
  • wavenumbers for mean radiance spectra(wnum)
  • Observation longitude(Longitude)
nsaaeriengineerC1.a1:
  • Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
  • Ambient blackbody temperature - apex(ABBapexTemp)
  • Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
  • Coadditions count Number of complete(forward+backward) interferogram scans in a
    sample average.(coadditionsCount)
  • Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
  • Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • altitude above sea levelaltunits(alt)
  • Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
  • Version number of Operational Software(systemReleaseNumber)
  • Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
  • Radiance standard deviation during hot blackbody view averaged over (700_705
    cm-1)(HBBviewStdDevRadiance700_705)
  • Difference between actual and ideal motor encoder values for current view
    indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
  • Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
  • Interferometer window temperature measured on the outside of the aluminum window
    flange(interferometerWindowTemp)
  • Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
  • Radiance standard deviation during ambient blackbody view averaged over (675_680
    cm-1)(ABBviewStdDevRadiance675_680)
  • Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
  • Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
  • Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
  • AERI instrument data channel number(channelNumber)
  • Shortwave elevated air brightness temperature from radiance average (2282_2287
    cm^-1)(elevatedLayerAirTemp2282_2287)
  • Time at center of AERI sky observation period(Time)
  • Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
  • Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Scene mirror motor case temperature(mirrorMotorTemp)
  • Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
  • Interferometer front end fan airflow heated temperature: used with unheated
    temperature as measure of airflow.(frontEndFanAirHeatedTemp)
  • Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Radiance standard deviation during hot blackbody view averaged over (985_990
    cm-1)(HBBviewStdDevRadiance985_990)
  • AERI ingest computer temperature measured at back panel of computer(computerTemp)
  • Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
  • Logical flag indicating whether shortwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using SWskyNEN and
    SWskyNENlimit.(SWskyNENacceptable)
  • Radiance standard deviation during ambient blackbody view averaged over (985_990
    cm-1)(ABBviewStdDevRadiance985_990)
  • Hot blackbody temperature - rim bottom(HBBbottomTemp)
  • Scene mirror motor driver heat sink temperature(motorDriverTemp)
  • The noise equivalent radiance observed in the longwave channel during a sky view
    at 1000 cm^-1(LWskyNEN)
  • Shortwave surface air brightness temperature from radiance average (2295_2300
    cm^-1)(surfaceLayerAirTemp2295_2300)
  • Rain sensor analog output: the rain sensor is located inside the hatch near the
    sky aperture and is used to flag the critical condition of rain falling on
    the AERI s(rainSensorIntensity)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
  • Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
  • Radiance standard deviation during hot blackbody view averaged over (2295_2300
    cm-1)(HBBviewStdDevRadiance2295_2300)
  • Observation date(dateYYMMDD)
  • Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
  • Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • Hot blackbody temperature - rim top(HBBtopTemp)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
  • Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
  • Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
  • Logical flag indicating whether HBB temperature is stable (true) or not stable
    (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
  • Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
  • Sun sensor analog output: The sun sensor has a view angle to the sky slightly
    larger than the interferometer FOV and is aligned to the interferometer
    line-of-sight. I(sunSensorIntensity)
  • north latitude for all the input platforms.(lat)
  • Longwave elevated air brightness temperature from radiance average (700_705
    cm^-1)(elevatedLayerAirTemp700_705)
  • Radiance standard deviation during hot blackbody view averaged over (675_680
    cm-1)(HBBviewStdDevRadiance675_680)
  • Characteristic value representing overall longwave channel responsivity(LWresponsivity)
  • Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
  • Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
  • Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
  • Scene Mirror Position Count Number of viewers in a sequence(sceneMirPosCount)
  • Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
  • Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
  • Stirling cycle cooler current(coolerCurrent)
  • Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
  • The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
    centered on the sky view(HBBtempDrift)
  • Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
  • Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
  • Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
  • Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
  • Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
  • AERI interferometer temperature at second port(interferometerSecondPortTemp)
  • Weight factor for bottom used in calculating ambient blackbody temperature
    average(ABBbottomTempWeight)
  • Ambient blackbody temperature - rim top(ABBtopTemp)
  • Corrective offset for final hot blackbody average temperature(HBBtempOffset)
  • Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
  • Time offset of tweaks from base_time(time_offset)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Logical flag indicating whether longwave channel noise equivalent radiance is
    acceptable in sky view (true/false). Determined using LWskyNEN and
    LWskyNENlimit.(LWskyNENacceptable)
  • east longitude for all the input platforms.(lon)
  • Field of view half angle used in finite FOV correction(FFOVhalfAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
  • Ambient air temperature near the interferometer(airNearInterferometerTemp)
  • Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
  • Observation longitude(Longitude)
  • Signal conditioning electronics inside air temperature(SCEtemp)
  • Number of terms used in finite field of view correction(numberOfTerms)
  • Radiance standard deviation during hot blackbody view averaged over (2510_2515
    cm-1)(HBBviewStdDevRadiance2510_2515)
  • Scene mirror position encoder value(sceneMirPosEncoder)
  • Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
  • Time offset from base_time(base_time)
  • Ambient blackbody temperature(ABBbottomTemp)
  • Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
  • Hot blackbody temperature - apex(HBBapexTemp)
  • Observation latitude(Latitude)
  • Instrument scene mirror position identifier(sceneMirrorPosition)
  • Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
  • Detector temperature sensed via diode near detector(detectorTemp)
  • Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
  • Ambient air temperature near blackbodies(airNearBBsTemp)
  • Blackbody cavity geometry factor(BBcavityFactor)
  • Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
  • Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
  • Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
  • Stirling cycle cooler expander temperature(coolerExpanderTemp)
  • Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
    indicative of front end air flow.(frontEndFanAirTempDiff)
  • Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
  • Julian Day including day and fraction of day(JulianDay)
  • Radiance standard deviation during ambient blackbody view averaged over (700_705
    cm-1)(ABBviewStdDevRadiance700_705)
  • Size of buffer holding initial spectrum(originalInterferogramSize)
  • Duration of scene view(sceneViewDuration)
  • Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
  • Radiance standard deviation during ambient blackbody view averaged over
    (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
  • Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
  • Radiance standard deviation during hot blackbody view averaged over (2282_2287
    cm-1)(HBBviewStdDevRadiance2282_2287)
  • Longwave surface air brightness temperature from radiance average (675_680
    cm^-1)(surfaceLayerAirTemp675_680)
  • The noise equivalent radiance observed in the shortwave channel during a sky
    view at 2500 cm^-1(SWskyNEN)
  • Observation Altitude(Altitude)
  • Character string containing instrument name(instrumentUnitNumber)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Spare temperature sensor (location TBD)(spareTemp)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
  • Logical flag indicating whether any data is available at current time
    (true/false)(dataAvailable)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
  • Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
  • Interferometer front end fan airflow unheated temperature: used with heated
    temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
nsaaerich2C1.a1:
  • Ambient air temperature at hatch opening(outsideAirTemp)
  • AERI instrument data channel number(channelNumber)
  • Ambient temperature used in calibration(calibrationAmbientTemp)
  • Difference between the sky view\'s radiance variance and the hot black body
    view\'s variance(standard_dev_mean_rad)
  • Hot blackbody temperature used in calibration(calibrationHBBtemp)
  • wavenumbers for mean radiance spectra(wnum)
  • north latitude for all the input platforms.(lat)
  • Cold blackbody temperature used in calibration(calibrationCBBtemp)
  • Julian Day including day and fraction of day(JulianDay)
  • Observation date(dateYYMMDD)
  • Character string containing instrument name(instrumentUnitNumber)
  • Time at center of AERI sky observation period(Time)
  • Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
  • altitude above sea levelaltunits(alt)
  • Maximum departure from ideal of the mirror position over the course of all
    contributing views. Typically two hot, two ambient, and one scene view are
    examine(sceneMirPosEncoderMaxDrift)
  • Observation Altitude(Altitude)
  • wavenumbers for standard deviation of radiance spectra(wnum2)
  • Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
    -1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen)
  • Observation longitude(Longitude)
  • Time offset from base_time(base_time)
  • Duration of scene view(sceneViewDuration)
  • Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
  • Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
  • Time at center of AERI sky observation period(timeHHMMSS)
  • Observation latitude(Latitude)
  • Scene mirror view angle in non-negative degrees, measured clockwise looking into
    interferometer window.(sceneMirrorAngle)
  • AERI instrument unit serial number(AERIunitNumber)
  • Version number of Operational Software(systemReleaseNumber)
  • east longitude for all the input platforms.(lon)
  • Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
    only.(atmosphericRelativeHumidity)
  • Time offset of tweaks from base_time(time_offset)
  • Observation atmospheric pressure in AERI electronics(atmosphericPressure)
  • Temperature of the AERI blackbody support structure(BBsupportStructureTemp)

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