Data Quality Reports for Session: 103593 User: borr Completed: 01/09/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050614.1SGP/VCEIL/C1 - poor signalsgpvceil25kC1.b1
D050810.2SGP/NIMFR/E13 - Instrument failuresgpnimfrE13.00, sgpnimfrE13.a0, sgpnimfrE13.b1
D051101.5SGP/SURTHREF/C1 - Temperature and RH probe failuresgpsurthrefC1.b1
D060630.8SGP/SIRS/C1 - Reprocessed: Longwave Calibration errorsgpsirsC1.b1
D060906.3SGP/NIMFR/E13 - Missing datasgpnimfrE13.a0, sgpnimfrE13.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1


DQRID : D050614.1
Start DateStart TimeEnd DateEnd Time
05/05/2005184204/19/20061713
Subject:
SGP/VCEIL/C1 - poor signal
DataStreams:sgpvceil25kC1.b1
Description:
When parameters were changed (set noise_h2_compensation to "ON" and units to "METERS") to 
correct a low amplitude problem, the backscatter plots began displaying horizontal 
stripes indicating detector "ringing". However, the cloud base heights are not affected. The 
problem was corrected when the instrument was replaced.
Measurements:sgpvceil25kC1.b1:
  • Detection status. See details(detection_status)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)

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DQRID : D050810.2
Start DateStart TimeEnd DateEnd Time
08/02/2005180009/23/20051900
Subject:
SGP/NIMFR/E13 - Instrument failure
DataStreams:sgpnimfrE13.00, sgpnimfrE13.a0, sgpnimfrE13.b1
Description:
Head temp values frequently dropped to 0, -50, or -100 degrees Celsius.  Often this causes 
the filters to drop to values of zero (or act erratic) as well.

On 9/23 the instrument was pulled from service and the mentor found significant damage to 
the instrument due to overheating.  Instrument will be rebuilt.
Measurements:sgpnimfrE13.b1:
  • Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • NIMFR Tube Temperature(tube_temp)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • east longitude for all the input platforms.(lon)
  • Direct Normal Narrowband Irradiance, Filter 3(direct_norm_narrowband_filter3)
  • Direct Normal Narrowband Irradiance, Filter 2(direct_norm_narrowband_filter2)
  • Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Data Logger Supply Voltage(logger_volt)
  • altitude above sea levelaltunits(alt)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • Direct Normal Narrowband Irradiance, Filter 1(direct_norm_narrowband_filter1)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Direct Normal Narrowband Irradiance, Filter 4(direct_norm_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
  • Detector Temperature(head_temp)
  • Time offset from base_time(base_time)
sgpnimfrE13.a0:
  • Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
  • Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
  • Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)
  • Direct Normal Narrowband Irradiance, Filter 4(direct_norm_narrowband_filter4)
  • Detector Temperature(head_temp)
  • NIMFR Tube Temperature(tube_temp)
  • east longitude for all the input platforms.(lon)
  • Time offset from base_time(base_time)
  • Direct Normal Narrowband Irradiance, Filter 1(direct_norm_narrowband_filter1)
  • Data Logger Supply Voltage(logger_volt)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Time offset of tweaks from base_time(time_offset)
  • Direct Normal Narrowband Irradiance, Filter 2(direct_norm_narrowband_filter2)
  • north latitude for all the input platforms.(lat)
  • Direct Normal Narrowband Irradiance, Filter 3(direct_norm_narrowband_filter3)
  • altitude above sea levelaltunits(alt)
sgpnimfrE13.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D051101.5
Start DateStart TimeEnd DateEnd Time
08/20/2005212710/18/20052038
Subject:
SGP/SURTHREF/C1 - Temperature and RH probe failure
DataStreams:sgpsurthrefC1.b1
Description:
Temperature and RH probe V1 were failing intermittently.
Measurements:sgpsurthrefC1.b1:
  • Vaisala probe 1 RH standard deviation(RH_V1_std)
  • Vaisala probe 1 temperature standard deviation(temp_V1_std)
  • Vaisala probe 1 temperature maximum(temp_V1_max)
  • Vaisala probe 1 temperature minimum(temp_V1_min)
  • Vaisala probe 1 RH minimum(RH_V1_min)
  • Vaisala probe 1 average temperature(temp_V1_avg)
  • Vaisala probe 1 average RH(RH_V1_avg)
  • Vaisala probe 1 RH maximum(RH_V1_max)

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DQRID : D060630.8
Start DateStart TimeEnd DateEnd Time
12/11/2003195002/16/20061901
Subject:
SGP/SIRS/C1 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsC1.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 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:sgpsirsC1.b1:
  • 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(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060906.3
Start DateStart TimeEnd DateEnd Time
09/23/2005190501/25/20062201
Subject:
SGP/NIMFR/E13 - Missing data
DataStreams:sgpnimfrE13.a0, sgpnimfrE13.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpnimfrE13.b1:
  • Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • NIMFR Tube Temperature(tube_temp)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • east longitude for all the input platforms.(lon)
  • Direct Normal Narrowband Irradiance, Filter 3(direct_norm_narrowband_filter3)
  • Direct Normal Narrowband Irradiance, Filter 2(direct_norm_narrowband_filter2)
  • Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Data Logger Supply Voltage(logger_volt)
  • altitude above sea levelaltunits(alt)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • Direct Normal Narrowband Irradiance, Filter 1(direct_norm_narrowband_filter1)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Direct Normal Narrowband Irradiance, Filter 4(direct_norm_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
  • Detector Temperature(head_temp)
  • Time offset from base_time(base_time)
sgpnimfrE13.a0:
  • Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
  • Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
  • Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)
  • Direct Normal Narrowband Irradiance, Filter 4(direct_norm_narrowband_filter4)
  • Detector Temperature(head_temp)
  • NIMFR Tube Temperature(tube_temp)
  • east longitude for all the input platforms.(lon)
  • Time offset from base_time(base_time)
  • Direct Normal Narrowband Irradiance, Filter 1(direct_norm_narrowband_filter1)
  • Data Logger Supply Voltage(logger_volt)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Time offset of tweaks from base_time(time_offset)
  • Direct Normal Narrowband Irradiance, Filter 2(direct_norm_narrowband_filter2)
  • north latitude for all the input platforms.(lat)
  • Direct Normal Narrowband Irradiance, Filter 3(direct_norm_narrowband_filter3)
  • altitude above sea levelaltunits(alt)

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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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