TWP/C2  Installation

The Nauru ARCS was installed during the period September-November
1998.  Data were being collected by the end of October, but for the
first several weeks of November, the site was undergoing considerable
change, so data from that period should be used with caution.  The
official site dedication occured on November 20.  Most on-site
activity ended following the dedication so we will consider November
20 to be the beginning of the Nauru operations.  The last members of
the installation team left Nauru on November 24.

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

• North Latitude(lat)
• Time offset from base_time(time_offset)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
• AERI LW scene NESR spectral averages (ch1)(SkyNENCh1)
• -180.0 - +180.0(alt)
• AERI instrument unit serial number(AERIunitNumber)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• AERI instrument data channel number(channelNumber)
• Character string containing instrument name(instrumentUnitNumber)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(SWskyNEN)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
• Shortwave radiance average (2282_2287 cm^-1) elevated air(elevatedLayerRadiance2282_2287)
• lon(lon)
• Rain sensor analog output(rainSensorIntensity)
• Observation altitude(Altitude)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Time at center of AERI sky observation period(Time)
• Relative humidity measured near Blackbodies. Use with air temperature near BBs
  only.(atmosphericRelativeHumidity)
• Maximum temperature difference between HBB thermistors(HBBmaxTempDiff)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_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)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectraAveragesCh1)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectraAveragesCh2)
• Logical flag indicating whether any data is available at current time
  (true/false)(dataAvailable)
• Time at center of AERI sky observation period(timeHHMMSS)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Scene mirror view angle in non-negative degrees, measured clockwise from nadir
  looking into interferometer window(sceneMirrorAngle)
• Observation latitude(Latitude)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
• AERI LW Scene radiance spectral averages (ch1)(SkyRadianceSpectraAveragesCh1)
• AERI SW scene radiance spectral averages (ch2)(SkyRadianceSpectraAveragesCh2)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Julian Day including day and fraction of day(JulianDay)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENEstimateNo1Ch1)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENEstimateNo1Ch2)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyVariabilityAveragesCh2)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyVariabilityAveragesCh1)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Longwave radiance average (700_705 cm^-1) elevated air(elevatedLayerRadiance700_705)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• base time in epoch(base_time)
• Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
  Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Maximum temperature difference between ABB thermistors(ABBmaxTempDiff)
• Averaged Wave number in inverse centimeters(wnumsum4)
• Averaged Wave number in inverse centimeters(wnumsum3)
• Averaged wave number for SW responsivity spectral averages(wnumsum2)
• Averaged wave number for LW responsivity spectral averages(wnumsum1)
• Averaged Wave number in inverse centimeters(wnumsum8)
• Averaged wave number for LW HBB 2min NESR estimate number 1 (ch1)(wnumsum7)
• Averaged wave number for SW scene NESR spectral averages (ch2)(wnumsum6)
• Wave number in reciprocal centimeters(wnumsum5)
• Averaged Wave number in inverse centimeters(wnumsum9)
• Observation date(dateYYMMDD)
• Wave number in reciprocal centimeters(wnumsum11)
• Averaged wave number for SW HBB 2min NESR estimate number 2 (ch2)(wnumsum10)
• Averaged Wave number in inverse centimeters(wnumsum13)
• Averaged wave number for SW scene radiance spectral averages (ch2)(wnumsum12)
• Averaged wave number for SW scene brightness temp spectral averages (ch2)(wnumsum14)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the scene view(HBBtempDrift)
• Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Duration of scene view(sceneViewDuration)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Observation longitude(Longitude)
• Front end fan air temperature difference(frontEndFanAirTempDiff)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• Version number of Operational Software(systemReleaseNumber)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• AERI LW scene brightness temp spectral averages (ch1)(SkyBrightnessTempSpectralAveragesCh1)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Shortwave HBB Noise-equivalent Radiance(SW_HBB_NEN)
• AERI SW scene brightness temp spectral averages (ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Calibrated scene type identification(calibratedSceneID)
• AERI LW HBB 2min NESR estimate #2 derived from sequential HBB views (ch1)(HBB2minNENEstimateNo2Ch1)
• Sun sensor intensity(sunSensorIntensity)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENEstimateNo2Ch2)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Longwave HBB noise-equivalent radiance(LW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)

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

• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• HBB view radiance standard deviation (2282_2287 cm^-1)(HBBviewStdDevRadiance2282_2287)
• Longwave radiance average (700_705 cm^-1) elevated air(elevatedLayerRadiance700_705)
• Radiance standard deviation during sky view averaged over (2295_2300 cm^-1)(skyViewStdDevRadiance2295_2300)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• AERI instrument unit serial number(AERIunitNumber)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Hot blackbody temperature - apex(HBBapexTemp)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• Scene mirror position count; number of viewers in a sequence(sceneMirPosCount)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Calibrated scene type identification(calibratedSceneID)
• Sky View Imaginary Radiance (675_680 cm^-1)(skyViewImaginaryRadiance675_680)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• FFOV half angle(FFOVhalfAngle)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• AERI instrument data channel number(channelNumber)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Relative humidity measured near Blackbodies. Use with air temperature near BBs
  only.(atmosphericRelativeHumidity)
• Blackbody controller unit 2 power supply temperature(BBcontroller2temp)
• Logical flag indicating that a data record is missing (true/false)(missingDataFlag)
• ABB View Radiance Std Deviation (675_680 cm^-1)(ABBviewStdDevRadiance675_680)
• Sky view imaginary radiance (2282_2287 cm^-1)(skyViewImaginaryRadiance2282_2287)
• Ingest computer temperature(computerTemp)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Scene mirror motor case temperature(mirrorMotorTemp)
• HBB view radiance standard deviation (675_680 cm^-1)(HBBviewStdDevRadiance675_680)
• HBB View Radiance Std Deviation (2295_2300 cm^-1)(HBBviewStdDevRadiance2295_2300)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm^-1(SWskyNEN)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Detector Temperature(detectorTemp)
• Sky View Imaginary Radiance (2295_2300 cm^-1)(skyViewImaginaryRadiance2295_2300)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
• Electronics rack ambient temperature(rackAmbientTemp)
• Signal conditioning electronics inside air temperature(SCEtemp)
• Longwave scene NEN limit(LWskyNENlimit)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• ABB view radiance standard deviation (2510_2515 cm^-1)(ABBviewStdDevRadiance2510_2515)
• Version number of Operational Software(systemReleaseNumber)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Observation date(dateYYMMDD)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Logical flag indicating whether any data is available at current time
  (true/false)(dataAvailable)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• Original Laser Wavenumber(originalLaserWavenumber)
• Time offset from base_time(time_offset)
• Front End Fan Airflow Unheated Temperature(frontEndFanAirUnheatedTemp)
• Observation altitude(Altitude)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Front end fan air temperature difference(frontEndFanAirTempDiff)
• Blackbody controller unit 1 power supply temperature(BBcontroller1temp)
• Radiance standard deviation during sky view averaged over (985_990 cm^-1)(skyViewStdDevRadiance985_990)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Scene mirror view angle in non-negative degrees, measured clockwise from nadir
  looking into interferometer window(sceneMirrorAngle)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• base time in epoch(base_time)
• Observation longitude(Longitude)
• Longwave window radiance average (985_990 cm^-1)(longwaveWindowRadiance985_990)
• Decimal representation of percentage weighting of hot blackbody apex temperature(HBBapexTempWeight)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Maximum temperature difference between ABB thermistors(ABBmaxTempDiff)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• HBB view radiance standard deviation (985_990 cm^-1)(HBBviewStdDevRadiance985_990)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Resistive temperature of 2500 ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Shortwave HBB Noise-equivalent Radiance(SW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (2510_2515 cm^-1)(skyViewStdDevRadiance2510_2515)
• 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)
• Expanded Spectral Buffer Size(expandedInterferogramSize)
• Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
  Valid Range -3:Neither Open Nor Closed(hatchOpen)
• Ambient blackbody temperature(ABBbottomTemp)
• ABB View Radiance Std Deviation (2295_2300 cm^-1)(ABBviewStdDevRadiance2295_2300)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Longwave HBB noise-equivalent radiance(LW_HBB_NEN)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Julian Day including day and fraction of day(JulianDay)
• Optics Compartment Relative Humidity(opticsCompartmentRelativeHumidity)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• ABB View Radiance Std Deviation (2282_2287 cm^-1)(ABBviewStdDevRadiance2282_2287)
• HBB view radiance standard deviation (2510_2515 cm^-1)(HBBviewStdDevRadiance2510_2515)
• Sky View Imaginary Radiance (700_705 cm^-1)(skyViewImaginaryRadiance700_705)
• Character string containing instrument name(instrumentUnitNumber)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Duration of scene view(sceneViewDuration)
• Interferometer Window Temperature(interferometerWindowTemp)
• Observation latitude(Latitude)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• HBB view radiance standard deviation (700_705 cm^-1)(HBBviewStdDevRadiance700_705)
• Rain sensor analog output(rainSensorIntensity)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Decimal representation of percentage weighting of ambient blackbody apex
  temperature(ABBapexTempWeight)
• Shortwave radiance average (2295_2300 cm^-1) Surface Air(surfaceLayerRadiance2295_2300)
• Sun sensor intensity(sunSensorIntensity)
• Blackbody cavity geometry factor(BBcavityFactor)
• Limit in Hot-blackbody Temperature Drift(HBBtempDriftLimit)
• Shortwave window radiance average (2510_2515 cm^-1)(shortwaveWindowRadiance2510_2515)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• Hot blackbody temperature - rim top(HBBtopTemp)
• North Latitude(lat)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• -180.0 - +180.0(alt)
• Shortwave scene NEN limit(SWskyNENlimit)
• Stirling cycle cooler current(coolerCurrent)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Shortwave radiance average (2282_2287 cm^-1) elevated air(elevatedLayerRadiance2282_2287)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Maximum temperature difference between HBB thermistors(HBBmaxTempDiff)
• lon(lon)
• Spare temperature sensor (location TBD)(spareTemp)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the scene view(HBBtempDrift)
• ABB view radiance standard deviation (700_705 cm^-1)(ABBviewStdDevRadiance700_705)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• Longwave window brightness temperature from radiance average (985_990 cm^-1)(longwaveWindowAirTemp985_990)
• Time at center of AERI sky observation period(timeHHMMSS)
• Number of terms in FFOV corrections(numberOfTerms)
• Front End Fan Airflow Heated Temperature(frontEndFanAirHeatedTemp)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Interferometer Enclosure Relative Humidity(interferometerEnclosureRelativeHumidity)
• Two minute noise estimate factor(twoMinuteNoiseEstimateFactor)
• Time at center of AERI sky observation period(Time)

• (Raw data stream - documentation not supported)