| Description: | A heavy, wet snowstorm late on April 17th and early on the 18th resulted in wet snow
packing around the arms of the AERI's hatch controller. This resulted in the ventilator fan
not shutting down when the hatch closed, and thus snow was packed into the front of the
AERI (i.e., around the scene mirror and blackbodies). The data for this period should not
be used. |
| Measurements: | nsaaeriC1.00: - Raw data stream - documentation not supported(Raw data stream - documentation not supported)
nsaaerich2C1.b1: - altitude above sea levelaltunits(alt)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
- Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
- north latitude for all the input platforms.(lat)
- Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
only.(atmosphericRelativeHumidity) - Time at center of AERI sky observation period(Time_UTC_hours)
- Observation Altitude(Altitude)
- Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
- Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
-1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen) - Julian Day including day and fraction of day(JulianDay)
- Duration of scene view(sceneViewDuration)
- wavenumbers for mean radiance spectra(wnum)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- AERI instrument unit serial number(AERIunitNumber)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Observation latitude(Latitude)
- Version number of Operational Software(systemReleaseNumber)
- 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 longitude(Longitude)
- Character string containing instrument name(instrumentUnitNumber)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- Time offset of tweaks from base_time(time_offset)
- Time offset from midnight of date of file. For CO data, this is identical to
time_offset and is included for compatibility.(time) - Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Difference between the sky view\'s radiance variance and the hot black body
view\'s variance(standard_dev_mean_rad) - Time offset from base_time(base_time)
- Observation date(dateYYMMDD)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- east longitude for all the input platforms.(lon)
- Time at center of AERI sky observation period(timeHHMMSS)
- AERI instrument data channel number(channelNumber)
nsaaerisummaryC1.b1: - altitude above sea levelaltunits(alt)
- Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
- Averaged Wave number in inverse centimeters(wnumsum9)
- AERI instrument unit serial number(AERIunitNumber)
- Ambient air temperature at hatch opening(outsideAirTemp)
- Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- 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 any data is available at current time
(true/false)(dataAvailable) - Averaged Wave number in inverse centimeters(wnumsum6)
- The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
centered on the sky view(HBBtempDrift) - AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
- Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
only.(atmosphericRelativeHumidity) - Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
- AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
- Radiance standard deviation during sky view averaged over (2282_2287 cm^-1)(skyViewStdDevRadiance2282_2287)
- Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
- AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
- Observation date(dateYYMMDD)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - Averaged Wave number in inverse centimeters(wnumsum2)
- Time at center of AERI sky observation period(timeHHMMSS)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
- Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
- Shortwave surface air brightness temperature from radiance average (2295_2300
cm^-1)(surfaceLayerAirTemp2295_2300) - Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
- Shortwave elevated air brightness temperature from radiance average (2282_2287
cm^-1)(elevatedLayerAirTemp2282_2287) - Shortwave radiance average (2282_2287 cm^-1) Elevated Air(elevatedLayerRadiance2282_2287)
- Observation latitude(Latitude)
- The noise equivalent radiance observed in the longwave channel during a sky view
at 1000 cm^-1(LWskyNEN) - Julian Day including day and fraction of day(JulianDay)
- 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)
- Hatch status indicator, boolean with negative error conditions: 1:Open 0:Closed
-1:Fault -2:Outside Valid Range -3:Neither Open Nor Closed(hatchOpen) - Version number of Operational Software(systemReleaseNumber)
- Averaged Wave number in inverse centimeters(wnumsum3)
- Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
- Radiance standard deviation during sky view averaged over (700_705 cm^-1)(skyViewStdDevRadiance700_705)
- Logical flag indicating whether shortwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using SWskyNEN and
SWskyNENlimit.(SWskyNENacceptable) - Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
- Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
- AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
- AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
- Longwave elevated air brightness temperature from radiance average (700_705
cm^-1)(elevatedLayerAirTemp700_705) - Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
- AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
- Averaged Wave number in inverse centimeters(wnumsum4)
- Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
- Logical flag indicating whether longwave channel noise equivalent radiance is
acceptable in sky view (true/false). Determined using LWskyNEN and
LWskyNENlimit.(LWskyNENacceptable) - Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
indicative of front end air flow.(frontEndFanAirTempDiff) - Duration of scene view(sceneViewDuration)
- Characteristic value representing overall longwave channel responsivity(LWresponsivity)
- Hot blackbody temperature used in calibration(calibrationHBBtemp)
- Averaged Wave number in inverse centimeters(wnumsum12)
- 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 offset of tweaks from base_time(time_offset)
- Averaged Wave number in inverse centimeters(wnumsum8)
- AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
- Averaged Wave number in inverse centimeters(wnumsum13)
- Longwave radiance average (700_705 cm^-1) Elevated Air(elevatedLayerRadiance700_705)
- Averaged Wave number in inverse centimeters(wnumsum14)
- Time offset from midnight of date of file. For CO data, this is identical to
time_offset and is included for compatibility.(time) - Ambient temperature used in calibration(calibrationAmbientTemp)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- Averaged Wave number in inverse centimeters(wnumsum1)
- AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
- Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
- Averaged Wave number in inverse centimeters(wnumsum11)
- Shortwave window brightness temperature from radiance average (2510_2515 cm^-1)(shortwaveWindowAirTemp2510_2515)
- Time offset from base_time(base_time)
- north latitude for all the input platforms.(lat)
- Longwave radiance average (675-680 cm^-1) Surface Air(surfaceLayerRadiance675_680)
- Averaged Wave number in inverse centimeters(wnumsum10)
- Time at center of AERI sky observation period(Time_UTC_hours)
- Longwave surface air brightness temperature from radiance average (675_680
cm^-1)(surfaceLayerAirTemp675_680) - Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
- The noise equivalent radiance observed in the shortwave channel during a sky
view at 2500 cm^-1(SWskyNEN) - Averaged Wave number in inverse centimeters(wnumsum7)
- Difference between actual and ideal motor encoder values for current view
indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift) - Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
- east longitude for all the input platforms.(lon)
- Averaged Wave number in inverse centimeters(wnumsum5)
- Character string containing instrument name(instrumentUnitNumber)
- Observation Altitude(Altitude)
- AERI instrument data channel number(channelNumber)
- AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
- AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
- Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
- AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
- AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
- AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
- Radiance standard deviation during sky view averaged over (675_680 cm^-1)(skyViewStdDevRadiance675_680)
- Logical flag indicating whether HBB temperature is stable (true) or not stable
(false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
nsaaerich1C1.b1: - AERI instrument data channel number(channelNumber)
- Ambient air temperature at hatch opening(outsideAirTemp)
- north latitude for all the input platforms.(lat)
- Time offset of tweaks from base_time(time_offset)
- Observation Altitude(Altitude)
- Version number of Operational Software(systemReleaseNumber)
- Downwelling radiance interpolated to standard wavenumber scale(mean_rad)
- Temperature of the AERI blackbody support structure(BBsupportStructureTemp)
- Relative humidity measured near Blackbodies. Use with Air Temperature Near BBs
only.(atmosphericRelativeHumidity) - Observation atmospheric pressure in AERI electronics(atmosphericPressure)
- AERI instrument unit serial number(AERIunitNumber)
- wavenumbers for mean radiance spectra(wnum)
- Time at center of AERI sky observation period(Time_UTC_hours)
- wavenumbers for standard deviation of radiance spectra(wnum2)
- 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)
- altitude above sea levelaltunits(alt)
- Time offset from midnight of date of file. For CO data, this is identical to
time_offset and is included for compatibility.(time) - Observation longitude(Longitude)
- Ambient temperature used in calibration(calibrationAmbientTemp)
- Scene mirror view angle in non-negative degrees, measured clockwise looking into
interferometer window.(sceneMirrorAngle) - 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) - Observation date(dateYYMMDD)
- Duration of scene view(sceneViewDuration)
- Time offset from base_time(base_time)
- 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 latitude(Latitude)
- Time at center of AERI sky observation period(timeHHMMSS)
- Character string containing instrument name(instrumentUnitNumber)
- Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
- Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
- east longitude for all the input platforms.(lon)
- Cold blackbody temperature used in calibration(calibrationCBBtemp)
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