DQR ID | Subject | Data Streams Affected |
---|
D020823.20 | NSA/AERI/C1 - AERI Detector Cooler Failure | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
D020823.25 | NSA/AERI/C1 - Loss of Temperature Stabilization | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
D020823.27 | NSA/AERI/C1 - External Temperature Sensor Failed | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
D021113.6 | NSA/AERI/C1 - AERI extended range detector at Barrow | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
D030203.1 | NSA/AERI/C1 - Failure of AERI cryogenic cooler | nsaaeriC1.00, nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
D030203.2 | NSA/AERI/C1 - Failure of AERI cryogenic cooler | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1 |
Subject: | NSA/AERI/C1 - AERI Detector Cooler Failure |
DataStreams: | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.a1
|
Description: | .The data is very noisy due to failure of the detector
cooler to keep the detector at the set temperature. |
Measurements: | nsaaerich2C1.a1: - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Time at center of AERI sky observation period(Time)
- Julian Day including day and fraction of day(JulianDay)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- AERI instrument unit serial number(AERIunitNumber)
- base time(base_time)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Wave number(wnum)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Character string containing instrument name(instrumentUnitNumber)
- Observation latitude(Latitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Mean of radiance spectra ensemble(mean_rad)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- lat(lat)
- Time (HHMMSS)(timeHHMMSS)
- Dummy altitude for Zeb(alt)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- lon(lon)
- Observation Altitude(Altitude)
- Time offset of tweaks from base_time(time_offset)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Observation date(dateYYMMDD)
- Version number of Operational Software(systemReleaseNumber)
- Duration of scene view(sceneViewDuration)
- 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) - BB Support Structure Temperature(BBsupportStructureTemp)
- AERI instrument data channel number(channelNumber)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Observation longitude(Longitude)
nsaaerisummaryC1.a1: - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
- Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Dummy altitude for Zeb(alt)
- 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 HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- Wave number in reciprocal centimeters(wnumsum2)
- Wave number in reciprocal centimeters(wnumsum1)
- Wave number in reciprocal centimeters(wnumsum4)
- Wave number in reciprocal centimeters(wnumsum3)
- Wave number in reciprocal centimeters(wnumsum6)
- Wave number in reciprocal centimeters(wnumsum5)
- Wave number in reciprocal centimeters(wnumsum8)
- Wave number in reciprocal centimeters(wnumsum7)
- Wave number in reciprocal centimeters(wnumsum9)
- Observation Altitude(Altitude)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Julian Day including day and fraction of day(JulianDay)
- 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)
- Version number of Operational Software(systemReleaseNumber)
- 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) - AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
- xxx(dataAvailable)
- Time at center of AERI sky observation period(Time)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - base time(base_time)
- Time (HHMMSS)(timeHHMMSS)
- Duration of scene view(sceneViewDuration)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Observation date(dateYYMMDD)
- Time offset of tweaks from base_time(time_offset)
- Ambient air temperature at hatch opening(outsideAirTemp)
- 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) - Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- AERI instrument data channel number(channelNumber)
- Observation longitude(Longitude)
- 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) - Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
- Observation latitude(Latitude)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Wave number in reciprocal centimeters(wnumsum13)
- Wave number in reciprocal centimeters(wnumsum12)
- Wave number in reciprocal centimeters(wnumsum11)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Wave number in reciprocal centimeters(wnumsum10)
- Wave number in reciprocal centimeters(wnumsum14)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
- AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
- Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- lon(lon)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
- lat(lat)
- AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
- Character string containing instrument name(instrumentUnitNumber)
nsaaerich1C1.a1: - Julian Day including day and fraction of day(JulianDay)
- 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) - Time at center of AERI sky observation period(Time)
- Time (HHMMSS)(timeHHMMSS)
- Version number of Operational Software(systemReleaseNumber)
- Time offset of tweaks from base_time(time_offset)
- Duration of scene view(sceneViewDuration)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Observation longitude(Longitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Mean of radiance spectra ensemble(mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Observation Altitude(Altitude)
- Observation date(dateYYMMDD)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- base time(base_time)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Dummy altitude for Zeb(alt)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - AERI instrument unit serial number(AERIunitNumber)
- lat(lat)
- lon(lon)
- Observation latitude(Latitude)
- AERI instrument data channel number(channelNumber)
- Character string containing instrument name(instrumentUnitNumber)
- Wave number(wnum)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
nsaaeriengineerC1.a1: - Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
- Time (HHMMSS)(timeHHMMSS)
- Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
- Ambient air temperature near blackbodies(airNearBBsTemp)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - base time(base_time)
- Stirling cycle cooler current(coolerCurrent)
- Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
- Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
- 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) - Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- Stirling cycle cooler expander temperature(coolerExpanderTemp)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Radiance standard deviation during ambient blackbody view averaged over
(2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515) - Number of terms used in finite field of view correction(numberOfTerms)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- AERI instrument data channel number(channelNumber)
- Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
- The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
centered on the sky view(HBBtempDrift) - Observation date(dateYYMMDD)
- Ambient blackbody temperature - rim top(ABBtopTemp)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Interferometer front end fan airflow heated temperature: used with unheated
temperature as measure of airflow.(frontEndFanAirHeatedTemp) - Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
- Interferometer window temperature measured on the outside of the aluminum window
flange(interferometerWindowTemp) - Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- Interferometer front end fan airflow unheated temperature: used with heated
temperature as measure of airflow.(frontEndFanAirUnheatedTemp) - 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) - Character string containing instrument name(instrumentUnitNumber)
- Radiance standard deviation during ambient blackbody view averaged over (700_705
cm-1)(ABBviewStdDevRadiance700_705) - Detector temperature sensed via diode near detector(detectorTemp)
- Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
- xxx(dataAvailable)
- Observation latitude(Latitude)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- Size of buffer holding initial spectrum(originalInterferogramSize)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
- Hot blackbody temperature - rim top(HBBtopTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
- Radiance standard deviation during hot blackbody view averaged over (675_680
cm-1)(HBBviewStdDevRadiance675_680) - Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- Radiance standard deviation during ambient blackbody view averaged over
(2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300) - Hot blackbody temperature - apex(HBBapexTemp)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
- Time at center of AERI sky observation period(Time)
- Instrument scene mirror position identifier(sceneMirrorPosition)
- Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
- Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
- Observation longitude(Longitude)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - Ambient blackbody temperature(ABBbottomTemp)
- 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) - Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Radiance standard deviation during hot blackbody view averaged over (700_705
cm-1)(HBBviewStdDevRadiance700_705) - AERI interferometer temperature at second port(interferometerSecondPortTemp)
- Ambient blackbody temperature - apex(ABBapexTemp)
- Scene mirror motor case temperature(mirrorMotorTemp)
- Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
- Radiance standard deviation during ambient blackbody view averaged over (985_990
cm-1)(ABBviewStdDevRadiance985_990) - Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Hot blackbody temperature - rim bottom(HBBbottomTemp)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
- Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Dummy altitude for Zeb(alt)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Radiance standard deviation during hot blackbody view averaged over (2282_2287
cm-1)(HBBviewStdDevRadiance2282_2287) - Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
- Radiance standard deviation during ambient blackbody view averaged over
(2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287) - Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
- Time offset of tweaks from base_time(time_offset)
- AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during hot blackbody view averaged over (2295_2300
cm-1)(HBBviewStdDevRadiance2295_2300) - AERI ingest computer temperature measured at back panel of computer(computerTemp)
- Spare temperature sensor (location TBD)(spareTemp)
- Scene mirror motor driver heat sink temperature(motorDriverTemp)
- Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
- Radiance standard deviation during hot blackbody view averaged over (2510_2515
cm-1)(HBBviewStdDevRadiance2510_2515) - Version number of Operational Software(systemReleaseNumber)
- Ambient air temperature near the interferometer(airNearInterferometerTemp)
- Signal conditioning electronics inside air temperature(SCEtemp)
- Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
- Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Duration of scene view(sceneViewDuration)
- Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
- Number of views in a sequence(sceneMirPosCount)
- Field of view half angle used in finite FOV correction(FFOVhalfAngle)
- Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- lon(lon)
- Weight factor for bottom used in calculating ambient blackbody temperature
average(ABBbottomTempWeight) - Observation Altitude(Altitude)
- Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
- Radiance standard deviation during hot blackbody view averaged over (985_990
cm-1)(HBBviewStdDevRadiance985_990) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - Blackbody cavity geometry factor(BBcavityFactor)
- Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Radiance standard deviation during ambient blackbody view averaged over (675_680
cm-1)(ABBviewStdDevRadiance675_680) - Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
- Julian Day including day and fraction of day(JulianDay)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Corrective offset for final hot blackbody average temperature(HBBtempOffset)
- Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
- Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
- Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
- lat(lat)
- Scene mirror position encoder value(sceneMirPosEncoder)
- Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
- Ambient air temperature at hatch opening(outsideAirTemp)
|
Subject: | NSA/AERI/C1 - Loss of Temperature Stabilization |
DataStreams: | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.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: | nsaaerich2C1.a1: - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Time at center of AERI sky observation period(Time)
- Julian Day including day and fraction of day(JulianDay)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- AERI instrument unit serial number(AERIunitNumber)
- base time(base_time)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Wave number(wnum)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Character string containing instrument name(instrumentUnitNumber)
- Observation latitude(Latitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Mean of radiance spectra ensemble(mean_rad)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- lat(lat)
- Time (HHMMSS)(timeHHMMSS)
- Dummy altitude for Zeb(alt)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- lon(lon)
- Observation Altitude(Altitude)
- Time offset of tweaks from base_time(time_offset)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Observation date(dateYYMMDD)
- Version number of Operational Software(systemReleaseNumber)
- Duration of scene view(sceneViewDuration)
- 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) - BB Support Structure Temperature(BBsupportStructureTemp)
- AERI instrument data channel number(channelNumber)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Observation longitude(Longitude)
nsaaerisummaryC1.a1: - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
- Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Dummy altitude for Zeb(alt)
- 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 HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- Wave number in reciprocal centimeters(wnumsum2)
- Wave number in reciprocal centimeters(wnumsum1)
- Wave number in reciprocal centimeters(wnumsum4)
- Wave number in reciprocal centimeters(wnumsum3)
- Wave number in reciprocal centimeters(wnumsum6)
- Wave number in reciprocal centimeters(wnumsum5)
- Wave number in reciprocal centimeters(wnumsum8)
- Wave number in reciprocal centimeters(wnumsum7)
- Wave number in reciprocal centimeters(wnumsum9)
- Observation Altitude(Altitude)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Julian Day including day and fraction of day(JulianDay)
- 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)
- Version number of Operational Software(systemReleaseNumber)
- 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) - AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
- xxx(dataAvailable)
- Time at center of AERI sky observation period(Time)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - base time(base_time)
- Time (HHMMSS)(timeHHMMSS)
- Duration of scene view(sceneViewDuration)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Observation date(dateYYMMDD)
- Time offset of tweaks from base_time(time_offset)
- Ambient air temperature at hatch opening(outsideAirTemp)
- 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) - Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- AERI instrument data channel number(channelNumber)
- Observation longitude(Longitude)
- 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) - Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
- Observation latitude(Latitude)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Wave number in reciprocal centimeters(wnumsum13)
- Wave number in reciprocal centimeters(wnumsum12)
- Wave number in reciprocal centimeters(wnumsum11)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Wave number in reciprocal centimeters(wnumsum10)
- Wave number in reciprocal centimeters(wnumsum14)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
- AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
- Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- lon(lon)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
- lat(lat)
- AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
- Character string containing instrument name(instrumentUnitNumber)
nsaaerich1C1.a1: - Julian Day including day and fraction of day(JulianDay)
- 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) - Time at center of AERI sky observation period(Time)
- Time (HHMMSS)(timeHHMMSS)
- Version number of Operational Software(systemReleaseNumber)
- Time offset of tweaks from base_time(time_offset)
- Duration of scene view(sceneViewDuration)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Observation longitude(Longitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Mean of radiance spectra ensemble(mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Observation Altitude(Altitude)
- Observation date(dateYYMMDD)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- base time(base_time)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Dummy altitude for Zeb(alt)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - AERI instrument unit serial number(AERIunitNumber)
- lat(lat)
- lon(lon)
- Observation latitude(Latitude)
- AERI instrument data channel number(channelNumber)
- Character string containing instrument name(instrumentUnitNumber)
- Wave number(wnum)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
nsaaeriengineerC1.a1: - Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
- Time (HHMMSS)(timeHHMMSS)
- Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
- Ambient air temperature near blackbodies(airNearBBsTemp)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - base time(base_time)
- Stirling cycle cooler current(coolerCurrent)
- Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
- Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
- 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) - Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- Stirling cycle cooler expander temperature(coolerExpanderTemp)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Radiance standard deviation during ambient blackbody view averaged over
(2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515) - Number of terms used in finite field of view correction(numberOfTerms)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- AERI instrument data channel number(channelNumber)
- Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
- The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
centered on the sky view(HBBtempDrift) - Observation date(dateYYMMDD)
- Ambient blackbody temperature - rim top(ABBtopTemp)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Interferometer front end fan airflow heated temperature: used with unheated
temperature as measure of airflow.(frontEndFanAirHeatedTemp) - Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
- Interferometer window temperature measured on the outside of the aluminum window
flange(interferometerWindowTemp) - Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- Interferometer front end fan airflow unheated temperature: used with heated
temperature as measure of airflow.(frontEndFanAirUnheatedTemp) - 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) - Character string containing instrument name(instrumentUnitNumber)
- Radiance standard deviation during ambient blackbody view averaged over (700_705
cm-1)(ABBviewStdDevRadiance700_705) - Detector temperature sensed via diode near detector(detectorTemp)
- Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
- xxx(dataAvailable)
- Observation latitude(Latitude)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- Size of buffer holding initial spectrum(originalInterferogramSize)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
- Hot blackbody temperature - rim top(HBBtopTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
- Radiance standard deviation during hot blackbody view averaged over (675_680
cm-1)(HBBviewStdDevRadiance675_680) - Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- Radiance standard deviation during ambient blackbody view averaged over
(2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300) - Hot blackbody temperature - apex(HBBapexTemp)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
- Time at center of AERI sky observation period(Time)
- Instrument scene mirror position identifier(sceneMirrorPosition)
- Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
- Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
- Observation longitude(Longitude)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - Ambient blackbody temperature(ABBbottomTemp)
- 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) - Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Radiance standard deviation during hot blackbody view averaged over (700_705
cm-1)(HBBviewStdDevRadiance700_705) - AERI interferometer temperature at second port(interferometerSecondPortTemp)
- Ambient blackbody temperature - apex(ABBapexTemp)
- Scene mirror motor case temperature(mirrorMotorTemp)
- Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
- Radiance standard deviation during ambient blackbody view averaged over (985_990
cm-1)(ABBviewStdDevRadiance985_990) - Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Hot blackbody temperature - rim bottom(HBBbottomTemp)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
- Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Dummy altitude for Zeb(alt)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Radiance standard deviation during hot blackbody view averaged over (2282_2287
cm-1)(HBBviewStdDevRadiance2282_2287) - Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
- Radiance standard deviation during ambient blackbody view averaged over
(2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287) - Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
- Time offset of tweaks from base_time(time_offset)
- AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during hot blackbody view averaged over (2295_2300
cm-1)(HBBviewStdDevRadiance2295_2300) - AERI ingest computer temperature measured at back panel of computer(computerTemp)
- Spare temperature sensor (location TBD)(spareTemp)
- Scene mirror motor driver heat sink temperature(motorDriverTemp)
- Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
- Radiance standard deviation during hot blackbody view averaged over (2510_2515
cm-1)(HBBviewStdDevRadiance2510_2515) - Version number of Operational Software(systemReleaseNumber)
- Ambient air temperature near the interferometer(airNearInterferometerTemp)
- Signal conditioning electronics inside air temperature(SCEtemp)
- Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
- Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Duration of scene view(sceneViewDuration)
- Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
- Number of views in a sequence(sceneMirPosCount)
- Field of view half angle used in finite FOV correction(FFOVhalfAngle)
- Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- lon(lon)
- Weight factor for bottom used in calculating ambient blackbody temperature
average(ABBbottomTempWeight) - Observation Altitude(Altitude)
- Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
- Radiance standard deviation during hot blackbody view averaged over (985_990
cm-1)(HBBviewStdDevRadiance985_990) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - Blackbody cavity geometry factor(BBcavityFactor)
- Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Radiance standard deviation during ambient blackbody view averaged over (675_680
cm-1)(ABBviewStdDevRadiance675_680) - Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
- Julian Day including day and fraction of day(JulianDay)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Corrective offset for final hot blackbody average temperature(HBBtempOffset)
- Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
- Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
- Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
- lat(lat)
- Scene mirror position encoder value(sceneMirPosEncoder)
- Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
- Ambient air temperature at hatch opening(outsideAirTemp)
|
Subject: | NSA/AERI/C1 - Failure of AERI cryogenic cooler |
DataStreams: | nsaaeriC1.00, nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.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: | nsaaeriC1.00: - null(Raw data stream - documentation not supported)
nsaaerich2C1.a1: - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Time at center of AERI sky observation period(Time)
- Julian Day including day and fraction of day(JulianDay)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- AERI instrument unit serial number(AERIunitNumber)
- base time(base_time)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Wave number(wnum)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Character string containing instrument name(instrumentUnitNumber)
- Observation latitude(Latitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Mean of radiance spectra ensemble(mean_rad)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- lat(lat)
- Time (HHMMSS)(timeHHMMSS)
- Dummy altitude for Zeb(alt)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- lon(lon)
- Observation Altitude(Altitude)
- Time offset of tweaks from base_time(time_offset)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Observation date(dateYYMMDD)
- Version number of Operational Software(systemReleaseNumber)
- Duration of scene view(sceneViewDuration)
- 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) - BB Support Structure Temperature(BBsupportStructureTemp)
- AERI instrument data channel number(channelNumber)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Observation longitude(Longitude)
nsaaerisummaryC1.a1: - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
- Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Dummy altitude for Zeb(alt)
- 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 HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- Wave number in reciprocal centimeters(wnumsum2)
- Wave number in reciprocal centimeters(wnumsum1)
- Wave number in reciprocal centimeters(wnumsum4)
- Wave number in reciprocal centimeters(wnumsum3)
- Wave number in reciprocal centimeters(wnumsum6)
- Wave number in reciprocal centimeters(wnumsum5)
- Wave number in reciprocal centimeters(wnumsum8)
- Wave number in reciprocal centimeters(wnumsum7)
- Wave number in reciprocal centimeters(wnumsum9)
- Observation Altitude(Altitude)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Julian Day including day and fraction of day(JulianDay)
- 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)
- Version number of Operational Software(systemReleaseNumber)
- 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) - AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
- xxx(dataAvailable)
- Time at center of AERI sky observation period(Time)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - base time(base_time)
- Time (HHMMSS)(timeHHMMSS)
- Duration of scene view(sceneViewDuration)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Observation date(dateYYMMDD)
- Time offset of tweaks from base_time(time_offset)
- Ambient air temperature at hatch opening(outsideAirTemp)
- 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) - Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- AERI instrument data channel number(channelNumber)
- Observation longitude(Longitude)
- 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) - Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
- Observation latitude(Latitude)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Wave number in reciprocal centimeters(wnumsum13)
- Wave number in reciprocal centimeters(wnumsum12)
- Wave number in reciprocal centimeters(wnumsum11)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Wave number in reciprocal centimeters(wnumsum10)
- Wave number in reciprocal centimeters(wnumsum14)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
- AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
- Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- lon(lon)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
- lat(lat)
- AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
- Character string containing instrument name(instrumentUnitNumber)
nsaaerich1C1.a1: - Julian Day including day and fraction of day(JulianDay)
- 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) - Time at center of AERI sky observation period(Time)
- Time (HHMMSS)(timeHHMMSS)
- Version number of Operational Software(systemReleaseNumber)
- Time offset of tweaks from base_time(time_offset)
- Duration of scene view(sceneViewDuration)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Observation longitude(Longitude)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Mean of radiance spectra ensemble(mean_rad)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Observation Altitude(Altitude)
- Observation date(dateYYMMDD)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- base time(base_time)
- Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Dummy altitude for Zeb(alt)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - AERI instrument unit serial number(AERIunitNumber)
- lat(lat)
- lon(lon)
- Observation latitude(Latitude)
- AERI instrument data channel number(channelNumber)
- Character string containing instrument name(instrumentUnitNumber)
- Wave number(wnum)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
nsaaeriengineerC1.a1: - Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
- Time (HHMMSS)(timeHHMMSS)
- Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
- Ambient air temperature near blackbodies(airNearBBsTemp)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - base time(base_time)
- Stirling cycle cooler current(coolerCurrent)
- Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
- Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
- 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) - Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- Stirling cycle cooler expander temperature(coolerExpanderTemp)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Radiance standard deviation during ambient blackbody view averaged over
(2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515) - Number of terms used in finite field of view correction(numberOfTerms)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- AERI instrument data channel number(channelNumber)
- Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable) - Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
- The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
centered on the sky view(HBBtempDrift) - Observation date(dateYYMMDD)
- Ambient blackbody temperature - rim top(ABBtopTemp)
- Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Interferometer front end fan airflow heated temperature: used with unheated
temperature as measure of airflow.(frontEndFanAirHeatedTemp) - Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
- Interferometer window temperature measured on the outside of the aluminum window
flange(interferometerWindowTemp) - Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- Interferometer front end fan airflow unheated temperature: used with heated
temperature as measure of airflow.(frontEndFanAirUnheatedTemp) - 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) - Character string containing instrument name(instrumentUnitNumber)
- Radiance standard deviation during ambient blackbody view averaged over (700_705
cm-1)(ABBviewStdDevRadiance700_705) - Detector temperature sensed via diode near detector(detectorTemp)
- Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
- Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- BB Support Structure Temperature(BBsupportStructureTemp)
- Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
- xxx(dataAvailable)
- Observation latitude(Latitude)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- Size of buffer holding initial spectrum(originalInterferogramSize)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
- Hot blackbody temperature - rim top(HBBtopTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
- Radiance standard deviation during hot blackbody view averaged over (675_680
cm-1)(HBBviewStdDevRadiance675_680) - Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- Radiance standard deviation during ambient blackbody view averaged over
(2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300) - Hot blackbody temperature - apex(HBBapexTemp)
- Logical flag indicating that a data record is missing (true/false(missingDataFlag)
- Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
- Time at center of AERI sky observation period(Time)
- Instrument scene mirror position identifier(sceneMirrorPosition)
- Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
- Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
- Observation longitude(Longitude)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and SWskyNENlimit.(SWskyNENacceptable) - Ambient blackbody temperature(ABBbottomTemp)
- 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) - Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Radiance standard deviation during hot blackbody view averaged over (700_705
cm-1)(HBBviewStdDevRadiance700_705) - AERI interferometer temperature at second port(interferometerSecondPortTemp)
- Ambient blackbody temperature - apex(ABBapexTemp)
- Scene mirror motor case temperature(mirrorMotorTemp)
- Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
- Radiance standard deviation during ambient blackbody view averaged over (985_990
cm-1)(ABBviewStdDevRadiance985_990) - Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Hot blackbody temperature - rim bottom(HBBbottomTemp)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
- Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Dummy altitude for Zeb(alt)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Radiance standard deviation during hot blackbody view averaged over (2282_2287
cm-1)(HBBviewStdDevRadiance2282_2287) - Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
- Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
- Radiance standard deviation during ambient blackbody view averaged over
(2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287) - Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
- Time offset of tweaks from base_time(time_offset)
- AERI instrument unit serial number(AERIunitNumber)
- Radiance standard deviation during hot blackbody view averaged over (2295_2300
cm-1)(HBBviewStdDevRadiance2295_2300) - AERI ingest computer temperature measured at back panel of computer(computerTemp)
- Spare temperature sensor (location TBD)(spareTemp)
- Scene mirror motor driver heat sink temperature(motorDriverTemp)
- Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
- Radiance standard deviation during hot blackbody view averaged over (2510_2515
cm-1)(HBBviewStdDevRadiance2510_2515) - Version number of Operational Software(systemReleaseNumber)
- Ambient air temperature near the interferometer(airNearInterferometerTemp)
- Signal conditioning electronics inside air temperature(SCEtemp)
- Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
- Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Duration of scene view(sceneViewDuration)
- Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
- Number of views in a sequence(sceneMirPosCount)
- Field of view half angle used in finite FOV correction(FFOVhalfAngle)
- Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- lon(lon)
- Weight factor for bottom used in calculating ambient blackbody temperature
average(ABBbottomTempWeight) - Observation Altitude(Altitude)
- Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
- Radiance standard deviation during hot blackbody view averaged over (985_990
cm-1)(HBBviewStdDevRadiance985_990) - Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - Blackbody cavity geometry factor(BBcavityFactor)
- Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Radiance standard deviation during ambient blackbody view averaged over (675_680
cm-1)(ABBviewStdDevRadiance675_680) - Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
- Julian Day including day and fraction of day(JulianDay)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Corrective offset for final hot blackbody average temperature(HBBtempOffset)
- Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
- Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
- Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
- lat(lat)
- Scene mirror position encoder value(sceneMirPosEncoder)
- Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
- Ambient air temperature at hatch opening(outsideAirTemp)
|
Subject: | NSA/AERI/C1 - Failure of AERI cryogenic cooler |
DataStreams: | nsaaerich1C1.a1, nsaaerich2C1.a1, nsaaeriengineerC1.a1, nsaaerisummaryC1.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: | nsaaerich2C1.a1: - Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Mean of radiance spectra ensemble(mean_rad)
nsaaerisummaryC1.a1: - Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
- AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
- Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
- Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
- Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
- AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
- Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
- AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
- AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
- Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
nsaaerich1C1.a1: - Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
- Mean of radiance spectra ensemble(mean_rad)
nsaaeriengineerC1.a1: - Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
- Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
- Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
- Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
- Radiance standard deviation during ambient blackbody view averaged over (985_990
cm-1)(ABBviewStdDevRadiance985_990) - Shortwave elevated air brightness temperature from radiance average (2282_2287
cm-1)(elevatedLayerAirTemp2282_2287) - Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
- Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
- Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
- Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
- Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
- 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)
- Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- Radiance standard deviation during ambient blackbody view averaged over
(2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515) - Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
- Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and LWskyNENlimit.(LWskyNENacceptable) - Shortwave surface air brightness temperature from radiance average (2295_2300
cm-1)(surfaceLayerAirTemp2295_2300) - Longwave elevated air brightness temperature from radiance average (700_705
cm-1)(elevatedLayerAirTemp700_705) - Radiance standard deviation during ambient blackbody view averaged over (675_680
cm-1)(ABBviewStdDevRadiance675_680) - Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
- Radiance standard deviation during ambient blackbody view averaged over
(2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287) - Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
- Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm-1(SWskyNEN) - Radiance standard deviation during ambient blackbody view averaged over (700_705
cm-1)(ABBviewStdDevRadiance700_705) - Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
- Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm-1(LWskyNEN) - Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
- Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
- Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
- Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
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