DQRs for Session: 111423 User:sloehrerCompleted: 04-04-2008

Data Quality Reports for Session: 111423 User: sloehrer Completed: 04/04/2008

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D040416.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D050504.2	TWP/GNDRAD/C2 - IRT connector	twpgndrad60sC2.b1
D050919.4	TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement	twpgndrad60sC3.b1
D051206.5	TWP/GNDRAD/C3 - IRT malfunction	twpgndrad60sC3.b1
D060111.1	TWP/GNDRAD/C3 - IRT power	twpgndrad60sC3.b1
D060509.1	TWP/GNDRAD/C3 - IRT failed	twpgndrad60sC3.b1
D060630.34	TWP/GNDRAD/C1 - Reprocess: Longwave Calibration error	twpgndrad60sC1.b1
D060630.35	TWP/GNDRAD/C2 - Reprocess: Longwave Calibration error	twpgndrad60sC2.b1
D060630.36	TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error	twpgndrad60sC3.b1
D060823.1	TWP/GNDRAD/C3 - IRT bias	twpgndrad60sC3.b1
D070110.1	TWP/GNDRAD/C2 - IRT signal	twpgndrad60sC2.b1
D070406.6	TWP/GNDRAD/C2 - Reprocess: IRT calibration	twpgndrad60sC2.b1
D071204.1	TWP/GNDRAD/C2 - Reprocessed: Incorrect calibration	twpgndrad20sC2.a0, twpgndrad60sC2.b1

DQRID : D040416.1

Start Date	Start Time	End Date	End Time
04/07/2004	0230	04/08/2004	1200
04/12/2004	0600	04/27/2004	1400
05/08/2004	0300	05/15/2004	2200
05/27/2004	1100	06/09/2004	0000
12/29/2004	1100	01/06/2005	2300

Subject:	TWP/GNDRAD/C3 - IRT bias
DataStreams:	twpgndrad60sC3.b1
Description:	The IRT behaved erratically, jumping frequently from reporting about 50 Wm^(-2) higher than the PIR for surface irradiance values to about 100Wm^(-2) lower than the PIR. Generally, the IRT measured lower surface temperatures than expected from the PIR.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D050504.2

Start Date	Start Time	End Date	End Time
03/27/2005	2330	04/03/2005	0240

Subject:	TWP/GNDRAD/C2 - IRT connector
DataStreams:	twpgndrad60sC2.b1
Description:	The IRT had a problem with the connector of either the signal or power cable which produced an output of 0 volts equivalent to a measurement of 223K. The problem was corrected when the connectors were cleaned and tightened.
Measurements:	twpgndrad60sC2.b1: Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Effective Surface (Skin) Temperature(sfc_ir_temp)

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DQRID : D050919.4

Start Date	Start Time	End Date	End Time
08/05/2005	0030	08/05/2005	0200
08/09/2005	0000	08/09/2005	0200

Subject:	TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement
DataStreams:	twpgndrad60sC3.b1
Description:	The tower at Darwin was brought down to test and replace the Gndrad PIR on 8/5/2005 and the PSP on 8/9/2005
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) 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 Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard Deviation(up_long_hemisp_std) Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D051206.5

Start Date	Start Time	End Date	End Time
11/21/2005	1500	12/05/2005	0100

Subject:	TWP/GNDRAD/C3 - IRT malfunction
DataStreams:	twpgndrad60sC3.b1
Description:	The internal IRT power supply failed (probably due to a lightning strike on 11/14) and was drawing excessive current on the data logger's DC system. The problem was corrected by replacing the instrument with a spare.
Measurements:	twpgndrad60sC3.b1: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D060111.1

Start Date	Start Time	End Date	End Time
12/20/2005	2330	01/02/2006	2300

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: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D060509.1

Start Date	Start Time	End Date	End Time
04/07/2006	0000	05/18/2006	2359

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: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D060630.34

Start Date	Start Time	End Date	End Time
08/02/2004	0700	12/21/2005	2204

Subject:	TWP/GNDRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC1.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 are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields.
Measurements:	twpgndrad60sC1.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

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DQRID : D060630.35

Start Date	Start Time	End Date	End Time
07/05/2004	2202	12/21/2005	2149

Subject:	TWP/GNDRAD/C2 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC2.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 are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields.
Measurements:	twpgndrad60sC2.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

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DQRID : D060630.36

Start Date	Start Time	End Date	End Time
05/20/2004	0100	12/21/2005	2137

Subject:	TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:	twpgndrad60sC3.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 are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields.
Measurements:	twpgndrad60sC3.b1: Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

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DQRID : D060823.1

Start Date	Start Time	End Date	End Time
05/19/2006	0000	06/27/2006	0344

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: Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Effective Surface (Skin) Temperature(sfc_ir_temp) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)

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DQRID : D070110.1

Start Date	Start Time	End Date	End Time
12/03/2006	0400	02/04/2007	2316

Subject:	TWP/GNDRAD/C2 - IRT signal
DataStreams:	twpgndrad60sC2.b1
Description:	When the other GNDRAD radiometers were replaced on 12/3/2006, the quality of the IRT signal began to degrade until 12/26 when it became unusable. The instrument was replaced on 2/4/2007.
Measurements:	twpgndrad60sC2.b1: Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Effective Surface (Skin) Temperature(sfc_ir_temp)

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DQRID : D070406.6

Start Date	Start Time	End Date	End Time
02/04/2007	2317	02/17/2007	0400

Subject:	TWP/GNDRAD/C2 - Reprocess: IRT calibration
DataStreams:	twpgndrad60sC2.b1
Description:	The configuration of the IRT was set to that used at TWP/C3. This caused the calibration of the data to be wrong. It was corrected by reconfiguring the IRT to match the datalogger program. These data can be reprocessed and corrected by adding 10K, i.e. sfc_ir_temp(new) = sfc_ir_temp(old) + 10K.
Measurements:	twpgndrad60sC2.b1: Surface Infra-Red Temperature Minima(sfc_ir_temp_min) Surface Infra-Red Temperature Maxima(sfc_ir_temp_max) Effective Surface (Skin) Temperature(sfc_ir_temp)

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DQRID : D071204.1

Start Date	Start Time	End Date	End Time
11/25/2007	2202	11/30/2007	1724

Subject:	TWP/GNDRAD/C2 - Reprocessed: Incorrect calibration
DataStreams:	twpgndrad20sC2.a0, twpgndrad60sC2.b1
Description:	The Gndrad PSP was changed out 11/25 but the datalogger program was not updated until 11/30. PSP #31293 installed 20071125.2202. Correct calibration coefficient = 123.46. Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by: US(new) = (US(old) / 123.56 ) * 123.46 Reprocessing completed March 2008.
Measurements:	twpgndrad60sC2.b1: Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(up_short_hemisp_std) Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min) twpgndrad20sC2.a0: Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)

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