Data Quality Reports for Session: 138588 User: bouniol Completed: 11/06/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D061214.1TWP/SKYRAD/C3 - NIP instrument failuretwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
D071001.4TWP/GNDRAD/C3 - Maintenance activities affected GNDRADtwpgndrad20sC3.a0, twpgndrad60sC3.b1
D080121.2TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylonetwpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1
D080414.1TWP/SKYRAD/C3 - IRT power supplytwpskyrad60sC3.b1
D080904.6TWP/SKYRAD/C3 - Contaminationtwpskyrad60sC3.b1
D081222.2TWP/SKYRAD/C3 - Direct normal instrument failuretwpskyrad20sC3.a0, twpskyrad60sC3.b1


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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DQRID : D071001.4
Start DateStart TimeEnd DateEnd Time
09/17/2007233009/18/20070722
09/18/2007232009/19/20070150
09/19/2007233309/20/20070055
Subject:
TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD
DataStreams:twpgndrad20sC3.a0, twpgndrad60sC3.b1
Description:
While maintenance was performed on the SMET anenometer, the GNDRAD instruments were 
inverted. Disregard GNDRAD data during this time.
Measurements:twpgndrad20sC3.a0:
  • inst_up_long_dome_resist
  • inst_sfc_ir_signal
  • inst_up_short_hemisp
  • lat
  • lon
  • base_time
  • time
  • alt
  • inst_up_long_hemisp_tp
  • inst_up_long_case_resist
  • time_offset
twpgndrad60sC3.b1:
  • net_min
  • net_std
  • up_long_hemisp_std
  • time_offset
  • external_voltage
  • lat
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • lon
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • logger_temp
  • base_time
  • net
  • sfc_ir_temp_std
  • net_max
  • alt
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • up_short_hemisp_std
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • bit_data
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • internal_voltage
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

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DQRID : D080121.2
Start DateStart TimeEnd DateEnd Time
01/03/2008100001/07/20080515
Subject:
TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone
DataStreams:twpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1
Description:
On Jan 3rd approximately 1000GMT the effects of a tropical cyclone started affecting the 
installed radiometer measurements at ARM/TWP/C3(Darwin) - both Skyrad and Gndrad.  On Jan 
4th 0740 GMT the Gndrad station was shutdown to avoid damage due to the close passing of 
this storm.  Station was restarted Jan 7th 0515GMT.
Measurements:twpgndrad20sC3.a1:
  • time_offset
  • alt
  • lat
  • inst_up_long_case_resist
  • inst_up_long_hemisp_tp
  • lon
  • base_time
  • inst_up_long_dome_resist
twpgndrad20sC3.a0:
  • inst_sfc_ir_signal
  • inst_up_short_hemisp
  • lat
  • lon
  • base_time
  • time
  • alt
  • inst_up_long_hemisp_tp
  • time_offset
twpgndrad60sC3.b1:
  • up_long_hemisp_std
  • time_offset
  • lat
  • Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
  • lon
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • logger_temp
  • base_time
  • sfc_ir_temp_std
  • alt
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
  • up_short_hemisp_std
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
  • Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
  • Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
twpgndradC3.00:
  • Raw data stream - documentation not supported

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DQRID : D080414.1
Start DateStart TimeEnd DateEnd Time
04/11/2008190104/14/20082205
Subject:
TWP/SKYRAD/C3 - IRT power supply
DataStreams:twpskyrad60sC3.b1
Description:
The 12-to-24V DC converter the provides power to the IRT had shut down and was restarted 
by power-cycling.
Measurements:twpskyrad60sC3.b1:
  • sky_ir_temp_min
  • sky_ir_temp_max
  • IR Brightness Temperature(sky_ir_temp)
  • sky_ir_temp_std

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DQRID : D080904.6
Start DateStart TimeEnd DateEnd Time
06/08/2008000009/05/20080053
Subject:
TWP/SKYRAD/C3 - Contamination
DataStreams:twpskyrad60sC3.b1
Description:
The IRT exhibited a positive bias compared to AERI. The problem was corrected when the 
lens and mirror were cleaned.
Measurements:twpskyrad60sC3.b1:
  • sky_ir_temp_min
  • sky_ir_temp_max
  • IR Brightness Temperature(sky_ir_temp)
  • sky_ir_temp_std

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DQRID : D081222.2
Start DateStart TimeEnd DateEnd Time
12/14/2008045712/30/20080040
Subject:
TWP/SKYRAD/C3 - Direct normal instrument failure
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
The NIP instrument (short_direct_normal data stream) failed giving bad data during this 
time period.  The failure start time coincides with a reported DC power failure but no 
connection between the reported power failure and the failure of this instrument could be 
determined. 

Ops also reported the tracker clock running 2.9 minutes slow during maintenance on 12/22 
0300GMT (see CS-2008-0714).  Again, the slow clock is not suspect and did not appear to 
affect alignment.

Ops replaced the NIP instrument on 12/30 and short_direct_normal data resumed normal 
operation.

Disregard the short_direct_normal (NIP) data during this time period or calculate using 
the global and diffuse instruments and the following relationship:
short_direct_normal = ((down_short_hemisp - down_short_diffuse_hemisp))/cos(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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