SGP/MFR10M/C1 - Head temperature problems

Head temperature control was not functioning during the specified period.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

SGP/MFR10M/C1 - Artifact in data

A cable was hanging under the instrument and was in the field of view of the instrument. 
This resulted in some erroneous increases in the data, frequently around 22GMT. These 
increases are likely from specular reflections off the cable.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Dummy altitude for Zeb(alt)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• base time(base_time)
• lon(lon)
• lat(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• Data Logger Supply Voltage(logger_volt)

• lat(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Time offset of tweaks from base_time(time_offset)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• base time(base_time)
• Detector Temperature(head_temp)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• lon(lon)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Dummy altitude for Zeb(alt)

• null(Raw data stream - documentation not supported)

SGP/BRS/C1 - NIP sensor failure

Normal incidence values of downwelling shortwave radiation were
               reported as -9999 (missing).  The NIP instrument was damaged by
               lightning in the area near the time of failure.

• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)

• null(Raw data stream - documentation not supported)

• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)

SGP/BRS/C1 - Monthly Summary

Data quality this site-month is poor. This is due largely to the missing Upwelling
Shortwave and Upwelling Longwave the entire month. This problem has been ongoing for
several months now. DQPR # 124 asserted that the Global PSP was recording inaccurate
readings. Thus, the Global PSP was changed out on the 17th by site ops. Prior to the
17th, the Global PSP was falling below nighttime empirical limits on most nights and
there were severe 3 component failures during the day. The change out of the PSP
mitigated the severity of the 3 component failures and eliminated the nighttime empirical
limits failures. There were still substantial 3 component flags after the 17th.

• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)

SGP/MFR10M/C1 - Data discontinuities of unknown origin

There is a discontinuity in the data (all channels) just before 1930 UTC on Jan 20, 2005 
and just after 1500 UTC on June 27, 2003.  There is nothing unusual in the temp or volt 
data.  At these times the tower was lowered for cleaning so the initial assumption was the 
instrument was dirty, and a cleaning resulted in the discontinuity.  This theory doesn't 
hold up well though as the tower is lowered for instrument cleaning regularly and these 
are the only two times in the past few years that a discontinuity coinciding with a 
lowering of the tower has resulted .  Down pointing instruments are also not prone to 
collecting dust and dirt.  This instrument is located on the E13 SIRS tower and the down pointing 
PSP does not show a discontinuity at either time, which further discounts the dirty 
instrument theory.  Site operations were asked to check the instrument mount to see if it was 
loose possibly causing the instrument to change its position, and they reported that the 
mount seemed secure and stable.  So as of now, this issue is a mystery.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

• null(Raw data stream - documentation not supported)

SGP/MFR10M/C1 - Dip in data at solar noon

On clear days there is a dip in the data (all channels) at solar noon that is more 
pronounced during the winter months.  While we currently don't know the cause of this dip, we 
believe it is related to reflections off the tower pole.  The working theory says at solar 
noon the north-south crossbar shades the tower pole cutting off reflections into the 
detector.  If true, this means data on either side of the dip are being enhanced by 
reflections and the data within the dip are actually "correct."  An experiment is being planned 
for next fall that will wrap the upper portion of the tower in a non-reflecting cloth.  
This should determine if the dip is related to reflections from the tower pole.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

• null(Raw data stream - documentation not supported)

SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients

Lightening strike on or near 6/2/2004 took the BRS NIP(31747E6) out of service, on or near 
6/15 the NIP was replaced and the datalogger program was changed to reflect the new 
NIP(31343E6). On 8/5/2004 the DIR (Downwelling longwave) instrument was changed out and a new 
program was loaded to reflect a new DIR.  The new program contained the original 
installed shortwave instrument calibration coefficients including NIP 31747E6. Thus from 8/5 to 
when the shortwave instruments were changed out on 12/3 the wrong s/n and calibration 
factor (i.e. 31747E6) was applied to the actual NIP(31343E6)installed at BRS C1.

• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)

• null(Raw data stream - documentation not supported)

• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)

SGP/BRS/C1 - Monthly Summary

Data quality this site-month is good. The offset in the Global PSP has been much improved, 
with an average nighttime offset of -4 W/m^2, since measures were taken on 17 DEC 2004 
to fix it. The Global PSP does not go below nighttime empirical limits all month. Global 
does fall below daytime empirical limits for significant time periods on the 2, 4, 5, 12, 
28, 30. There were still substantial 3 component flags 17 DEC 2004. The charcteristic 
three component failures are present through out the month, especially closer to the end of 
the month. The problem is about equally as bad in the morning as the evening.

The flags are usually high level yellow at their worst for any given day. Finally, there 
are the typical three component flags on the 29th as well, but these occur under cloudy 
skies. The data return to normal the next day and a cause for the problem cannot be 
determined.

• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)

SGP/BRS/C1 - low downwelling shortwave readings

Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are 
consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in 
clear-sky conditions. Corrective maintenance on 12/17/2004 corrected this offset.  It is not 
clear which CM action corrected the problem since the DS instrument cable was grounded to 
a new location and the DS ventilator fan was found in poor condition and was replaced.  
Either of these issues could have led to the problem observed in this instrument.

• Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
  Voltage(inst_global)

• null(Raw data stream - documentation not supported)

• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)

SGP/MFR10M/C1 - Missing data

Data are missing and unrecoverable.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Dummy altitude for Zeb(alt)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• base time(base_time)
• lon(lon)
• lat(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• Data Logger Supply Voltage(logger_volt)

• lat(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Time offset of tweaks from base_time(time_offset)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• base time(base_time)
• Detector Temperature(head_temp)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• lon(lon)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Dummy altitude for Zeb(alt)

SGP/BRS/C1 - Reprocessed: Longwave Calibration error

Modified pyrgeometer calibration procedures were implemented beginning in June 2004. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.

• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

SGP/IRT/C1 - UPS failing

The IRT data were intermittently bad during this period due to a failing UPS. The problem 
was corrected by replacing the UPS.

• Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• Battery Voltage(internal_voltage)
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

SGP/AERI/E14 - Reprocess: Incorrect altitude reported

• Observation Altitude(Altitude)
• Dummy altitude for Zeb(alt)

• Observation Altitude(Altitude)
• Dummy altitude for Zeb(alt)

• Observation Altitude(Altitude)
• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)
• Observation Altitude(Altitude)

SGP/AERI/E14 - Failing interferometer

The interferometer of the sgpE14 AERI system began to fail around 1 Aug 2007. In this 
period of time, the interferometer was occasionally 'losing a fringe' and thus introducing 
phase shift errors into the data.  After this happened a number of times, the 
interferometer would lock up and no data could be collected until site operations reset the instrument.  

Not all of the data collected during this period are bad (only the samples that were 
affected by a phase shift -- about 10% to 25% of data collected each month during the period 
were bad) while the rest of the data is of good quality.

The instrument mentor has created Data Quality files that users can use to identify these 
bad samples and exclude them from their analysis.  Thus, the data for this period are 
coded "suspect", because the lion's share of points are actually good but there is a fair 
number of samples that are bad and should not be used.

• 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)
• Wave number(wnum)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• AERI instrument data channel number(channelNumber)
• time(time)
• Observation date(dateYYMMDD)
• Time offset of tweaks from base_time(time_offset)
• Duration of scene view(sceneViewDuration)
• BB Support Structure Temperature(BBsupportStructureTemp)
• lat(lat)
• lon(lon)
• Version number of Operational Software(systemReleaseNumber)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Observation Altitude(Altitude)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Character string containing instrument name(instrumentUnitNumber)
• Time (HHMMSS)(timeHHMMSS)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Dummy altitude for Zeb(alt)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• base time(base_time)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Observation longitude(Longitude)
• 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)

• Dummy altitude for Zeb(alt)
• Retrieval rejection flag(aqc_retrievalRejectionFlag)
• air temperature (NGM250 predicted)(temperature)
• Time offset of tweaks from base_time(time_offset)
• time(time)
• CPL retrieval of water vapor mixing ratio(CPL_waterVaporMixingRatio)
• Cloud base height(cloudBaseHeight)
• Array of heights for the range gates(height)
• CPL retrieval of dewpoint temperature(CPL_dewpointTemp)
• Constant pressure level(CPL)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• lat(lat)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
• Auxiliary inputs used for this retrieval(auxDataFlagsNow)
• CPL retrieval of ambient temperature(CPL_ambientTemp)
• Interpolated dewpoint temperature(dewpointTemperature)
• Auxiliary inputs used today(auxDataFlagsToday)
• CPL height array for the profile(CPL_height)
• CPL retrieval of atmospheric pressure(CPL_pressure)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• base time(base_time)
• lon(lon)
• Profile source flag(profile_source_flag)

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

• Time offset of tweaks from base_time(time_offset)
• CPL retrieval of dewpoint temperature(CPL_dewpointTemp)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Interpolated dewpoint temperature(dewpointTemperature)
• air temperature (NGM250 predicted)(temperature)
• Constant pressure level(CPL)
• Dummy altitude for Zeb(alt)
• Retrieval rejection flag(aqc_retrievalRejectionFlag)
• CPL retrieval of water vapor mixing ratio(CPL_waterVaporMixingRatio)
• CPL retrieval of atmospheric pressure(CPL_pressure)
• base time(base_time)
• lat(lat)
• Auxiliary inputs used for this retrieval(auxDataFlagsNow)
• Profile source flag(profile_source_flag)
• CPL height array for the profile(CPL_height)
• Cloud base height(cloudBaseHeight)
• Array of heights for the range gates(height)
• CPL retrieval of ambient temperature(CPL_ambientTemp)
• Auxiliary inputs used today(auxDataFlagsToday)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• time(time)
• lon(lon)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)

• wavenumbers for standard deviation of radiance spectra(wnum2)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• base time(base_time)
• Time offset of tweaks from base_time(time_offset)
• AERI instrument unit serial number(AERIunitNumber)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• lat(lat)
• Wave number(wnum)
• Observation longitude(Longitude)
• Observation latitude(Latitude)
• BB Support Structure Temperature(BBsupportStructureTemp)
• 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)
• time(time)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• AERI instrument data channel number(channelNumber)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Observation Altitude(Altitude)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• 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)
• 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)
• 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)
• Detector temperature sensed via diode near detector(detectorTemp)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• AERI instrument data channel number(channelNumber)
• Duration of scene view(sceneViewDuration)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Observation Altitude(Altitude)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• 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)
• time(time)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• 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)
• Number of views in a sequence(sceneMirPosCount)
• 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 ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_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)
• Spare temperature sensor (location TBD)(spareTemp)
• Signal conditioning electronics inside air temperature(SCEtemp)
• Number of terms used in finite field of view correction(numberOfTerms)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• 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)
• Scene mirror motor case temperature(mirrorMotorTemp)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• 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)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• AERI instrument unit serial number(AERIunitNumber)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• 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)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• 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)
• 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)
• 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 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)
• lat(lat)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Dummy altitude for Zeb(alt)
• 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)
• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Stirling cycle cooler current(coolerCurrent)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Time (HHMMSS)(timeHHMMSS)
• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Ambient blackbody temperature(ABBbottomTemp)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• 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)
• 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)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• 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)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• 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 sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• 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)
• 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)
• 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)
• 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)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• Version number of Operational Software(systemReleaseNumber)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• 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)
• lon(lon)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)

• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• 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(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)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Observation date(dateYYMMDD)
• 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)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Wave number in reciprocal centimeters(wnumsum1)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• 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 LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• 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)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• 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)
• 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)
• Wave number in reciprocal centimeters(wnumsum12)
• AERI instrument unit serial number(AERIunitNumber)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• 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)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• lat(lat)
• Observation Altitude(Altitude)
• Wave number in reciprocal centimeters(wnumsum2)
• Wave number in reciprocal centimeters(wnumsum7)
• Character string containing instrument name(instrumentUnitNumber)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Wave number in reciprocal centimeters(wnumsum11)
• Wave number in reciprocal centimeters(wnumsum9)
• xxx(dataAvailable)
• 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)
• Ambient air temperature at hatch opening(outsideAirTemp)
• 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)
• Julian Day including day and fraction of day(JulianDay)
• Time at center of AERI sky observation period(Time_UTC_hours)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• time(time)
• AERI instrument data channel number(channelNumber)
• 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)
• lon(lon)
• Version number of Operational Software(systemReleaseNumber)
• Wave number in reciprocal centimeters(wnumsum13)
• Observation latitude(Latitude)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Duration of scene view(sceneViewDuration)
• 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)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)

• 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 longitude(Longitude)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Duration of scene view(sceneViewDuration)
• Observation latitude(Latitude)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• AERI instrument unit serial number(AERIunitNumber)
• Observation date(dateYYMMDD)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• lat(lat)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Julian Day including day and fraction of day(JulianDay)
• Time (HHMMSS)(timeHHMMSS)
• Observation Altitude(Altitude)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• base time(base_time)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• time(time)
• Ambient air temperature at hatch opening(outsideAirTemp)
• AERI instrument data channel number(channelNumber)
• Dummy altitude for Zeb(alt)
• Version number of Operational Software(systemReleaseNumber)
• Character string containing instrument name(instrumentUnitNumber)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• 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 offset of tweaks from base_time(time_offset)
• Wave number(wnum)
• lon(lon)

SGP/MFR10M/C1 - Tower lowered for maintenance

The 10-m tower at the central facility central cluster was lowered
by site operations personnel for maintenance and repair activities.  
During this time interval, the multifilter radiometer on the tower 
had a field of view that were altered, possibly to include some sky 
radiation.  Data from this sensor should not be included in any 
analyses, for the specified time interval and location.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

SGP/MFR10M/C1 - New datalogger PROM

The sgpmfr10m datalogger had its PROM upgraded during a visit by the instrument mentors. 
The new PROM is Version 13 with the capability of operating the MFR heater without a 
shadowband motor attached to the MFR head. No operating changes resulted from this upgrade.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

SGP/MFR10m/C1 - Small intermittent time stamp error

The internal code that runs the MFR data logger had a bug that occasionally caused the 
time stamp associated with the data to be slightly in error.  This error is thought to be 
very small (say less than 30 seconds) and very infrequent.  (Unfortunately, we cannot give 
firm estimates of the magnitude and frequency of the error).

Also, the upwelling MFR measurements were contaminated by electrical noise originating 
from the heater contained in the sensor head.  During the time the sensor head was polled by 
the data logger, the heater would strobe "on and off", and the noise caused by this 
strobing could greatly contaminate the data.  Some of the data is so contaminated that it is 
virtually useless.   

After 96/03/27 these problems were corrected.  Those who use the data before this time 
should realize that the time stamp for each record of data might be slightly in error, and 
the data could be very noisy due to the heater switching on and off.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• base time(base_time)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Time offset of tweaks from base_time(time_offset)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• base time(base_time)
• Detector Temperature(head_temp)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

SGP/MFR10M/C1 - Corrupt or truncated data

On about 96/08/18, the data logger board for the downlooking 10m MFR was modified to test 
an upgrade.  Unfortunately this upgrade did not work as planned, and some data was either 
corrupted or truncated.  You can't miss the corrupted data (from which you can infer 
albedos much greater than one!).  The truncated data is truncated in time, by which we mean 
that only a half day's worth of data was collected.  The daily time span of these 
truncated data is from midnight to about 1 PM (local time). At about 96/10/03, these problems 
were corrected.

Note:  The "begin date" given for this DQR may be off a day or two, so beware.

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Fields flagged by callang: 0 = No Flag\n,(callang_flags)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

SGP/MFR10M/C1 - Head heater not working

On 19990415, the tower upon which the 10-m MFR was mounted was dismantled and replaced 
with a so-called "tippy tower".  After the 10-m MFR was reinstalled on the new tower, the 
mfr head heater did not work, or worked intermittently (at best).  A new mfr head was 
installed on 99.09.02 and that solved the problem.  

Data was collected from the old head in the morning up to the time it was replaced.  Once 
the new head was installed, data collection resumed.  There's a gap of about an hour 
between the time the old head was removed and the new head was installed.  If we try to gauge 
how well the old head was calibrated by comparing the two segments of data (old head, 
new head) it appears as if the old head remained in a good state of calibration even though 
the head heater was not working.

• Detector Temperature(head_temp)

• Detector Temperature(head_temp)