NSA/AERI/C1 - Snow in enclosure

A heavy, wet snowstorm late on April 17th and early on the 18th resulted in wet snow 
packing around the arms of the AERI's hatch controller.  This resulted in the ventilator fan 
not shutting down when the hatch closed, and thus snow was packed into the front of the 
AERI (i.e., around the scene mirror and blackbodies).  The data for this period should not 
be used.

Do not use data from this period for scientific analysis.

• Observation latitude(Latitude)
• lon(lon)
• time_in_seconds_since_volume_start(time)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
  Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Duration of scene view(sceneViewDuration)
• BB Support Structure Temperature(BBsupportStructureTemp)
• wavenumbers for mean radiance spectra(wnum)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_mean_rad)
• Julian Day including day and fraction of day(JulianDay)
• Observation altitude(Altitude)
• Time in decimal format at center of AERI sky observation period(Time_UTC_hours)
• Relative humidity measured near Blackbodies. Use with air temperature near BBs
  only.(atmosphericRelativeHumidity)
• base time in epoch(base_time)
• Character string containing instrument name(instrumentUnitNumber)
• Wave number in reciprocal centimeters(wnum2)
• Calibrated scene type identification(calibratedSceneID)
• AERI instrument unit serial number(AERIunitNumber)
• North Latitude(lat)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Time offset from base_time(time_offset)
• Version number of Operational Software(systemReleaseNumber)
• Observation longitude(Longitude)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• -180.0 - +180.0(alt)
• Mean of radiance spectra ensemble(mean_rad)
• Ambient air temperature at hatch opening(outsideAirTemp)
• AERI instrument data channel number(channelNumber)
• Time at center of AERI sky observation period(timeHHMMSS)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Scene mirror view angle in non-negative degrees, measured clockwise from nadir
  looking into interferometer window(sceneMirrorAngle)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Observation date(dateYYMMDD)

• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• AERI LW scene NESR spectral averages (ch1)(SkyNENCh1)
• AERI instrument data channel number(channelNumber)
• time_in_seconds_since_volume_start(time)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Duration of scene view(sceneViewDuration)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the scene view(HBBtempDrift)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Averaged Wave number in inverse centimeters(wnumsum8)
• Julian Day including day and fraction of day(JulianDay)
• Averaged Wave number in inverse centimeters(wnumsum9)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Averaged wave number for SW scene NESR spectral averages (ch2)(wnumsum6)
• Averaged wave number for LW HBB 2min NESR estimate number 1 (ch1)(wnumsum7)
• Averaged Wave number in inverse centimeters(wnumsum4)
• Wave number in reciprocal centimeters(wnumsum5)
• Averaged wave number for SW responsivity spectral averages(wnumsum2)
• Averaged Wave number in inverse centimeters(wnumsum3)
• Averaged wave number for LW responsivity spectral averages(wnumsum1)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• AERI LW responsivity spectral averages (ch1)(ResponsivitySpectralAveragesCh1)
• Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
  Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Time offset from base_time(time_offset)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Maximum temperature difference between HBB thermistors(HBBmaxTempDiff)
• Scene mirror view angle in non-negative degrees, measured clockwise from nadir
  looking into interferometer window(sceneMirrorAngle)
• Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Time in decimal format at center of AERI sky observation period(Time_UTC_hours)
• AERI SW HBB 2min NESR estimate #2 derived from sequential HBB views (ch2)(HBB2minNENestimateNo2Ch2)
• AERI LW HBB 2min NESR estimate #2 derived from sequential HBB views (ch1)(HBB2minNENestimateNo2Ch1)
• Observation longitude(Longitude)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
• base time in epoch(base_time)
• AERI SW scene radiance spectral averages (ch2)(SkyRadianceSpectralAveragesCh2)
• North Latitude(lat)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• Observation date(dateYYMMDD)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
• Calibrated scene type identification(calibratedSceneID)
• Character string containing instrument name(instrumentUnitNumber)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• -180.0 - +180.0(alt)
• Front end fan air temperature difference(frontEndFanAirTempDiff)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(SWskyNEN)
• AERI instrument unit serial number(AERIunitNumber)
• Averaged wave number for SW scene radiance spectral averages (ch2)(wnumsum12)
• Observation altitude(Altitude)
• Wave number in reciprocal centimeters(wnumsum11)
• Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
• Averaged wave number for SW scene brightness temp spectral averages (ch2)(wnumsum14)
• Averaged Wave number in inverse centimeters(wnumsum13)
• Longwave radiance average (700_705 cm^-1) elevated air(elevatedLayerRadiance700_705)
• Rain sensor analog output(rainSensorIntensity)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Relative humidity measured near Blackbodies. Use with air temperature near BBs
  only.(atmosphericRelativeHumidity)
• Maximum temperature difference between ABB thermistors(ABBmaxTempDiff)
• Sun sensor intensity(sunSensorIntensity)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• 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 LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Logical flag indicating whether any data is available at current time
  (true/false)(dataAvailable)
• Time at center of AERI sky observation period(timeHHMMSS)
• Observation latitude(Latitude)
• Version number of Operational Software(systemReleaseNumber)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Longwave HBB noise-equivalent radiance(LW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
• lon(lon)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Shortwave radiance average (2282_2287 cm^-1) elevated air(elevatedLayerRadiance2282_2287)
• Shortwave HBB Noise-equivalent Radiance(SW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Averaged wave number for SW HBB 2min NESR estimate number 2 (ch2)(wnumsum10)
• AERI LW scene brightness temp spectral averages (ch1)(SkyBrightnessTempSpectralAveragesCh1)
• AERI SW scene brightness temp spectral averages (ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)

• Duration of scene view(sceneViewDuration)
• Mean of radiance spectra ensemble(mean_rad)
• Time in decimal format at center of AERI sky observation period(Time_UTC_hours)
• Wave number in reciprocal centimeters(wnum2)
• lon(lon)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• AERI instrument data channel number(channelNumber)
• Observation date(dateYYMMDD)
• AERI instrument unit serial number(AERIunitNumber)
• Calibrated scene type identification(calibratedSceneID)
• Scene mirror view angle in non-negative degrees, measured clockwise from nadir
  looking into interferometer window(sceneMirrorAngle)
• Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
  Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Version number of Operational Software(systemReleaseNumber)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Difference between the sky view\'s radiance variance and the hot black body
  view\'s variance(standard_dev_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)
• Time offset from base_time(time_offset)
• Character string containing instrument name(instrumentUnitNumber)
• Relative humidity measured near Blackbodies. Use with air temperature near BBs
  only.(atmosphericRelativeHumidity)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Ambient air temperature at hatch opening(outsideAirTemp)
• base time in epoch(base_time)
• Observation altitude(Altitude)
• Julian Day including day and fraction of day(JulianDay)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Observation longitude(Longitude)
• -180.0 - +180.0(alt)
• wavenumbers for mean radiance spectra(wnum)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Observation latitude(Latitude)
• North Latitude(lat)
• time_in_seconds_since_volume_start(time)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Time at center of AERI sky observation period(timeHHMMSS)

• (Raw data stream - documentation not supported)