SGP/PGS/C1 - Reprocessing User Notes

Time Variables - to make the PGS system more consistent with LBNL's other data streams, 
the variable 'yyyymmddhhmmss' was renamed 'yyyydddhhmmss'. Also, at the bottom of each 
file, variables 'yyyy','mon','hour','min' were added for those users who prefer to use these 
variables instead. The new 'time' variable (seconds since midnight of the start of file) 
was added to make files compatible with the new recommendations.

Quality Control Flags - to prevent confusion, the quality control flags 'qc_co2ppm' and 
'qc_sum_co2' were combined. The flag 'qc_sum_co2' was elliminated and 'qc_co2ppm' now 
performs range checking on 'co2ppm' variable as well as checking values of all dependencies' 
qc flags.

• 90% confidence limit of co2ppm(co2ppm_se)
• Pressure of channel 2(pres2)
• reading of CO2 in mV(co2mv)
• reference CO2 reading in mV(ref)
• calibration coefficient 1 (quadratic fit)(coeff1)
• calibration coefficient 3 (quadratic fit)(coeff3)
• longitude of instrument tower(site_longitude)
• pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
• Temperature in refigerator(t_refrig)
• flow rate measured by the mass flow controller(flow_rate)
• calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
• p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
• MFRSR channels(channel)
• Number of measurements for indicated channel(nmeas)
• calculated concentration of CO2(co2ppm)
• latitude of instrument tower(site_latitude)
• calibration coefficient 2 (quadratic fit)(coeff2)
• Second level of QC, see reject_flag_explanation global attribute(reject_flag)
• Pressure of channel 1(pres1)
• Date and time in alternate form(yyyymmddhhmmss)
• height of base of instrument tower(site_elevation)
• Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
• flag indicating which channel isotope sample was taken from(iso)
• base time(base_time)
• Pressure of channel 3(pres3)
• calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
• 90% confidence limint of co2mv_slope(co2mv_slope_se)
• temperature of the IRGA(t_irga)
• adjusted CO2(adj)
• r-squared of quadratic fit(r2)
• Pressure of channel 4(pres4)
• calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
• First level of QC, see warn_flag_explanation global attribute(warn_flag)
• standard deviation of co2mv(co2mv_se)

SGP/PGS/C1 - Reprocessing User Notes

Precise Gas System (pgs) daily b1 files should have a dimension of 480, corresponding to a 
measurement every 3 minutes. Previously submitted files had a dimension of 481, the last 
time step of each individual file being mistakenly repeated.

• 90% confidence limit of co2ppm(co2ppm_se)
• Pressure of channel 2(pres2)
• reading of CO2 in mV(co2mv)
• reference CO2 reading in mV(ref)
• calibration coefficient 1 (quadratic fit)(coeff1)
• calibration coefficient 3 (quadratic fit)(coeff3)
• longitude of instrument tower(site_longitude)
• pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
• Temperature in refigerator(t_refrig)
• flow rate measured by the mass flow controller(flow_rate)
• calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
• p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
• MFRSR channels(channel)
• Number of measurements for indicated channel(nmeas)
• calculated concentration of CO2(co2ppm)
• latitude of instrument tower(site_latitude)
• calibration coefficient 2 (quadratic fit)(coeff2)
• Second level of QC, see reject_flag_explanation global attribute(reject_flag)
• Pressure of channel 1(pres1)
• Date and time in alternate form(yyyymmddhhmmss)
• height of base of instrument tower(site_elevation)
• Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
• flag indicating which channel isotope sample was taken from(iso)
• base time(base_time)
• Pressure of channel 3(pres3)
• calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
• 90% confidence limint of co2mv_slope(co2mv_slope_se)
• temperature of the IRGA(t_irga)
• adjusted CO2(adj)
• r-squared of quadratic fit(r2)
• Pressure of channel 4(pres4)
• calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
• First level of QC, see warn_flag_explanation global attribute(warn_flag)
• standard deviation of co2mv(co2mv_se)

SGP/PGS/C1 - Incorrect 60m Data

Precise Gas system (PGS) data at 60m (channel 4) are incorrect. This problem is due to a 
freezing rain and ice storm that hit SGP Central facility on January 5, 2005. The 60m 
tower inlet was clogged with ice and consequently, no air was supplied to the PGS instrument.

• 90% confidence limit of co2ppm(co2ppm_se)
• p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
• Pressure of channel 4(pres4)
• reading of CO2 in mV(co2mv)
• Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
• calculated concentration of CO2(co2ppm)
• 90% confidence limint of co2mv_slope(co2mv_slope_se)
• pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
• flow rate measured by the mass flow controller(flow_rate)
• standard deviation of co2mv(co2mv_se)

SGP/AERI/E14 - Sampling rate changes

The sampling rate of the SGP.E14 AERI was changed 4 times during July and August 2005. 
Data quality is not affected but faster sampling rate means that less scans are coadded and 
the signal-to-noise ratio of the spectral data will be different.

The E14 scan rate was increased to rapid sampling mode to support efforts at the SGP. 
However, a hard drive failure occurred during rapid sampling. A second hard drive was 
installed. We tested the new drive to make sure there was no problem by running the system at 
regular sampling speed. There were no problems so the AERI sampling rate was increased to 
rapid sampling mode. However, during observation, it was noted that the computer and hard 
drive could not keep up with the rapid sampling rate and the spectral data badly lagged 
the summary files, usually by 8 spectra. This lag time could have caused hard drive 
corruption because files were still being written when the system was trying to restart at 
00:00 GMT. The solution to the problem was to increase the sampling rate. The sampling rates 
are listed below.

February 10 2005-July 5 2005 Blackbodies 46 coadds each, Sky view 90 coadds
July 6 2005 - July 22 2005 Blackbodies and Sky view 6 coadds each
July 23 2005 - July 28 2005 hard drive failure, no data
July 29 2005 - August 5 2005 Blackbodies 46 coadds each, Sky view 90 coadds
August 6 2005 - present Blackbodies and Sky view 12 coadds each

Dr. David Turner is preparing a VAP to reduce instrument noise when rapid sampling to the 
noise level of normal sampling. This VAP should correct the problem.

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

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

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

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

SGP/PGS/C1 - Suspicious 4m data

KNF pump for 4m height (channel 2) started to leak on November 24, 2004 and sampled air 
was consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.

• 90% confidence limit of co2ppm(co2ppm_se)
• calculated concentration of CO2(co2ppm)

SGP/PGS/C1 - Suspicious 2m data

KNF pump for 2m height (channel 1) started to leak on July 22, 2004 and sampled air was 
consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.

• 90% confidence limit of co2ppm(co2ppm_se)
• calculated concentration of CO2(co2ppm)

SGP/PGS/C1 - Suspicious 25m and 60m data

KNF pumps for 25m and 60m height (channel 3 and channel 4) started to leak on March 31, 
2005 and sampled air was consequently "contaminated" by indoor air. The pumps were replaced 
on August 19, 2005.

• 90% confidence limit of co2ppm(co2ppm_se)
• calculated concentration of CO2(co2ppm)

SGP/PGS/C1 - Updated files

Dew point temperature (dpt) sensor (Vaisala DMT 142) was added to the system on May 24, 
2005 to assess water trapping system efficiency. Consequently, variable "dpt" is filled 
with missing values (-999.99) prior measurements start date (May 24, 2005).

• 90% confidence limit of co2ppm(co2ppm_se)
• Pressure of channel 2(pres2)
• reading of CO2 in mV(co2mv)
• reference CO2 reading in mV(ref)
• calibration coefficient 1 (quadratic fit)(coeff1)
• calibration coefficient 3 (quadratic fit)(coeff3)
• longitude of instrument tower(site_longitude)
• pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
• Temperature in refigerator(t_refrig)
• flow rate measured by the mass flow controller(flow_rate)
• calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
• p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
• MFRSR channels(channel)
• Number of measurements for indicated channel(nmeas)
• calculated concentration of CO2(co2ppm)
• latitude of instrument tower(site_latitude)
• calibration coefficient 2 (quadratic fit)(coeff2)
• Second level of QC, see reject_flag_explanation global attribute(reject_flag)
• Pressure of channel 1(pres1)
• Date and time in alternate form(yyyymmddhhmmss)
• height of base of instrument tower(site_elevation)
• Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
• flag indicating which channel isotope sample was taken from(iso)
• base time(base_time)
• Pressure of channel 3(pres3)
• calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
• 90% confidence limint of co2mv_slope(co2mv_slope_se)
• temperature of the IRGA(t_irga)
• adjusted CO2(adj)
• r-squared of quadratic fit(r2)
• Pressure of channel 4(pres4)
• calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
• First level of QC, see warn_flag_explanation global attribute(warn_flag)
• standard deviation of co2mv(co2mv_se)

SGP/AERI/E14 - QC Data corrupted by static

The E14 AERI had elevated channel 2 short band responsivity and noise equivalent radiance 
values. These values are normally used to evaluate data quality. The cause of these high 
values is thought to be due to a static charge. The actual radiance plots are not 
affected.

• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)

SGP/AERI/E14 - Missing data

Data are missing and unrecoverable.

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

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

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

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

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

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