Data Quality Reports for Session: 138538 User: bouniol Completed: 11/03/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060110.3TWP/SKYRAD/C3 - IRT damagedtwpskyrad20sC3.a0, twpskyrad60sC3.b1
D060111.1TWP/GNDRAD/C3 - IRT powertwpgndrad60sC3.b1
D060217.1TWP/SKYRAD/C3 - Tracker stoppedtwpskyrad60sC3.b1
D060223.7TWP/SKYRAD/C3 - Solar Tracker locking at solar noontwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1
D060509.1TWP/GNDRAD/C3 - IRT failedtwpgndrad60sC3.b1
D060823.1TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D061120.1TWP/SKYRAD/C3 - NIP Failuretwpskyrad20sC3.a0, twpskyrad60sC3.b1
D061214.1TWP/SKYRAD/C3 - NIP instrument failuretwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1


DQRID : D060110.3
Start DateStart TimeEnd DateEnd Time
11/13/2005231403/07/20060257
Subject:
TWP/SKYRAD/C3 - IRT damaged
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
The analog output of the IRT was damaged by a lightning strike. The problem was corrected 
by replacing the instrument with a spare. The damaged IRT was returned to the vendor for 
repair.
Measurements:twpskyrad60sC3.b1:
  • sky_ir_temp_min
  • IR Brightness Temperature(sky_ir_temp)
  • sky_ir_temp_std
twpskyrad20sC3.a0:
  • inst_sky_ir_signal

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DQRID : D060111.1
Start DateStart TimeEnd DateEnd Time
12/20/2005233001/02/20062300
Subject:
TWP/GNDRAD/C3 - IRT power
DataStreams:twpgndrad60sC3.b1
Description:
The IRT failed to report after a planned power outage to add lightning protection modules 
to the AC power wiring. The problem was corrected when a loose power connection to the 
logger was found, rectified, and power restored to the logger.
Measurements:twpgndrad60sC3.b1:
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • sfc_ir_temp_std
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D060217.1
Start DateStart TimeEnd DateEnd Time
02/16/2006033002/16/20060505
Subject:
TWP/SKYRAD/C3 - Tracker stopped
DataStreams:twpskyrad60sC3.b1
Description:
Solar Tracker stopped and had to be repowered
Measurements:twpskyrad60sC3.b1:
  • down_long_hemisp_shaded2_max
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1)
  • Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • down_short_diffuse_hemisp_std
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • down_long_hemisp_shaded2_std
  • down_long_hemisp_shaded2_min
  • short_direct_normal_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • down_long_hemisp_shaded1_max
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • down_long_hemisp_shaded1_std
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • down_long_hemisp_unshaded_std
  • down_long_hemisp_shaded1_min
  • down_long_hemisp_shaded_std

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DQRID : D060223.7
Start DateStart TimeEnd DateEnd Time
02/17/2006000003/10/20060411
Subject:
TWP/SKYRAD/C3 - Solar Tracker locking at solar noon
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1
Description:
The Scitech solar tracker from SGP that was installed on 2005-12-01 after the previous 
tracker was damaged by lightning on 2005-11-14 has been hanging up every day at solar noon.  
In Feb, the sun moved from south to north and the Scitech tracker does not seem to be 
able to deal with this. During this period the operators power cycled the tracker between 
05:00Z and 10:00Z almost every day and data from around solar noon (03:30Z) until the 
power cycle are unusable for the measurements that use the tracker (NIP, B&W Diffuse, and 
shaded PIRs).
The problem was corrected when the Scitech tracker was replaced by a Brusag
tracker on 2006-03-10.
Measurements:twpskyrad60sC3.b1:
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • down_long_hemisp_shaded2_max
  • Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Ventilated Pyrgeometer(down_long_hemisp_shaded)
  • Irradiance, longwave, downwelling, hemispheric, shaded pyrgeometer2(down_long_hemisp_shaded2)
  • Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • down_short_diffuse_hemisp_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
  • down_long_hemisp_shaded2_std
  • down_long_hemisp_shaded2_min
  • short_direct_normal_std
  • Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
  • down_short_hemisp_std
  • down_long_hemisp_shaded1_min
  • Downwelling Longwave Hemispheric Irrad., Shaded Ventilated Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
  • down_long_hemisp_shaded1_max
  • Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • down_long_hemisp_shaded1_std
  • down_long_hemisp_shaded_std
twpskyrad20sC3.a1:
  • inst_down_long_shaded1_case_resist
  • inst_down_long_shaded_case_resist
  • inst_down_long_shaded1_dome_resist
  • inst_down_long_shaded2_case_resist
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded_tp)
  • inst_down_long_shaded2_dome_resist
  • inst_down_long_shaded_dome_resist
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp)
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_shaded2_tp)
twpskyrad20sC3.a0:
  • inst_down_long_shaded1_case_resist
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer2)(inst_down_long_hemisp_shaded2_tp)
  • inst_down_long_shaded2_dome_resist
  • inst_down_long_shaded2_case_resist
  • Irradiance, longwave, downwelling, hemispheric, thermopile (Shaded Pyrgeometer1)(inst_down_long_hemisp_shaded1_tp)
  • inst_down_long_shaded1_dome_resist
twpskyradC3.00:
  • Raw data stream - documentation not supported

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DQRID : D060509.1
Start DateStart TimeEnd DateEnd Time
04/07/2006000005/18/20062359
Subject:
TWP/GNDRAD/C3 - IRT failed
DataStreams:twpgndrad60sC3.b1
Description:
The IRT began to fail on 4/7/2006 and failed completely (apparently due to the internal 
power supply) on 4/27. It was replaced on 5/18.
Measurements:twpgndrad60sC3.b1:
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • sfc_ir_temp_std
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D060823.1
Start DateStart TimeEnd DateEnd Time
05/19/2006000006/27/20060344
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT reported higher surface temperatures than the PIR due to corrosion on the 
terminals of the lightning protection module and a ground wire error. The corrosion was cleaned 
and the wiring corrected.
Measurements:twpgndrad60sC3.b1:
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • sfc_ir_temp_std
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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DQRID : D061120.1
Start DateStart TimeEnd DateEnd Time
11/16/2006200611/20/20060630
Subject:
TWP/SKYRAD/C3 - NIP Failure
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
Skyrad normal incident shortwave irradiance (NIP) started reporting impossible values for 
direct normal irradiance starting 16 November approx 2100GMT corresponding to a rain 
event at the same time.

The NIP was replaced fixing the problem.

Direct normal data are not recoverable.  However, the NIP data can be calculated from the 
global hemsipherical shortwave and global hemispherical diffuse datastreams by using the 
following relationship:
Global Horizontal = Direct Normal x cos(Z) + Diffuse Horizontal 
where Z is the zenith angle.
Measurements:twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • short_direct_normal_std
twpskyrad20sC3.a0:
  • inst_direct_normal

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DQRID : D061214.1
Start DateStart TimeEnd DateEnd Time
12/13/2006034201/16/20070440
Subject:
TWP/SKYRAD/C3 - NIP instrument failure
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
The NIP (Short Direct Normal) was replaced after it displayed symptoms of failure 
associated with either unknown precipitation related issues or a possible lightning strike.

NIP data are not recoverable.  Direct normal data can be reconstructed from global 
hemispheric and global diffuse data using the following relationship:
   global hemispheric = direct*cos(sza) + diffuse hemispheric
Measurements:twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • short_direct_normal_std
twpskyrad20sC3.a0:
  • inst_direct_normal
twpskyradC3.00:
  • Raw data stream - documentation not supported

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