NSA/SKYRAD/C1 - Shaded PIR data unreasonable

There was  a 10-25 W/m2 spike in data probably due to operator working around instrument 
or cleaning it.

• PIR shaded maximum(pirs_max)
• PIR shaded standard deviation(pirs_sd)
• PIR shaded minimum(pirs_min)
• PIR shaded mean(pirs_mean)

NSA/SKYRAD/C1 - Spikes in Unshaded PIR data

There was  a 10-25 W/m2 spike in data probably due to operator working around instrument 
or cleaning it.

• PIR1 unshaded standard deviation(pir1_sd)
• PIR1 unshaded minimum(pir1_min)
• PIR1 unshaded maximum(pir1_max)
• PIR1 unshaded mean(pir1_mean)

NSA/SKYRAD/C1 - IRT measurements during precipitation events

The IRT measurement of sky/cloud temperature was in question during precipitation events 
because rain or snow could accumulate in the upward-pointed lens barrel. This was 
corrected by reorienting the IRT to measure the sky temperature as reflected by a gold mirror.

• Sky Infra-Red Temperature(sky_ir_temp)
• Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)
• Sky Infra Red Temperature Maxima(sky_ir_temp_max)
• Sky Infra Red Temperature Minima(sky_ir_temp_min)

NSA/AERI/C1 - Data file header manipulated

The NSA.C1 AERI data for 19990321 and 19990324 were processed on
July 23, 2004 using version 1.24 of the ingest.  This resulted
in the creation of .b1 level data files.  Because the other March
1999 data are .a1 level data files, the .b1 files were modified
using nc_tools (nc_copy, ncvarrename, ncattcopy) to create .a1
level data files.

The data in the files were not changed in anyway.  Only header
modifications were made.  The user may notice small header differences
between these files and others from March 1999.

• Wave number in reciprocal centimeters(wnumsum12)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2ch1)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Duration of scene view(sceneViewDuration)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Wave number in reciprocal centimeters(wnumsum11)
• AERI instrument unit serial number(AERIunitNumber)
• Version number of Operational Software(systemReleaseNumber)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
• Time at center of AERI sky observation period(Time)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENch2)
• Time offset of tweaks from base_time(time_offset)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Observation longitude(Longitude)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENch1)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Wave number in reciprocal centimeters(wnumsum6)
• Character string containing instrument name(instrumentUnitNumber)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Time (HHMMSS)(timeHHMMSS)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Observation Altitude(Altitude)
• Julian Day including day and fraction of day(JulianDay)
• Wave number in reciprocal centimeters(wnumsum9)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityCh2)
• lat(lat)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2ch2)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Wave number in reciprocal centimeters(wnumsum7)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• lon(lon)
• Observation latitude(Latitude)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectraAveragesCh1)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• Wave number in reciprocal centimeters(wnumsum4)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• Wave number in reciprocal centimeters(wnumsum10)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
• Wave number in reciprocal centimeters(wnumsum8)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• xxx(dataAvailable)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• base time(base_time)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Wave number in reciprocal centimeters(wnumsum3)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENEstimateNo2Ch1)
• Wave number in reciprocal centimeters(wnumsum5)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectraAveragesCh2)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityCh1)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• Wave number in reciprocal centimeters(wnumsum14)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1ch2)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
• Wave number in reciprocal centimeters(wnumsum2)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• AERI instrument data channel number(channelNumber)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1ch1)
• Wave number in reciprocal centimeters(wnumsum13)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
• Dummy altitude for Zeb(alt)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Wave number in reciprocal centimeters(wnumsum1)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
• Observation date(dateYYMMDD)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)

• lon(lon)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• AERI instrument unit serial number(AERIunitNumber)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Observation Altitude(Altitude)
• lat(lat)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Observation date(dateYYMMDD)
• BB Support Structure Temperature(BBsupportStructureTemp)
• base time(base_time)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Time (HHMMSS)(timeHHMMSS)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• AERI instrument data channel number(channelNumber)
• Time offset of tweaks from base_time(time_offset)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Version number of Operational Software(systemReleaseNumber)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Time at center of AERI sky observation period(Time)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Character string containing instrument name(instrumentUnitNumber)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Dummy altitude for Zeb(alt)
• Mean of radiance spectra ensemble(mean_rad)
• Duration of scene view(sceneViewDuration)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Julian Day including day and fraction of day(JulianDay)
• Observation latitude(Latitude)
• Wave number(wnum)
• Observation longitude(Longitude)

• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Dummy altitude for Zeb(alt)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Version number of Operational Software(systemReleaseNumber)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• Radiance standard deviation during hot blackbody view averaged over (700_705
  cm-1)(HBBviewStdDevRadiance700_705)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Interferometer window temperature measured on the outside of the aluminum window
  flange(interferometerWindowTemp)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
• Radiance standard deviation during ambient blackbody view averaged over (675_680
  cm-1)(ABBviewStdDevRadiance675_680)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• AERI instrument data channel number(channelNumber)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Time at center of AERI sky observation period(Time)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Scene mirror motor case temperature(mirrorMotorTemp)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Radiance standard deviation during hot blackbody view averaged over (985_990
  cm-1)(HBBviewStdDevRadiance985_990)
• AERI ingest computer temperature measured at back panel of computer(computerTemp)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Radiance standard deviation during ambient blackbody view averaged over
  (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• Radiance standard deviation during hot blackbody view averaged over (2295_2300
  cm-1)(HBBviewStdDevRadiance2295_2300)
• Observation date(dateYYMMDD)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Hot blackbody temperature - rim top(HBBtopTemp)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• lat(lat)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Radiance standard deviation during hot blackbody view averaged over (675_680
  cm-1)(HBBviewStdDevRadiance675_680)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• Number of views in a sequence(sceneMirPosCount)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Stirling cycle cooler current(coolerCurrent)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Time offset of tweaks from base_time(time_offset)
• Time (HHMMSS)(timeHHMMSS)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• lon(lon)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• AERI instrument unit serial number(AERIunitNumber)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Observation longitude(Longitude)
• Signal conditioning electronics inside air temperature(SCEtemp)
• Number of terms used in finite field of view correction(numberOfTerms)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• base time(base_time)
• Ambient blackbody temperature(ABBbottomTemp)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Hot blackbody temperature - apex(HBBapexTemp)
• Observation latitude(Latitude)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Detector temperature sensed via diode near detector(detectorTemp)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Blackbody cavity geometry factor(BBcavityFactor)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Julian Day including day and fraction of day(JulianDay)
• Radiance standard deviation during ambient blackbody view averaged over (700_705
  cm-1)(ABBviewStdDevRadiance700_705)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• Duration of scene view(sceneViewDuration)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Radiance standard deviation during ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Radiance standard deviation during hot blackbody view averaged over (2282_2287
  cm-1)(HBBviewStdDevRadiance2282_2287)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Observation Altitude(Altitude)
• Character string containing instrument name(instrumentUnitNumber)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Spare temperature sensor (location TBD)(spareTemp)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
• xxx(dataAvailable)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Interferometer front end fan airflow unheated temperature: used with heated
  temperature as measure of airflow.(frontEndFanAirUnheatedTemp)

• Ambient air temperature at hatch opening(outsideAirTemp)
• AERI instrument data channel number(channelNumber)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Wave number(wnum)
• lat(lat)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Julian Day including day and fraction of day(JulianDay)
• Observation date(dateYYMMDD)
• Character string containing instrument name(instrumentUnitNumber)
• Time at center of AERI sky observation period(Time)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Dummy altitude for Zeb(alt)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Observation Altitude(Altitude)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Observation longitude(Longitude)
• base time(base_time)
• Duration of scene view(sceneViewDuration)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Mean of radiance spectra ensemble(mean_rad)
• Time (HHMMSS)(timeHHMMSS)
• Observation latitude(Latitude)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• AERI instrument unit serial number(AERIunitNumber)
• Version number of Operational Software(systemReleaseNumber)
• lon(lon)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Time offset of tweaks from base_time(time_offset)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• BB Support Structure Temperature(BBsupportStructureTemp)

NSA/GNDRAD/C1 - IRT insufficiently heated

IRT had insufficient heating to maintain an internal reference temperature above 0 degrees 
C.  Measurements of sky temperature were over-estimated when instrument was below 
freezing.

• IRT1 standard deviation(irt1_sd)
• IRT1 mean(irt1_mean)
• IRT1 maximum(irt1_max)
• IRT1 minimum(irt1_min)

NSA/SKYRAD/C1 - IRT insufficiently heated

IRT had insufficient heating to maintain an internal reference temperature above 0 degrees 
C. Measurements of sky temperature were over-estimated when instrument was below 
freezing.

• IRT1 maximum(irt1_max)
• IRT1 standard deviation(irt1_sd)
• IRT1 minimum(irt1_min)
• IRT1 mean(irt1_mean)