NSA/MFR10m/C2 - Head heater failed

When the Atqasuk MFR10m was reinstalled Mar 29 2002,
the head heater failed to operate and the head
temperature followed ambient

April 20 2002, the problem was corrected and the head
temperature is now operating in the normal range

• null(Raw data stream - documentation not supported)

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

NSA/MFR10M/C2 - Unstable detector temperature

Detector temperature had a sudden drop and came gradually back up to normal. Photo diode 
detectors are temperature sensitive so data may be off an unquantified amount during this 
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 Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Detector Temperature(head_temp)
• 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 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

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

SGP/OKM/X1 - Overview of Automated Data Quality - June 2002

Below is a link to an overview from Janet Martinez, the Mesonet QA manager
of the automated quality assurance results for the June 2002 
Oklahoma Mesonet Data.

 
http://www.db.arm.gov/~pcdmgr/post_script_attachments/sgpokmqaX1.a1.20020601.000000.doc 

• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)

• standard deviation of wind direction(wdir_sigma)
• standard deviation of wind speed(wspd_sigma)
• Relative humidity inside the instrument enclosure(rh)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• vector average wind magnitude(wvec_10m)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• Retrieved pressure profile(pres)

• vector average of wind direction measured at 10m(wdir_10m)
• solar radiation(srad)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• vector average wind magnitude(wvec_10m)

• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• 10 cm soil temp(tsoil10)

SGP/OKM/X1 - Overview of Automated Data Quality - July 2002

Below is a link to an overview from Janet Martinez, the Mesonet QA manager
of the automated quality assurance results for the July 2002 
Oklahoma Mesonet Data.

 
http://www.db.arm.gov/~pcdmgr/post_script_attachments/sgpokmqaX1.a1.20020701.000000.doc 

• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)

• standard deviation of wind direction(wdir_sigma)
• standard deviation of wind speed(wspd_sigma)
• Relative humidity inside the instrument enclosure(rh)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• vector average wind magnitude(wvec_10m)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• Retrieved pressure profile(pres)

• vector average of wind direction measured at 10m(wdir_10m)
• solar radiation(srad)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• vector average wind magnitude(wvec_10m)

• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• 10 cm soil temp(tsoil10)

NSA/MFR10M/C2  - Head temp out of tolerance

Beginning on 06/03, the 415 nm channel appears to be erratic or noisy at times, which does 
not coincide with the other channels.  Maintenance on 07/02 corrected this problem.

head_temp readings occasionally spike or are erratic, especially between 1500 and 2000 
UTC.  On 06/17, head_temp readings became ambient due to a bad signal cable connection.  
Maintenance on 07/02 ended this problem as well.

Due to the head_temp readings becoming largely out of tolerance, all channel readings 
should be considered questionable, especially after 06/17.

• null(Raw data stream - documentation not supported)

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

SGP/OKM/X1 - Station Change

The Mesonet station near Marshall was moved on September 25, 2003 to improve accessiblity 
for the Mesonet technicians who visit and maintain the site. 
The new site has the code MRSH. It replaces the old Marshall site that
had the code MARS. Since the latitude and longitude of the stations are
included in the cdf file, users of these data should not have a problem.

• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• lat(lat)
• lon(lon)
• soil temperature at 10cm beneath bare soil(tbare10)
• Time offset of tweaks from base_time(time_offset)
• soil temperature at 5 cm beneath bare soil(tbare5)
• Dummy altitude for Zeb(alt)
• base time(base_time)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• Batter Voltage(vbat)

• standard deviation of wind speed(wspd_sigma)
• air temperature at 1.5m(tdry_1_5m)
• base time(base_time)
• lat(lat)
• precipitation(prec_amt)
• lon(lon)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• standard deviation of wind direction(wdir_sigma)
• Relative humidity inside the instrument enclosure(rh)
• vector average wind magnitude(wvec_10m)
• Time offset of tweaks from base_time(time_offset)
• Dummy altitude for Zeb(alt)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)

• average wind run (arithmetic average speed) at 10m(wspd_10m)
• air temperature at 1.5m(tdry_1_5m)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• Dummy altitude for Zeb(alt)
• vector average of wind direction measured at 10m(wdir_10m)
• lat(lat)
• solar radiation(srad)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• precipitation(prec_amt)
• base time(base_time)
• lon(lon)
• vector average wind magnitude(wvec_10m)

• Batter Voltage(vbat)
• Time offset of tweaks from base_time(time_offset)
• soil temperature at 30 cm beneath bare soil(tbare30)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• leaf wetness index, measurement of dew ranging from 0 (dry) to 100(wet)(leaf_ind)
• lon(lon)
• base time(base_time)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• Dummy altitude for Zeb(alt)
• 10 cm soil temp(tsoil10)
• lat(lat)

• null(Raw data stream - documentation not supported)

SGP/OKM/X1 - Overview of Automated Data Quality - October 2002

Below is a link to an overview from Janet Martinez, the Mesonet QA manager
of the automated quality assurance results for the October 2002 
Oklahoma Mesonet Data.

 
http://www.db.arm.gov/~pcdmgr/post_script_attachments/sgpokmqaX1.a1.20021001.000000.htm 

• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)

• standard deviation of wind direction(wdir_sigma)
• standard deviation of wind speed(wspd_sigma)
• Relative humidity inside the instrument enclosure(rh)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• vector average wind magnitude(wvec_10m)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• Retrieved pressure profile(pres)

• vector average of wind direction measured at 10m(wdir_10m)
• solar radiation(srad)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• vector average wind magnitude(wvec_10m)

• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• 10 cm soil temp(tsoil10)

SGP/OKM/X1 - Overview of Automated Data Quality - January 2003

Below is a link to an overview from Janet Martinez, the Mesonet QA manager
of the automated quality assurance results for the January 2003 
Oklahoma Mesonet Data.

 
http://www.db.arm.gov/~pcdmgr/post_script_attachments/sgpokmqaX1.a1.20030101.000000.htm 

• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)

• standard deviation of wind direction(wdir_sigma)
• standard deviation of wind speed(wspd_sigma)
• Relative humidity inside the instrument enclosure(rh)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• vector average wind magnitude(wvec_10m)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• Retrieved pressure profile(pres)

• vector average of wind direction measured at 10m(wdir_10m)
• solar radiation(srad)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• vector average wind magnitude(wvec_10m)

• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• 10 cm soil temp(tsoil10)

SGP/OKM/X1 - Overview of Automated Data Quality - February 2003

Below is a link to an overview from Janet Martinez, the Mesonet QA manager
of the automated quality assurance results for the February 2003 
Oklahoma Mesonet Data.

 
http://www.db.arm.gov/~pcdmgr/post_script_attachments/sgpokmqaX1.a1.20030201.000000.htm 

• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 5 cm beneath bare soil(tbare5)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• 10 cm soil temp(tsoil10)
• soil temperature at 5 cm beneath natural sod cover(tsoil5)

• standard deviation of wind direction(wdir_sigma)
• standard deviation of wind speed(wspd_sigma)
• Relative humidity inside the instrument enclosure(rh)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• vector average wind magnitude(wvec_10m)
• average wind speed at 2m(wspd_2m)
• solar radiation(srad)
• vector average of wind direction measured at 10m(wdir_10m)
• air temperature at 9m(tdry_9m)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• Retrieved pressure profile(pres)

• vector average of wind direction measured at 10m(wdir_10m)
• solar radiation(srad)
• average wind run (arithmetic average speed) at 10m(wspd_10m)
• Retrieved pressure profile(pres)
• Relative humidity inside the instrument enclosure(rh)
• average wind speed at 2m(wspd_2m)
• air temperature at 1.5m(tdry_1_5m)
• precipitation(prec_amt)
• air temperature at 9m(tdry_9m)
• standard deviation of wind direction(wdir_sigma)
• maximum 3-second wind speed within the 5-minute averaging period(wspd_max)
• standard deviation of wind speed(wspd_sigma)
• vector average wind magnitude(wvec_10m)

• soil temperature at 5 cm beneath natural sod cover(tsoil5)
• soil temperature at 10cm beneath bare soil(tbare10)
• soil temperature at 30 cm beneath natural sod cover(tsoil30)
• soil temperature at 5 cm beneath bare soil(tbare5)
• 10 cm soil temp(tsoil10)

NSA/SKYRAD/C1 - Tracker Inoperative

A blown fuse resulted in the tracker not shading the PIR and B&W
and the NIP not following the sun.

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)

NSA/SKYRAD/C1 - itermittant IRT bias

A problem with the SKYRAD IRT that itermittantly produced a gradual increase in the sky 
temperature measurement then a sudden correction, as compared to AERI, appears to have been 
caused by a combination of a failing IR detector, a poor signal cable, a contaminated 
(with condensation or frost) mirror or lens, and low ambient temperatures. The positive 
bias was apparently not consistant in either frequency or duration but on days when the 
unusual behavior is observed, it usually occurred from about 00:00 to 06:00 local time. 

The instrument was repaired and recalibrated and the signal cable replaced.

• Sky Infra Red Temperature Minima(sky_ir_temp_min)
• Sky Infra Red Temperature Maxima(sky_ir_temp_max)
• Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)
• Sky Infra-Red Temperature(sky_ir_temp)

NSA/NIMFR/C1 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.

• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Time offset of tweaks from base_time(time_offset)
• Detector Temperature(head_temp)
• Direct Normal Narrowband Irradiance, Filter 5, raw data as read(direct_normal_narrowband_filter5_raw)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Dummy altitude for Zeb(alt)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Second Detector Temperature(head_temp2)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Data Logger Supply Voltage(logger_volt)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Direct Normal Narrowband Irradiance, Filter 6, raw data as read(direct_normal_narrowband_filter6_raw)
• Direct Normal Narrowband Irradiance, Filter 2, raw data as read(direct_normal_narrowband_filter2_raw)
• Direct Normal Broadband Irradiance, raw data as read(direct_normal_broadband_raw)
• lat(lat)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 4, raw data as read(direct_normal_narrowband_filter4_raw)
• base time(base_time)
• Tube Temperature(tube_temp)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Direct Normal Narrowband Irradiance, Filter 1, raw data as read(direct_normal_narrowband_filter1_raw)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Direct Normal Narrowband Irradiance, Filter 3, raw data as read(direct_normal_narrowband_filter3_raw)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• time(time)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• lon(lon)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)

• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• base time(base_time)
• Normalized filter function data, filter 2, wavelength value obtained during
  bench calibrations(wavelength_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Data Logger Supply Voltage(logger_volt)
• Elevation Angle(elevation_angle)
• Solar zenith angle(solar_zenith_angle)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Second Detector Temperature(head_temp2)
• Nominal calibration factor, applied to filter6 data(nominal_calibration_factor_filter6)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• lat(lat)
• Nominal calibration factor, applied to filter4 data(nominal_calibration_factor_filter4)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Normalized filter function data, filter 3, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter3)
• Time offset of tweaks from base_time(time_offset)
• Nominal calibration factor, applied to filter1 data(nominal_calibration_factor_filter1)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Normalized filter function data, filter 1, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter1)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Normalized filter function data, filter 3, wavelength value obtained during
  bench calibrations(wavelength_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Normalized filter function data, filter 4, wavelength value obtained during
  bench calibrations(wavelength_filter4)
• Normalized filter function data, filter 2, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter2)
• lon(lon)
• Normalized filter function data, filter 5, wavelength value obtained during
  bench calibrations(wavelength_filter5)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Nominal calibration factor, applied to broadband data(nominal_calibration_factor_broadband)
• Normalized filter function data, filter 4, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter4)
• Nominal calibration factor, applied to filter3 data(nominal_calibration_factor_filter3)
• Tube Temperature(tube_temp)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Normalized filter function data, filter 5, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter5)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Normalized filter function data, filter 6, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter6)
• Detector Temperature(head_temp)
• Nominal calibration factor, applied to filter5 data(nominal_calibration_factor_filter5)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Normalized filter function data, filter 6, wavelength value obtained during
  bench calibrations(wavelength_filter6)
• Air mass(airmass)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Normalized filter function data, filter 1, wavelength value obtained during
  bench calibrations(wavelength_filter1)
• time(time)
• Dummy altitude for Zeb(alt)
• Nominal calibration factor, applied to filter2 data(nominal_calibration_factor_filter2)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Azimuth angle(azimuth_angle)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)

NSA/MFR10M/C1 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.

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

NSA/MFR10M/C2 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.

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

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

NSA/NIMFR/C2 - No data collected during winter

The sun does not rise above the horizon at the NSA sites between November and January each 
year.  During this time period, the MFR instruments are removed and returned to PNNL for 
maintenance and calibration.  The instruments are generally re-installed in March.

• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Dummy altitude for Zeb(alt)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Direct Normal Narrowband Irradiance, Filter 4, raw data as read(direct_normal_narrowband_filter4_raw)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Direct Normal Narrowband Irradiance, Filter 3, raw data as read(direct_normal_narrowband_filter3_raw)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Detector Temperature(head_temp)
• time(time)
• Direct Normal Broadband Irradiance, raw data as read(direct_normal_broadband_raw)
• Direct Normal Narrowband Irradiance, Filter 2, raw data as read(direct_normal_narrowband_filter2_raw)
• base time(base_time)
• lon(lon)
• Tube Temperature(tube_temp)
• Direct Normal Narrowband Irradiance, Filter 1, raw data as read(direct_normal_narrowband_filter1_raw)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Data Logger Supply Voltage(logger_volt)
• lat(lat)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Direct Normal Narrowband Irradiance, Filter 6, raw data as read(direct_normal_narrowband_filter6_raw)
• Direct Normal Narrowband Irradiance, Filter 5, raw data as read(direct_normal_narrowband_filter5_raw)
• Second Detector Temperature(head_temp2)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Time offset of tweaks from base_time(time_offset)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)

• Nominal calibration factor, applied to filter2 data(nominal_calibration_factor_filter2)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Offset subtracted from upwelling hemispheric filter1 data(offset_filter1)
• Normalized filter function data, filter 4, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Normalized filter function data, filter 6, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter6)
• Time offset of tweaks from base_time(time_offset)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Nominal calibration factor, applied to filter1 data(nominal_calibration_factor_filter1)
• Nominal calibration factor, applied to filter4 data(nominal_calibration_factor_filter4)
• Normalized filter function data, filter 3, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter3)
• Cosine of Solar Zenith Angle(cosine_solar_zenith_angle)
• Air mass(airmass)
• Offset subtracted from upwelling hemispheric filter6 data(offset_filter6)
• Tube Temperature(tube_temp)
• base time(base_time)
• lat(lat)
• Detector Temperature(head_temp)
• Nominal calibration factor, applied to filter3 data(nominal_calibration_factor_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Normalized filter function data, filter 4, wavelength value obtained during
  bench calibrations(wavelength_filter4)
• Offset subtracted from upwelling hemispheric broadband data(offset_broadband)
• Second Detector Temperature(head_temp2)
• Nominal calibration factor, applied to broadband data(nominal_calibration_factor_broadband)
• Elevation Angle(elevation_angle)
• Offset subtracted from upwelling hemispheric filter4 data(offset_filter4)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Normalized filter function data, filter 2, wavelength value obtained during
  bench calibrations(wavelength_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Azimuth angle(azimuth_angle)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Normalized filter function data, filter 3, wavelength value obtained during
  bench calibrations(wavelength_filter3)
• lon(lon)
• Offset subtracted from upwelling hemispheric filter2 data(offset_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Normalized filter function data, filter 5, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter5)
• Normalized filter function data, filter 5, wavelength value obtained during
  bench calibrations(wavelength_filter5)
• Data Logger Supply Voltage(logger_volt)
• Normalized filter function data, filter 6, wavelength value obtained during
  bench calibrations(wavelength_filter6)
• Nominal calibration factor, applied to filter5 data(nominal_calibration_factor_filter5)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• time(time)
• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Nominal calibration factor, applied to filter6 data(nominal_calibration_factor_filter6)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Solar zenith angle(solar_zenith_angle)
• Normalized filter function data, filter 1, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter1)
• Dummy altitude for Zeb(alt)
• Offset subtracted from upwelling hemispheric filter5 data(offset_filter5)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Offset subtracted from upwelling hemispheric filter3 data(offset_filter3)
• Normalized filter function data, filter 1, wavelength value obtained during
  bench calibrations(wavelength_filter1)
• Normalized filter function data, filter 2, measured transmittance value obtained
  during bench calibrations(normalized_transmittance_filter2)

NSA/MFR10M/C2 - Incorrect global metadata sensor_location

During the time period specified, the global metadata attribute
sensor_location was incorrectly reported as 60m.  The correct
value is 10m.

• Dummy altitude for Zeb(alt)

NSA/SKYRAD/C1 - IRT failure

The IRT failed and was replaced with a spare.

• Sky Infra Red Temperature Minima(sky_ir_temp_min)
• Sky Infra Red Temperature Maxima(sky_ir_temp_max)
• Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)
• Sky Infra-Red Temperature(sky_ir_temp)

NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors

During the power outage the upwelling global measurement from the PSP instrument shows a 
slight increase from -5 to +0 W/m2.  This is due to removal of thermal offsets induced by 
the AC heater during the power outage.  This heater is installed within the PSP 
ventilator - it is necessary for the NSA/C1 climate.
The upwelling longwave PIR instrument is unaffected due to case and dome temperature 
corrections.
The IRT is AC powered and was not operational during this time period.

• null(Raw data stream - documentation not supported)

• Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal)

• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
  Deviation(up_short_hemisp_std)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

NSA/SKYRAD/C1 - Power outage affecting some SKYRAD instruments

During the power outage the downwelling global measurement from the PSP instrument and 
downwelling diffuse 8-48 instrument shows a slight increase from -5 to +0 W/m2.  This is due 
to removal of thermal offsets induced by the AC heater during the power outage.  This 
heater is installed within the PSP ventilator - it is necessary for the NSA/C1 climate.
The downwelling longwave PIR instrument is unaffected due to case and dome temperature 
corrections.
The IRT is AC powered and was not operational during this time period.

• null(Raw data stream - documentation not supported)

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Sky Infra-Red Temperature(sky_ir_temp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)

• Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
  Voltage(inst_global)
• Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)

NSA/METTWR/C1 - CMH Data missing

CMH dew point and temp data was missing. Since Dew Point and Temp data missing RH% value = 
100% during outage.  Corrosion on power plug was athe problem.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect

The values collected from the ultrasonic wind sensor were intermittently incorrect.  Heavy 
wet snow during blizzard condition was interfering with the ultrasonic readings.

• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/METTWR/C1 - PWS data missing due to blizzard

PWS was offline and data was missing.  A blizzard consisting of heavy wet snow and strong 
winds caused snow impaction in the optics.  The PWS reported missing data as it was 
unable to measure anything meaningful.

• 15 minute Present Weather Code(PwCod15mi)
• 1 minute Average Visibility(AvgVis1mi)
• Instant Present Weather Code(InstPwCod)
• 1 hour Present Weather Code(PwCod1hr)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Precipitation Rate(PcpRate)
• Present Weather Sensor Alarm(PWSAlarm)

NSA/METTWR/C2 - Wind speed values artificially low

Wind speed values were artificially low due to snow/ice accumulation on the anemometer 
cups during blizzard conditions.  The heaters on the cups were not able to keep up with 
conditions.

• Vector Averaged Wind Speed(WinSpeed_U_WVT)
• Arithmetic Mean Wind Speed(WinSpeed_S_WVT)

NSA/METTWR/C2 - CMH Data incorrect

CMH data was incorrect due to blockage of intake by heavy, wet snow during blizzard 
conditions.

• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)

NSA/METTWR/C2 - PWS data incorrect

The Present Weather Sensor measurement optics were blocked by heavy, wet snow during 
blizzard conditions.

• 1 hour Present Weather Code(PWCod1hr)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Present Weather Sensor Alarm(PWSAlarm)
• Precipitation Rate(PCPRate)
• Instant Present Weather Code(InstPWCod)
• Cumulative Water Sum(CumH2O)
• 15 minute Present Weather Code(PWcod15mi)
• 1 minute Average Visibility(AvgVis1mi)

NSA/METTWR/C1 - 2m Wind Speed Artificially Low

The 2m wind speed values were artificially low due to snow impaction during a heavy 
blizzard.  The cup anemometer heaters could not keep up with the rapid deposition of snow.

• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)

NSA/METTWR/C1 - CMH temp inaccurate

The CMH Temperature was consistently 4-7 degrees warmer than the 2M, 40M, 20M, and 10M 
temp. Intake fan failure; fan was replaced.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

NSA/METTWR/C1 - 10m Wind Speed Low

The 10m wind speed values are too low due to ice accumulation on the cup anemometer.

• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)

NSA/METTWR/C1 - 10m Wind Speed Intermittently Low

The 10m wind speeds are intermittently too low due to ice accumulation on the cup 
anemometer.

• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)

NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low

The 40m wind speed values were too low due to ice accumulation on the cup anemometer.

• 40m Vector Averaged Wind Speed(WS40M_U_WVT)
• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)

NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low

The 20m wind speeds were artificially low due to ice accumulation on the cup anemometer.

• 20m Vector Averaged Wind Speed(WS20M_U_WVT)
• 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)

NSA/METTWR/C2 - CMH Intake Fan Failure

Intake fan failing causing poor readings from the CMH.

• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)

NSA/MFR10M/C2 - Detector head not being heated

Head heater was not operational during the period specified.

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

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

NSA/MFR10M/C1 - Head not being heated

Head heater was not operational during the period specified.

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

NSA/METTWR/C2 - CMH Data Suspect

CMH data was suspect due to incorrect intake fan installed.  Proper spares were not on 
hand.

• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)

NSA/METTWR/C2 - CMH Data Suspect

CMH data was suspect due to blockage of intake by snow.

• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)

NSA/METTWR/C1 - CMH Data Missing

CMH data was missing due to it being removed for maintenance.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

NSA/METTWR/C1 - CMH Data Suspect

CMH data was suspect due to incorrect calibration caused by procedural errors.  The 
procedures were corrected and a new calibration completed.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

NSA/METTWR/C1 - Wind direction measurements suspect

20m wind direction standard deviation was 0 degrees for extended periods of time.  This 
suggests the wind vane was icing up.

• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)

NSA/AERI/C1 - Test data not representative of atmosphere

The AERI had high levels of noise and testing was conducted to determine the cause of the 
noise.  These tests occurred June 27 through June 30. Data collected during this time 
should not be used. It was collected to test the instrument and does not represent 
atmospheric data.

The instrument was restarted in the connex using the upgraded Windows rapid sampling 
system on June 30, 2006 beginning 17:00 GMT.

• null(Raw data stream - documentation not supported)

• Standard deviation of the average radiance in the 985-990 wavenumber window
  during the AERI dwell time(aeri_dwell_atm_var_channel_1)
• Standard deviation of the IR temperature ensemble(sdev_irt)
• Ensemble average of 31.4 GHz sky brightness temperature from the MWR(mean_31tbsky)
• Number of observations in each `large` MWR ensemble (23tbsky and 31tbsky)(nobs_mwr_ensembles_large)
• Cloud base height from the MPL(mean_mpl_cbh)
• Dummy altitude for Zeb(alt)
• Standard deviation of 23tbsky ensemble(sdev_23tbsky_large)
• Average of brightness temperatures calculated from AERI radiances within
  spectral window for channel 2: [2506.20,2511.02](mean_AERI_BT_channel_2)
• Standard deviation of the average radiance in the 2510-2515 wavenumber window
  during the AERI dwell time(aeri_dwell_atm_var_channel_2)
• Standard deviation of 31tbsky ensemble(sdev_31tbsky_large)
• Number of clear observations in ensemble(nobs_cloud3_clear)
• Number of observations in each MWR ensemble (23tbsky, 31tbsky, vap, liq)(nobs_mwr_ensembles)
• Calculated cloud cover fraction from the WSI(cloud_cover_fract)
• Standard deviation of liq ensemble(sdev_liq)
• Ensemble average of ratios of direct_norm_broadband divided by
  diffuse_hemisp_broadband from the SIROS(mean_dir_by_diff_ratio)
• Ensemble average of third cloud base height from the Belfort ceilometer(mean_cloud3_cbh)
• Serial number for the sonde used at this time.(sonde_serial_number)
• Cloud detection flag from sgpaerilblcloudsC1.c1(nonclear_flag)
• Ensemble average of total water vapor along LOS path from the MWR(mean_vap)
• Standard deviation of ratio ensemble about mean_dir_to_diff_ratio(sdev_dir_by_diff_ratio)
• Standard deviation of mpl_cbh ensemble(sdev_mpl_cbh)
• Retrieved profile sample time minus sonde launch time(sonde_offset_time)
• AERI sample time minus WSI image time(wsi_offset_time)
• Ensemble average of 23.8 GHz sky brightness temperature from the MWR(mean_23tbsky)
• Standard deviation of 23tbsky ensemble(sdev_23tbsky)
• Ensemble average of first cloud base height from the Belfort ceilometer(mean_cloud1_cbh)
• Data quality flag for MPL cbh ensemble(mpl_cbh_dq_flag)
• Time offset of tweaks from base_time(time_offset)
• Number of foggy observations in ensemble (probably condensation on the window)(nobs_mpl_foggy)
• Number of clear observations in ensemble(nobs_mpl_clear)
• Cloud base height estimate from the field mean_AERI_BT_channel_1(cbh_AERI_channel_1)
• Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
• IR temperature calculated from the AERI spectral response function used to
  mimick the output from the IR thermometer on the MWR(calculated_irt)
• Number of ratios in ensemble(nobs_dir_by_diff_ratio)
• lat(lat)
• Standard deviation of vap ensemble(sdev_vap)
• Average total liquid water along LOS path from the MWR(mean_liq)
• Binary field indicating which inputs are available and used to set the
  nonclear_flag(nonclear_inputs)
• Number of clear observations in ensemble(nobs_cloud2_clear)
• Standard deviation of cloud1 ensemble(sdev_cloud1_cbh)
• Number of cloudy observations in ensemble(nobs_mpl_cbh)
• Standard deviation of 31tbsky ensemble(sdev_31tbsky)
• base time(base_time)
• lon(lon)
• Standard deviation of cloud2 ensemble(sdev_cloud2_cbh)
• Ensemble average of second cloud base height from the Belfort ceilometer(mean_cloud2_cbh)
• Number of clear observations in ensemble(nobs_cloud1_clear)
• Standard deviation of cloud3 ensemble(sdev_cloud3_cbh)
• Average of brightness temperatures calculated from AERI radiances within
  spectral window for channel 1: [1142.20,1147.03](mean_AERI_BT_channel_1)
• Number of cloudy observations in ensemble(nobs_cloud1_cbh)
• Average IR temperature from the IRT (on the MWR)(mean_irt)
• time(time)
• Cloud base height estimate from the field mean_AERI_BT_channel_2(cbh_AERI_channel_2)
• Number of cloudy observations in ensemble(nobs_cloud3_cbh)
• Number of cloudy observations in ensemble(nobs_cloud2_cbh)

• null(Raw data stream - documentation not supported)

• Wave number in reciprocal centimeters(wnumsum9)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Observation longitude(Longitude)
• xxx(dataAvailable)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Wave number in reciprocal centimeters(wnumsum2)
• Time (HHMMSS)(timeHHMMSS)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Observation latitude(Latitude)
• Julian Day including day and fraction of day(JulianDay)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Wave number in reciprocal centimeters(wnumsum3)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Wave number in reciprocal centimeters(wnumsum4)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Duration of scene view(sceneViewDuration)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Time offset of tweaks from base_time(time_offset)
• Wave number in reciprocal centimeters(wnumsum8)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• base time(base_time)
• lat(lat)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Wave number in reciprocal centimeters(wnumsum7)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Wave number in reciprocal centimeters(wnumsum5)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Dummy altitude for Zeb(alt)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• AERI instrument unit serial number(AERIunitNumber)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• 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(wnumsum6)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Observation date(dateYYMMDD)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• 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)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Version number of Operational Software(systemReleaseNumber)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Wave number in reciprocal centimeters(wnumsum12)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Wave number in reciprocal centimeters(wnumsum13)
• Wave number in reciprocal centimeters(wnumsum14)
• time(time)
• Wave number in reciprocal centimeters(wnumsum1)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Wave number in reciprocal centimeters(wnumsum11)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Wave number in reciprocal centimeters(wnumsum10)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• lon(lon)
• Character string containing instrument name(instrumentUnitNumber)
• Observation Altitude(Altitude)
• AERI instrument data channel number(channelNumber)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)

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

• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Observation longitude(Longitude)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Radiance standard deviation during hot blackbody view averaged over (700_705
  cm-1)(HBBviewStdDevRadiance700_705)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• lon(lon)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Hot blackbody temperature - apex(HBBapexTemp)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Character string containing instrument name(instrumentUnitNumber)
• Interferometer window temperature measured on the outside of the aluminum window
  flange(interferometerWindowTemp)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Radiance standard deviation during ambient blackbody view averaged over (675_680
  cm-1)(ABBviewStdDevRadiance675_680)
• Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Spare temperature sensor (location TBD)(spareTemp)
• xxx(dataAvailable)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• 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 (985_990 cm-1)(skyViewStdDevRadiance985_990)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• base time(base_time)
• Dummy altitude for Zeb(alt)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Julian Day including day and fraction of day(JulianDay)
• Radiance standard deviation during hot blackbody view averaged over (2282_2287
  cm-1)(HBBviewStdDevRadiance2282_2287)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Detector temperature sensed via diode near detector(detectorTemp)
• Number of terms used in finite field of view correction(numberOfTerms)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Hot blackbody temperature - rim top(HBBtopTemp)
• Radiance standard deviation during ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Ambient blackbody temperature(ABBbottomTemp)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Interferometer front end fan airflow unheated temperature: used with heated
  temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
• Version number of Operational Software(systemReleaseNumber)
• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• lat(lat)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
• Radiance standard deviation during hot blackbody view averaged over (675_680
  cm-1)(HBBviewStdDevRadiance675_680)
• Time offset of tweaks from base_time(time_offset)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Radiance standard deviation during hot blackbody view averaged over (2295_2300
  cm-1)(HBBviewStdDevRadiance2295_2300)
• Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
• Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
• Radiance standard deviation during ambient blackbody view averaged over (700_705
  cm-1)(ABBviewStdDevRadiance700_705)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Observation date(dateYYMMDD)
• Observation latitude(Latitude)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• Stirling cycle cooler current(coolerCurrent)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Duration of scene view(sceneViewDuration)
• Time (HHMMSS)(timeHHMMSS)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Observation Altitude(Altitude)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Radiance standard deviation during ambient blackbody view averaged over
  (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Blackbody cavity geometry factor(BBcavityFactor)
• Radiance standard deviation during hot blackbody view averaged over (985_990
  cm-1)(HBBviewStdDevRadiance985_990)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• AERI instrument data channel number(channelNumber)
• AERI instrument unit serial number(AERIunitNumber)
• 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)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• time(time)
• Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• Signal conditioning electronics inside air temperature(SCEtemp)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• AERI ingest computer temperature measured at back panel of computer(computerTemp)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Number of views in a sequence(sceneMirPosCount)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• 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)
• Scene mirror motor case temperature(mirrorMotorTemp)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)

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

NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPa

Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.

• Atmospheric Pressure(AtmPress)

NSA/METTWR/C2 - Reprocess: Barometric Data Changed from hPa to kPa

Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.

• Atmospheric Pressure(AtmPress)

NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.

CMH measured data was missing and the derived variables were incorrect due to routine 
maintenance.

• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)

NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.

Present Weather Sensor data was missing or incorrect due to maintenance activities 
repeated approximately daily as we were trying to correct another problem.

• Chilled Mirror Temperature(CMHTemp)
• 1 hour Present Weather Code(PWCod1hr)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Present Weather Sensor Alarm(PWSAlarm)
• Precipitation Rate(PCPRate)
• Instant Present Weather Code(InstPWCod)
• Cumulative Water Sum(CumH2O)
• 15 minute Present Weather Code(PWcod15mi)
• 1 minute Average Visibility(AvgVis1mi)

NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.

Data from the tower is not representative of local conditions due to the tower being 
lowered for radiometer change.  Sensors not attached to the tower such as the Present Weather 
Sensor, the Chilled Mirror Hygrometer and the Barometer were not affected.

• Vector Averaged Wind Speed(WinSpeed_U_WVT)
• 5m Average Calculated Dew Point(DP5m_AVG)
• Arithmetic Mean Wind Speed(WinSpeed_S_WVT)
• Standard Deviation of Vector Averaged Wind Direction(WinDir_SDU_WVT)
• Vector Averaged Wind Direction(WinDir_DU_WVT)
• Standard Deviation of 5m Calculated Vapor Pressure(VP5m_STD)
• 2m Average Temperature(T2m_AVG)
• 5m Average Temperature(T5m_AVG)
• 5m Average Relative Humidity(RH5m_AVG)
• Standard Deviation of 5m Calculated Dew Point(DP5m_STD)
• 5m Average Calculated Vapor Pressure(VP5m_AVG)
• Standard Deviation of 5m Relative Humidity(RH5m_STD)
• 2m Average Calculated Vapor Pressure(VP2m_AVG)
• 2m Average Relative Humidity(RH2m_AVG)
• Standard Deviation of 2m Relative Humidity(RH2m_STD)
• Standard Deviation of 2m Calculated Dew Point(DP2m_STD)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2m_STD)
• Standard Deviation of 5m Temperature(T5m_STD)
• 2m Average Calculated Dew Point(DP2m_AVG)
• Standard Deviation of 2m Temperature(T2m_STD)

NSA/METTWR/C1 - Present Weather Sensor data missing or incorrect due to calibration.

The Present Weather Sensor data was missing or incorrect due to calibration checks.

• 15 minute Present Weather Code(PwCod15mi)
• 1 minute Average Visibility(AvgVis1mi)
• Instant Present Weather Code(InstPwCod)
• 1 hour Present Weather Code(PwCod1hr)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Precipitation Rate(PcpRate)
• Cumulative Water Sum(CumH2O)
• Present Weather Sensor Alarm(PWSAlarm)

NSA/MFR10M/C1 - Channel 415 noise

There are some very minor downward spikes in the 415 channel that were first noticed in 
the daytime data on 9/7/2006.  They occur throughout Sept and less into Oct/Nov.  The 
instrument was pulled on 11/22 and will be examined over the winter.  The spikes really are 
very minor, and at times only appear as minor bulges when the plot is expanded to a very 
large scale.

• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

• 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

NSA/METTWR/C1 - All data from 10m Level Missing

The winch that lowers the tower booms failed.  Manual testing of the motor and winch 
allowed the booms to be lowered briefly and then raised back into position.  A heavy freezing 
rain/icing event added extra weight to the booms.  This extra weight was suspected as the 
cause as to why the 10m boom became disconnected.  After a new motor was installed and 
all booms were lowered and re-raised the 10m level came back on line.

• 10m Average Calculated Dew Point(DP10M_AVG)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• 10m Average QLI Input Voltage(Volt10M_AVG)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10m Average Temperature(T10M_AVG)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)

NSA/METTWR/C1 - Missing CMH data

CMH data are missing.  Corrosion in the serial data line connections caused a loss of 
communication with the CMH.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

NSA/METTWR/C1 - 10m level loss of power

The 10 meter instrument level lost power so all variables from this level are missing.

• 10m Average Calculated Dew Point(DP10M_AVG)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• 10m Average QLI Input Voltage(Volt10M_AVG)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10m Average Temperature(T10M_AVG)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)

NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed

The aspirator fan for the 2m level T/RH probe failed.  This caused higher than normal 
readings for temp and RH and artificially smoothed the data.

• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 2m Average Relative Humidity(RH2M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 2m Average Temperature(T2M_AVG)
• Standard Deviation of 2m Temperature(T2M_STD)
• 2m Average Calculated Dew Point(DP2M_AVG)

NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow

The 2m RH, Dew Point and Vapor Pressure values are incorrect due to the intake of the 
aspirated shield being blocked with snow and ice.  The RH% values are artificially larger 
than the 5m and Chilled Mirror values.

• 2m Average Calculated Vapor Pressure(VP2m_AVG)
• Standard Deviation of 2m Relative Humidity(RH2m_STD)
• 2m Average Relative Humidity(RH2m_AVG)
• Standard Deviation of 2m Calculated Dew Point(DP2m_STD)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2m_STD)
• 2m Average Calculated Dew Point(DP2m_AVG)

NSA/METTWR/C1 - Wind direction sensor frozen

After a power outage the 40m wind direction sensor was frozen.  Data from this sensor was 
not representative of the true winds.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - CMH Sensor Calibrated Incorrectly

The CMH temp and DP were higher than the co-located T/RH probe at the 2m level.  An 
incorrect calibration along with a failing thermistor caused the readings to be incorrect for 
both measured values Temp and Dew Point.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)

NSA/METTWR/C1 - 40m wind sensor heater failure

The 40m wind direction became frozen at times.  The values from the sensor were flat-lined 
(stdev = 0) much of the time and did not match sensors from other levels.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - 40m Wind Direction Data Suspect

The 40m wind direction data was suspect due to icing on the vane or a failing shafter 
heater or a combination of both.  The affected data can be easily seen on comparison plots 
with other levels data or by checking the standard deviation of the 40m wind direction.  
Any standard deviation of less than 0.10 degrees for the 40m level suggest a sluggish/ice 
affected sensor.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - PWS Data Questionable

There was a degradation in the PWS lenses.  New lenses were installed on 08/28/2007 but a 
proper calibration was not conducted until 10/10/2007.  Data  during the listed time 
period should be used with caution.

• 15 minute Present Weather Code(PwCod15mi)
• 1 minute Average Visibility(AvgVis1mi)
• Instant Present Weather Code(InstPwCod)
• 1 hour Present Weather Code(PwCod1hr)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Precipitation Rate(PcpRate)
• Cumulative Water Sum(CumH2O)
• Present Weather Sensor Alarm(PWSAlarm)

NSA/MFRSR/C1 - 940 Channel failure

Channel 940 failed and will not be replaced before the system is removed for calibration 
in the Fall.

• Ratio of direct_normal_narrowband_filter6 to diffuse_hemisp_narrowband_filter6(direct_diffuse_ratio_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)

• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6_raw)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Diffuse Narrowband Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6_raw)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 6(hemisp_narrowband_filter6)

NSA/METTWR/C1 - 20m RH Data Questionable

The 20m RH data was questionable at times.  When the data appeared to be poor was when the 
2m and 20m agreed better than the 20m and the 40m and/or 10m.

• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• 20m Average Relative Humidity(RH20M_AVG)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• 20m Average Calculated Dew Point(DP20M_AVG)

NSA/SKYRAD/C1 - Reprocessed: Incorrect calibration coefficient

Installed Skyrad PSP (downwelling shortwave hemispheric irradiance) had calibration 
coefficient Rs applied when it should have used Rsc.  ARM is using IR corrected Rsc and CFc 
coefficients for PSPs deployed at all facilities.  

PSP #32026 should use RSc@45=8.7578 ?V/W/m? and not Rs@45=8.6335.

Reprocessed to correct downwelling shortwave hemispheric irradiance (DS) by:
DS(new) = (DS(old) / 115.83 ) * 114.18

Reprocessing completed March 2008.

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

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

NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient

Installed Gndrad PSP (upwelling shortwave hemispheric irradiance) had calibration 
coefficient RS applied when it should have used Rsc.  ARM is using IR corrected coefficients 
Rsc@45 and CFc@45 for PSPs deployed at all facilities.  

PSP #32012F3 should use RSc@45=109.39 and not Rs@45=110.97.  

Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by:
US(new) = (US(old) / 110.97 ) * 109.39

Reprocessing completed March 2008.

• Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)

• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
  Deviation(up_short_hemisp_std)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)

NSA/SKYRAD/C1 - Instrument cleaning effects

Starting Dec 16th the Skyrad PIR1 and PIR2 (down_long_hemispheric)started differing by 
greater than 30W/m2 at times.  This is much greater than expected  for these instruments 
(typical is <10-15 W/m2).  NSA OMIS reports and observer comments reveal that PM 
periodically clean the snow from the IRT and ventilator fans on Skyrad and Gndrad.  In the case of 
the Skyrad PIRs, one lies in the wind shadow of the other and builds up more snow which is 
periodically cleaned out and then builds up again causing the PIR1 PIR2 discrepancies.

Disregard down_long_hemispheric during this time period. However, data suggests PIR2 is 
most likely at fault - potentially use PIR1 data during this time period.

• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Minima(down_long_hemisp2_min)
• Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Standard Deviation(down_long_hemisp2_std)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Standard Deviation(down_long_hemisp1_std)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2, Maxima(down_long_hemisp2_max)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Minima(down_long_hemisp1_min)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_dome_temp)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer2(down_long_hemisp2)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer1(inst_down_long_hemisp1_case_temp)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_case_temp)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1(down_long_hemisp1)
• Downwelling Longwave Hemispheric Irradiance, Pyrgeometer1, Maxima(down_long_hemisp1_max)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer2(inst_down_long_hemisp2_dome_temp)
• Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp)

• Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_case_resist)
• Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer2(inst_down_long_hemisp2_tp)
• Instantaneous Downwelling Pyrgeometer Thermopile, Pyrgeometer1(inst_down_long_hemisp1_tp)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_dome_resist)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer2(inst_down_long_hemisp2_case_resist)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer1(inst_down_long_hemisp1_dome_resist)

NSA/SKYRAD/C1 - IRT mirror heater failure

The heater of the IRT gold mirror failed due to a broken wire (that probably occurred on 
12/13 during maintenance of the solar tracker) allowing snow and frost to accumulate on 
the mirror until it was cleared during daily preventative maintenance. The problem was 
corrected when the heater wires were replaced.

• Sky Infra Red Temperature Minima(sky_ir_temp_min)
• Sky Infra Red Temperature Maxima(sky_ir_temp_max)
• Standard Deviation of Sky Infra Red Temperature(sky_ir_temp_std)
• Sky Infra-Red Temperature(sky_ir_temp)

• Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)

NSA/SKYRAD/C1 - Direct and Diffuse incorrect

The short_direct_normal (NIP) instrument and cable were damaged by tracker rewind 
malfunction. Tracker and NIP replaced on 4/22 2200GMT but tracker not operational until 4/23 
1815GMT.  Thus, down_short_diffuse_hemisp (8-48) was not shaded 4/22 to 4/23.

Do not use 8-48 data from 4/22 to 4/23. NIP data is not recoverable during entire time but 
can be estimated using component sum for each 1 minute data: Direct = (global - 
diffuse)/cos(zenith angle)

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)

• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)

NSA/TSI/X1 - incorrect longitude

The software used to collect images from the TSI deployed at the NOAA/CMDL station was 
configured with the NSA/C1 latitude & longitude of 71? 19.38' N, 156? 36.93' W. The 
longitude should have been 156? 36.68' W. The effect on the shadowband position was minimal.

• lon(lon)

NSA/SKYRAD/C1 - Tracker inoperative

Tracker stopped working at this site during the time range specified. Reason for failure 
is unknown.  Tracker power cycled and restarted by maintenance 06/30 2008 1740 GMT.

The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data are bad during 
this time.  Data are not recoverable.

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)

• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)

NSA/MFRSR/C1 - Incorrect alltime units

Units of alltime_hemisp_broadband and alltime_hemisp_narrowband_filter(N) are incorrect.  
They should be counts.  A low priority reprocessing task has been submitted to correct 
this metadata error.

• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)

NSA/MFRSR/C2 - Incorrect alltime units

Units of alltime_hemisp_broadband and alltime_hemisp_narrowband_filter(N) are incorrect.  
They should be counts.  A low priority reprocessing task has been submitted to correct 
this metadata error.

• Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6)
• Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1)
• Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)
• Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4)
• Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2)
• Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband)
• Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5)