Data Quality Reports for Session: 106035 User: sloehrer Completed: 06/13/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040830.4SGP/TWR/C1 - Tower SE-side lowered for maintenancesgp1twr10xC1.b1, sgp30twr10xC1.b1
D050201.1SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry errorsgpsondewnpnC1.b1
D050227.1SGP/SIRS/E24 - Erratic downwelling shortwave datasgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D050412.3SGP/SIRS/E24 - Dirt on domesgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D050421.5SGP/SONDE/C1 - Surface pressure incorrectsgpsondewnpnC1.b1
D050510.1SGP/SONDE/C1 - Surface pressure bad and other data noisysgpsondewnpnC1.b1
D050510.2SGP/SONDE/C1 - Surface pressure incorrectsgpsondewnpnC1.b1
D050520.1SGP/SIRS/E22 - Intermittent upwelling longwave data losssgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
D050603.4SGP/SONDE/C1 - Surface pressure incorrectsgpsondewnpnC1.b1
D050725.1SGP/SONDE/C1 - Bad RH DatasgpsondewnpnC1.b1
D050810.3SGP/SIRS/E20 - Downwelling Shortwave PSP Damaged by LightningsgpsirsE20.00, sgpsirsE20.b1, sgpsirs20sE20.a0
D050811.5SGP/SONDE/C1 - Bad T/RH and surface P.sgpsondewnpnC1.b1
D050912.2SGP/SONDE/C1 - Temperature/RH incorrectsgplssondeC1.c1, sgpsondewnpnC1.b1
D051027.1SGP/SONDE/C1 - Bad RH DatasgpsondewnpnC1.b1
D051117.1SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficientssgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D051121.1SGP/SONDE/C1 - Sonde RH values incorrectsgpsondewnpnC1.b1
D060208.2SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondessgpsondewnpnC1.b1
D060227.2SGP/SONDE/C1 - Soundings done as part of dual-sonde flightssgpsondewnpnC1.b1
D060316.1sgp1twr10xC1.b1, sgp30twr10xC1.b1
D060403.4SGP/SIRS/E20 - Instrument noise problemsgpsirsE20.00, sgpsirsE20.b1, sgpsirs20sE20.a0
D060405.1SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficientssgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
D060424.1SGP/SIRS/E21 - Roosting birds in field of viewsgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
D060616.2sgp1twr10xC1.b1, sgp30twr10xC1.b1
D060630.1SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde FilessgpsondewnpnC1.b1
D060630.26SGP/SIRS/E20 - Reprocessed: Longwave Calibration errorsgpsirsE20.b1
D060630.27SGP/SIRS/E21 - Reprocessed: Longwave Calibration errorsgpsirsE21.b1
D060630.28SGP/SIRS/E22 - Reprocessed: Longwave Calibration errorsgpsirsE22.b1
D060630.29SGP/SIRS/E24 - Reprocessed: Longwave Calibration errorsgpsirsE24.b1
D060630.30SGP/SIRS/E27 - Reprocessed: Longwave Calibration errorsgpsirsE27.b1
D060928.2SGP/SONDE/C1 - RH values offset due to error in ground checksgpsondewnpnC1.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1
D061105.2sgp1twr10xC1.b1, sgp30twr10xC1.b1
D061201.1SGP/SONDE/C1 - RH Sensor failuresgpsondewnpnC1.b1
D061205.2SGP/SIRS/E24 - Spikes in datasgpsirsE24.b1, sgpsirs20sE24.a0
D070320.1SGP/SIRS/E22 - Reprocess: Incorrect calibration coefficientssgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0


DQRID : D040830.4
Start DateStart TimeEnd DateEnd Time
11/19/2003210411/19/20032118
12/08/2003194112/09/20031422
02/10/2004185602/10/20042308
02/13/2004175102/13/20042138
02/20/2004145802/23/20041840
08/05/2004141208/05/20041451
09/27/2004143809/27/20042056
02/14/2006200202/14/20062105
05/31/2006175605/31/20061852
10/11/2006144610/11/20062039
Subject:
SGP/TWR/C1 - Tower SE-side lowered for maintenance
DataStreams:sgp1twr10xC1.b1, sgp30twr10xC1.b1
Description:
The southeast side tower carriage was lowered for maintenance and/or data are off-scale 
during maintenance.
Measurements:sgp1twr10xC1.b1:
  • Relative humidity at 60 m(rh_60m)
  • Relative humidity at 25 m(rh_25m)
  • Vapor pressure at 25 m(vap_pres_25m)
  • 25 m Air Temperature(temp_25m)
  • Vapor pressure at 60 m(vap_pres_60m)
  • 60 m Air Temperature(temp_60m)

sgp30twr10xC1.b1:
  • Vapor pressure at 25 m(vap_pres_25m)
  • Vapor pressure at 60 m(vap_pres_60m)
  • Standard Deviation of 25 m Temperature(sd_temp_25m)
  • 60 m Air Temperature(temp_60m)
  • Standard Deviation of 60 m Vapor Pressure(sd_vap_pres_60m)
  • Standard Deviation of 25 m Relative Humidity(sd_rh_25m)
  • Relative humidity at 25 m(rh_25m)
  • Relative humidity at 60 m(rh_60m)
  • Standard Deviation of 60 m Relative Humidity(sd_rh_60m)
  • Standard Deviation of 60 m Temperature(sd_temp_60m)
  • Standard Deviation of 25 m Vapor Pressure(sd_vap_pres_25m)
  • 25 m Air Temperature(temp_25m)


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DQRID : D050201.1
Start DateStart TimeEnd DateEnd Time
01/19/2005053101/19/20050706
Subject:
SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry error
DataStreams:sgpsondewnpnC1.b1
Description:
There is a discrepency between the surface pressure and temperature data entered by the 
operator and that recorded by the THWAPS.  Review of the raw data from the radiosonde shows 
that the pressure was periodically varying by as much as 12 hPa (~988 to 1000)in the 
time period before launch.  The operator entry of 998.2 is at the high end of this range - 
the concurrent THWAPS reading was about 988.4 at the low end.  The operator entered 
temperature 6.2 degC is considerably higher than the THWAPS value of 1.8.  The pre-flight log 
entry for this sounding is missing from the OMIS database.  If not for the extremely 
unstable pressure reading I would have assumed this was an operator error.  It will take some 
more research to figure out what is going on.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • surface wind speed(wspd)
  • model zonal wind velocity(u_wind)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • pressure at constant pressure surface(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • east longitude for all the input platforms.(lon)
  • Dry-Bulb Temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)


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DQRID : D050227.1
Start DateStart TimeEnd DateEnd Time
02/13/2005194503/17/20051745
Subject:
SGP/SIRS/E24 - Erratic downwelling shortwave data
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
Downwelling shortwave hemispheric readings are occasionally erratic, jumping to very high 
or very low values for short periods of time. SGP PM techs reseated all Downwelling 
Shortwave PSP instrument connections on 3/17/2005 approx 1945GMT.  The problem did not reoccur 
after that time but the DS cable was replaced on 3/31/2005 approx 1815 GMT to ensure the 
problem did not reappear.
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs20sE24.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

sgpsirsE24.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)


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DQRID : D050412.3
Start DateStart TimeEnd DateEnd Time
04/07/2005000004/14/20051610
Subject:
SGP/SIRS/E24 - Dirt on dome
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
The Downwelling Shortwave Hemispheric (DSH) Irradiance data were erratic. The Pyranometer 
instrument dome at this site was likely dirty given the relatively large spread between 
the measured DSH and derived DSH readings during the middle part of the day (up to 50 
W/m^2). Rain on 04/06 most likely contributed to this problem.  Preventative maintenance on 
4/14 effectively cleaned the pyranometer dome.  Preventative maintenance reports indicate 
dry-water spots on dome when it was cleaned on 4/14.
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs20sE24.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

sgpsirsE24.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)


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DQRID : D050421.5
Start DateStart TimeEnd DateEnd Time
04/11/2005174904/11/20051920
Subject:
SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:sgpsondewnpnC1.b1
Description:
I think the operator inadvdertently entered an incorrect surface pressure value.  The 
value entered is 988.8 hPa but the value shown in the raw data file at launch is 968.8.  As a 
result, the absolute altitudes in this sounding will be slightly incorrect as will be 
the ascent rate during the first 30 seconds of flight.
Measurements:sgpsondewnpnC1.b1:
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


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DQRID : D050510.1
Start DateStart TimeEnd DateEnd Time
04/26/2005172604/26/20051910
Subject:
SGP/SONDE/C1 - Surface pressure bad and other data noisy
DataStreams:sgpsondewnpnC1.b1
Description:
I was checking this sounding because the surface pressure entered by the operator was 
considerably higher than that recorded by the TWHAPS and SMOS.  I'm not sure why, but the 
pressure data are very noisy while the sonde is on the ground (which accounts for the 
incorrect surface pressure) and the RH data aloft do not look terrible but do not look great 
either.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • surface wind speed(wspd)
  • model zonal wind velocity(u_wind)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • pressure at constant pressure surface(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • east longitude for all the input platforms.(lon)
  • Dry-Bulb Temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)


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DQRID : D050510.2
Start DateStart TimeEnd DateEnd Time
04/29/2005232904/30/20050111
Subject:
SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:sgpsondewnpnC1.b1
Description:
I think the operator inadvdertently typed an 89 instead of a 78 when entering the surface 
pressure value.  The value entered is 989.9 hPa but the value shown in the raw data file 
at launch is 978.9.  As a result, the absolute altitudes in this sounding will be 
slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements:sgpsondewnpnC1.b1:
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


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DQRID : D050520.1
Start DateStart TimeEnd DateEnd Time
05/07/2005000007/20/20052000
Subject:
SGP/SIRS/E22 - Intermittent upwelling longwave data loss
DataStreams:sgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
Description:
Upwelling longwave hemispheric data drops out occasionally during the afternoon hours.  
Maintenance determined that the Upwelling LW Hemispheric irradiance instrument, the PIR, 
had a failed cable affecting only the thermopile measurement of this instrument.  Cable was 
replaced 7/20/05 2000GMT.
Measurements:sgpsirs20sE22.a0:
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)

sgpsirsE22.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)

sgpsirsE22.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D050603.4
Start DateStart TimeEnd DateEnd Time
05/11/2005053005/11/20050750
Subject:
SGP/SONDE/C1 - Surface pressure incorrect
DataStreams:sgpsondewnpnC1.b1
Description:
I think the operator inadvdertently mistyped a digit when entering the surface pressure 
value.  The value entered is 975.6 hPa but the value shown in the raw data file at launch 
is 972.6.  As a result, the absolute altitudes in this sounding will be slightly incorrect 
as will be the ascent rate during the first 30 seconds of flight.
Measurements:sgpsondewnpnC1.b1:
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


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DQRID : D050725.1
Start DateStart TimeEnd DateEnd Time
07/17/2005234707/18/20050141
Subject:
SGP/SONDE/C1 - Bad RH Data
DataStreams:sgpsondewnpnC1.b1
Description:
The RH values below 6 km are incorrect.  The problem relates to a failure of the GC25 
ground check set used before this particular sounding.  The failure seems to have affected 
the sensor calibration with the effect that one of the two sensors was reading artificially 
high.  Because the internal processing software uses the highest of the two sensor 
readings, the bad sensor value is chosen whenever it is not heated.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D050810.3
Start DateStart TimeEnd DateEnd Time
08/04/2005220708/17/20051840
Subject:
SGP/SIRS/E20 - Downwelling Shortwave PSP Damaged by Lightning
DataStreams:sgpsirsE20.00, sgpsirsE20.b1, sgpsirs20sE20.a0
Description:
The PSP was damaged by a lightning strike on 8/04/05 (22:10 GMT).  Data from other 
radiometers are good after this event.  

The PSP, NIP and shaded 8-48 were replaced 8/17/05 and the system returned to service at 
18:40 GMT.

Downwelling Shortwave (DS) data from the unshaded PSP during this period is reported as 
0.0 W/sq m.  The DS can be computed from available Direct Normal (NIP), Downwelling Diffuse 
(DD), and the computed Solar Zenith Angle (SZA) using the following equation:

    DS = NIP * Cos(SZA) + DD

Estimated uncertainties of the computed values are actually lower than those of the 
measured DS  (+/- 3% or 4% vs. +/- 5% to 10% respectively, depending on SZA).
Measurements:sgpsirsE20.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)

sgpsirs20sE20.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)

sgpsirsE20.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D050811.5
Start DateStart TimeEnd DateEnd Time
08/01/2005113208/01/20050116
Subject:
SGP/SONDE/C1 - Bad T/RH and surface P.
DataStreams:sgpsondewnpnC1.b1
Description:
Apparently multiple failures.  The radiosonde temperature sensor broke on launch causing 
an approximate 35 degC negative offset and as a result, the RH is incorrect.  Furthermore, 
it appears that the pressure sensor was off by approximately 4 hPa, though this would 
not affect the altitude calculation, the absolute pressure is wrong.
Measurements:sgpsondewnpnC1.b1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)


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DQRID : D050912.2
Start DateStart TimeEnd DateEnd Time
09/09/2005113209/09/20051332
Subject:
SGP/SONDE/C1 - Temperature/RH incorrect
DataStreams:sgplssondeC1.c1, sgpsondewnpnC1.b1
Description:
The temperature throughout this sounding is too high and as a result the RH values will be 
incorrect as well.  I'm not sure what is wrong here but the operators noted reasonable 
values (18.1 degC, 87%) in the log before launch.  Review of the raw data, however, shows 
the sonde reporting temperatures nearly 20 degC higher.  I suppose it is possible that 
the operator entered into the log the reference temperature from the GC25 ground check set 
rather than the temperature reported by the sonde - I can't think of any other 
explanation - there is no doubt that the temperature sensor on this sonde was bad.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgplssondeC1.c1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)


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DQRID : D051027.1
Start DateStart TimeEnd DateEnd Time
10/24/2005114010/24/20051204
Subject:
SGP/SONDE/C1 - Bad RH Data
DataStreams:sgpsondewnpnC1.b1
Description:
The RH values during this sounding oscillate between reasonable values and near-zero 
values.  The oscillation is due to failure of the RH sensor heating process.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D051117.1
Start DateStart TimeEnd DateEnd Time
08/18/2005141511/23/20051706
Subject:
SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficients
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
Calibration coefficient for the downwelling diffuse measurement (8-48 B&W Eppley 
instrument) was incorrect after the instrument replacement 8/18/2005.

Affected downwelling diffuse irradiance data can be corrected:
Irr(corr) = Irr(uncorr) / 122.85 * 112.85 (or a overall multiplier of .9186)
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs20sE24.a0:
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)

sgpsirsE24.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)


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DQRID : D051121.1
Start DateStart TimeEnd DateEnd Time
04/13/2005234604/15/20051732
Subject:
SGP/SONDE/C1 - Sonde RH values incorrect
DataStreams:sgpsondewnpnC1.b1
Description:
RH values for all sondes launched during this time were incorrect due to a faulty Ground 
Check set which damaged or conditioned the RH sensor improperly.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D060208.2
Start DateStart TimeEnd DateEnd Time
02/10/2006000012/31/20062359
Subject:
SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes
DataStreams:sgpsondewnpnC1.b1
Description:
Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS 
windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 
2006.  The radiosonde type used for the each sounding may be determined by looking the 
metadata variable "launch_status" in the netCDF data files.
Measurements:sgpsondewnpnC1.b1:
  • east longitude for all the input platforms.(lon)
  • model zonal wind velocity(u_wind)
  • surface wind speed(wspd)
  • model meridional wind velocity(v_wind)
  • north latitude for all the input platforms.(lat)
  • Wind Direction(deg)
  • Wind Status(wstat)


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DQRID : D060227.2
Start DateStart TimeEnd DateEnd Time
02/22/2006000002/27/20060000
Subject:
SGP/SONDE/C1 - Soundings done as part of dual-sonde flights
DataStreams:sgpsondewnpnC1.b1
Description:
The following soundings done during the subject time period were flown in dual-sonde mode 
in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA 
ATR (atmospheric temperature reference) radiosonde.  The radiosondes were separated by a 6' 
styrofoam bar.  To accommodate the additional weight, we used 1200g balloons rather than 
350g balloons.  Accordingly, we want to alert users that these soundings may reach 
higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat 
higher.  The following soundings are affected:

Sequence  Date    UTC launch time
    1     2/22        0530
    2     2/22        1730
    3     2/22        2330 <---- No data: launch failure    
    4     2/23        0230
    5     2/23        0530
    6     2/23        1730    
    7     2/23        2030
    8     2/23        2330
    9     2/24        2330
   10     2/25        0215
   11     2/25        0509    
   12     2/25        1730
   13     2/25        1930
   14     2/25        2300
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • surface wind speed(wspd)
  • model zonal wind velocity(u_wind)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • pressure at constant pressure surface(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • east longitude for all the input platforms.(lon)
  • Dry-Bulb Temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)


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DQRID : D060316.1
Start DateStart TimeEnd DateEnd Time
02/14/2006200202/14/20062105
Subject:
DataStreams:sgp1twr10xC1.b1, sgp30twr10xC1.b1
Description:
Measurements:

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DQRID : D060403.4
Start DateStart TimeEnd DateEnd Time
08/20/2005193004/12/20062040
Subject:
SGP/SIRS/E20 - Instrument noise problem
DataStreams:sgpsirsE20.00, sgpsirsE20.b1, sgpsirs20sE20.a0
Description:
Afer recovery from lightening strike the upwelling longwave SIRS Eppley PIR (UIR) has had 
noise on both dome and case thermistor measurements.  On 4/12/2006 techs replaced 
defective j-panel at base of tower.
Measurements:sgpsirsE20.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)

sgpsirs20sE20.a0:
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)

sgpsirsE20.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D060405.1
Start DateStart TimeEnd DateEnd Time
02/16/2006170504/13/20061715
Subject:
SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficients
DataStreams:sgpsirsE24.00, sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
During the PIR coefficient change from 4/coeffs to 1/coeff, the downwelling diffuse 
hemispheric instrument (Eppley 8-48) coefficient was inadvertently changed to 122.85 and should 
have been 112.85 W/m2/mV. 

Perform the following calculation to correct the data, DD=downwelling diffuse instrument:  

  DD(new)[W/m2]=( DD(old)[W/m2]/122.85[W/m2\mV] )* 112.85[W/m2/mV]
Measurements:sgpsirsE24.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs20sE24.a0:
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)

sgpsirsE24.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)


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DQRID : D060424.1
Start DateStart TimeEnd DateEnd Time
04/07/2006120005/31/20061700
Subject:
SGP/SIRS/E21 - Roosting birds in field of view
DataStreams:sgpsirsE21.00, sgpsirsE21.b1, sgpsirs20sE21.a0
Description:
The RBDD (Rotating Bird Deterrent Device) installed at E21 to prevent turkey vultures from 
roosting on the instrument boom failed resulting in noisy NIP (Short Direct Normal) and 
PSP (Short Global Hemispheric) data and a spike occurring around 2230 UTC everyday due to 
obstruction of the field of view.

Problem is intermittant due to moving birds.  Use data with discretion.  Follow ARM 
(DQMS3) flag recommendations for QC flags 02 or 03 found in section 5.1.4 of the SIRS handbook:
http://www.arm.gov/publications/tech_reports/handbooks/sirs_handbook.pdf
Measurements:sgpsirsE21.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsirs20sE21.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)

sgpsirsE21.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)


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DQRID : D060616.2
Start DateStart TimeEnd DateEnd Time
05/31/2006175605/31/20061852
Subject:
DataStreams:sgp1twr10xC1.b1, sgp30twr10xC1.b1
Description:
Measurements:

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DQRID : D060630.1
Start DateStart TimeEnd DateEnd Time
06/17/2006000006/21/20062359
Subject:
SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files
DataStreams:sgpsondewnpnC1.b1
Description:
The wind finding hardware failed so that no wind or latitude/longitude data was collected 
on the launches for these days.
Measurements:sgpsondewnpnC1.b1:
  • east longitude for all the input platforms.(lon)
  • model zonal wind velocity(u_wind)
  • surface wind speed(wspd)
  • model meridional wind velocity(v_wind)
  • north latitude for all the input platforms.(lat)
  • Wind Status(wstat)


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DQRID : D060630.26
Start DateStart TimeEnd DateEnd Time
07/23/2003210002/15/20062030
Subject:
SGP/SIRS/E20 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE20.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.
Measurements:sgpsirsE20.b1:
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)


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DQRID : D060630.27
Start DateStart TimeEnd DateEnd Time
07/23/2003152002/15/20061515
Subject:
SGP/SIRS/E21 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE21.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.
Measurements:sgpsirsE21.b1:
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)


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DQRID : D060630.28
Start DateStart TimeEnd DateEnd Time
07/23/2003183002/15/20061741
Subject:
SGP/SIRS/E22 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE22.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.    
                                                                         
The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in August 2006.
Measurements:sgpsirsE22.b1:
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)


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DQRID : D060630.29
Start DateStart TimeEnd DateEnd Time
07/24/2003164002/16/20061705
Subject:
SGP/SIRS/E24 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE24.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in July 2004. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in October 2006.
Measurements:sgpsirsE24.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D060630.30
Start DateStart TimeEnd DateEnd Time
05/16/2003000202/15/20061750
Subject:
SGP/SIRS/E27 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsE27.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in May 2003. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in October 2006.
Measurements:sgpsirsE27.b1:
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)


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DQRID : D060928.2
Start DateStart TimeEnd DateEnd Time
08/27/2006233209/25/20061600
Subject:
SGP/SONDE/C1 - RH values offset due to error in ground check
DataStreams:sgpsondewnpnC1.b1
Description:
Background: After installation of the latest software update , we began performing formal 
ground checks on RS92 radiosondes.  By comparing the
radiosonde readings with reference values in a controlled environment, the
ground check is intended to ensure that the radiosonde sensors are in
calibration before launch.  The radisonde values during the ground check
process are recorded automatically; the reference values are entered by the
operator.  If the radiosonde readings vary from the reference values, the
system 'corrects' the radiosonde values.  In the case of RH, the correction
is applied as an offset (true RH = indicated RH + correction).

Problem: Some operators misunderstood the ground-check procedure and entered the 
radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done 
during this period have RH values that are different from what they would be if the 
ground check procedure had been done correctly.

Consequence:  Because the RH corrections generally are small (averaging
about 0.5% RH) and the precision of the reported RH data during this time
period is 1% RH, some values will not be affected at all; others will be off by about 1% 
RH (still within the stated accuracy of the sensor). 
Furthermore, because entering the radiosonde value as the reference value
results in a near zero 'correction,' one may view these soundings as being
done without the ground check correction.  Also note that the dew point
value will be suspect as well.

I am attaching below a listing of the soundings that were affected during the indicated 
time period.  Users can see the magnitude of the problem and choose whether or not to apply 
an offset in RH.  Note that application of the offset to the processed RH data (in the 
netCDF file) will not have the same effect of applying the correction to the absolutely 
raw data (before processing), but the differences should be insignificant.  Also note that 
the corrections for each sounding are included in the netCDF header information.  These 
attributes are named 'humidity_correction' and 'humidity_correction_2'.  The values of RH 
indicated by the radiosonde while it is in the ground check set are in attributes 
'humidity_gc_sonde' and 'humidity_gc_sonde_2.'  There is an RH reading for each of the two RH 
sensors used in the RS92 radiosonde.

Here is the list - RH1 and RH2 are the radiosonde readings in the ground
check set.  Ref is the reference value entered by the operator.  The
correcte reference value should be 0%.  To obtain an approximation to the RH value that 
would have been recorded if the ground check had been done
properly, subtract the Ref value from the indicated RH.

 YYYYMMDD  HHMM  SerialN      RH1     RH2     Ref
 20060827  2332  B2624322    1.00    1.00    1.00
 20060828  1731  B2634078    1.00    1.00    1.00
 20060828  2332  B2624380    3.00    3.00    2.00
 20060909  2331  B2615266    1.00    1.00    1.00
 20060915  1759  B2914012    1.00    1.00    1.00
 20060919  2350  B2825128    1.00    1.00    1.00
 20060920  1800  B2825088    1.00    1.00    1.00
 20060920  2346  B2815633    1.00    1.00    1.00
 20060921  1728  B2834732    1.30    1.30    1.30
 20060921  2330  B2825042    1.50    1.50    1.50
 20060922  0527  B2825043    1.70    1.80    1.70
 20060922  1128  B2825031    1.60    1.50    1.60
 20060922  1729  B2834437    1.50    1.50    1.50
 20060922  2330  B2825040    0.40    0.50    0.50
 20060923  0529  B2834733    0.30    0.30    0.30
 20060923  1128  B2825026    0.40    0.40    0.40
 20060923  1729  B2825064    0.60    0.70    0.60
 20060923  2330  B2825041    0.40    0.50    0.50
 20060924  0529  B2825039    0.30    0.30    0.30
 20060924  1729  B2825025    0.20    0.30    0.20
 20060924  2329  B2825032    0.30    0.40    0.40
 20060925  0529  B2824234    0.20    0.30    0.20
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D060928.3
Start DateStart TimeEnd DateEnd Time
09/28/2006172812/31/99992359
Subject:
SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:sgpsondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)
  • altitude above sea levelaltunits(alt)


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DQRID : D061105.2
Start DateStart TimeEnd DateEnd Time
10/11/2006144610/11/20062039
Subject:
DataStreams:sgp1twr10xC1.b1, sgp30twr10xC1.b1
Description:
Measurements:

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DQRID : D061201.1
Start DateStart TimeEnd DateEnd Time
11/27/2006233111/28/20060056
Subject:
SGP/SONDE/C1 - RH Sensor failure
DataStreams:sgpsondewnpnC1.b1
Description:
The differences between the two RH sensors on this sonde are unreasonably high (~20%).  As 
a result the reported RH values oscillate by this amount during the times the sensors 
are alternately heated.  After the heating stops, the reported RH comes from the sensor 
reading the higher value.  There is no way of knowing if this is the correct value.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D061205.2
Start DateStart TimeEnd DateEnd Time
11/29/2006060012/05/20061830
Subject:
SGP/SIRS/E24 - Spikes in data
DataStreams:sgpsirsE24.b1, sgpsirs20sE24.a0
Description:
The down_short_hemisp, down_long_hemisp, and upwelling_longwave showed large spikes (an 
order of magnitude) in data.  Problem corrected itself on 12/5 before the site visit on 
12/7.  It is not known why the problem did not return but instruments affected were on the 
multiplexer.  Maintenance reports it was not replaced.
Measurements:sgpsirs20sE24.a0:
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile
    Voltage(inst_up_short_hemisp)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)

sgpsirsE24.b1:
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D070320.1
Start DateStart TimeEnd DateEnd Time
07/06/2006172204/12/20071810
Subject:
SGP/SIRS/E22 - Reprocess: Incorrect calibration coefficients
DataStreams:sgpsirsE22.00, sgpsirsE22.b1, sgpsirs20sE22.a0
Description:
NIP (short_direct_normal) 29541E6 had an incorrect calibration coefficient in the logger 
program. 128.97 should have been 126.67 [W/m2/mV].
Measurements:sgpsirs20sE22.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)

sgpsirsE22.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)

sgpsirsE22.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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END OF DATA