SGP/AERI/B1 - Hillsboro AERI data missing

June 8,2000 hard drive failure resulted in no data being collected or logged until hard 
drive was replaced on July 18,2000. However, a control file in the replacement drive did 
not forward the data. This control file was corrected and data flow was begun in August.

• Array of heights for the range gates(height)
• Initial surface dewpoint temperature used in retrieval(init_dewpointTemperature)
• Flag indicating aeri retrieval status(status_flag)
• Flag indicating where the initial surface water measurements are from: 0-> SMOS,
  1-> AERI(water_flag)
• Initial surface absolute temperature used in retrieval(init_temperature)
• Cloud base height(cloudBaseHeight)
• Interpolated dewpoint temperature(dewpointTemperature)
• Dummy altitude for Zeb(alt)
• Total precipitable water vapor, from Microwave Radiometer(totalPrecipitalWater)
• lat(lat)
• base time(base_time)
• Initial surface pressure used in retrieval(init_pressure)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• Flag indicating which instruments were available and provided input for the
  retrieval(input_flag)
• air temperature (NGM250 predicted)(temperature)
• Initial water vapor mixing ratio used in retrieval(init_waterVaporMixingRatio)

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

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

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

• null(Raw data stream - documentation not supported)

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

SGP/AERI/B1 - Increased radiative uncertainty during hot summer afternoons

The ambient temperature of the AERI enclosures at the boundary facilities
often exceeded 308 K during hot summer afternoons.  This threshold marked
the maximum end of the "acceptable" range of temperatures that the 
ambient blackbody should maintain.  The issue is that if the hot 
blackbody and ambient blackbody temperatures are too close together, then 
the radiative calibration becomes more uncertain.  It should be noted 
that the hot blackbody's temperature is maintained at roughly 333 K.  

Using the calibration equation, an uncertainty analysis was performed
to see how much "additional" uncertainty resulted in the AERI
observations when the ambient temperature was between 308-315 K (315 K
was the maximum temperature that the ambient blackbody reached during
the summer).  The analysis compared the radiative uncertainties from the
Hillsboro (B1) AERI (chosen at random) with the AERI-01 at the SGP/CF
over a 5-year period.  Plot1 (below) shows the time-series of ambient
blackbody temperatures for the two instruments, along with histograms to
show the distribution of the temperatures.  The boundary facility
instrument did suffer from higher temperatures in the summer
time periods.  Plot2 (bleow) shows the relative radiative uncertainty
for each instrument.  The CF instrument has a maximum radiative
uncertainty of around 0.18% during the summer, while the BF instrument's
maximum radiative uncertainty is about 0.25%.  This plot demonstrates
that the radiative uncertainty is significantly larger for the BF
instrument in the summer relative to the CF instrument.  However, the
absolute radiative accuracy for the AERI is specified to be better than
1% of the ambient radiance, and both the CF and the BF AERIs are well
within this uncertainty.  

In short, there is significantly higher radiative uncertainty in the
BF AERIs during the hot summer afternoons, but the uncertainty is well
within the specified accuracy of the instrument.

plot1:  aeri_abb_temp.lamont_hillsboro.png 

plot2:  aeri_relative_error.lamont_hillsboro.png 

• Mean of radiance spectra ensemble(mean_rad)

• Mean of radiance spectra ensemble(mean_rad)

SGP/AERI/B1 - Increased radiative uncertainty during hot summer afternoons

The ambient temperature of the AERI enclosures at the boundary facilities
often exceeded 308 K during hot summer afternoons.  This threshold marked
the maximum end of the "acceptable" range of temperatures that the 
ambient blackbody should maintain.  The issue is that if the hot 
blackbody and ambient blackbody temperatures are too close together, then 
the radiative calibration becomes more uncertain.  It should be noted 
that the hot blackbody's temperature is maintained at roughly 333 K.  

Using the calibration equation, an uncertainty analysis was performed
to see how much "additional" uncertainty resulted in the AERI
observations when the ambient temperature was between 308-315 K (315 K
was the maximum temperature that the ambient blackbody reached during
the summer).  The analysis compared the radiative uncertainties from the
Hillsboro (B1) AERI (chosen at random) with the AERI-01 at the SGP/CF
over a 5-year period.  Plot1 (below) shows the time-series of ambient
blackbody temperatures for the two instruments, along with histograms to
show the distribution of the temperatures.  The boundary facility
instrument did suffer from higher temperatures in the summer
time periods.  Plot2 (bleow) shows the relative radiative uncertainty
for each instrument.  The CF instrument has a maximum radiative
uncertainty of around 0.18% during the summer, while the BF instrument's
maximum radiative uncertainty is about 0.25%.  This plot demonstrates
that the radiative uncertainty is significantly larger for the BF
instrument in the summer relative to the CF instrument.  However, the
absolute radiative accuracy for the AERI is specified to be better than
1% of the ambient radiance, and both the CF and the BF AERIs are well
within this uncertainty.  

In short, there is significantly higher radiative uncertainty in the
BF AERIs during the hot summer afternoons, but the uncertainty is well
within the specified accuracy of the instrument.

plot1:  aeri_abb_temp.lamont_hillsboro.png 

plot2:  aeri_relative_error.lamont_hillsboro.png 

• Mean of radiance spectra ensemble(mean_rad)

• Mean of radiance spectra ensemble(mean_rad)