Data Quality Reports for Session: 103663 User: wlchapma Completed: 01/16/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D021211.10NSA/GNDRAD/C1 - Unreasonable/missing PIR data due to maintenancensagndrad60sC1.a1
D021211.11NSA/GNDRAD/C1 - Noisy PIR Datansagndrad60sC1.a1
D021211.12NSA/GNDRAD/C1 - Noisy PIR Datansagndrad60sC1.a1, nsagndrad60sC1.b1
D021211.13NSA/GNDRAD/C1 - PIR1 Calibration problems resulted in small errornsagndrad60sC1.a1
D021211.2NSA/GNDRAD/C1 - IRT instrument maintenancensagndrad60sC1.a1, nsagndrad60sC1.b1
D021211.6NSA/GNDRAD/C1 - IRT data noisynsagndrad60sC1.a1, nsagndrad60sC1.b1
D021211.8NSA/GNDRAD/C1 - PIR offlinensagndrad60sC1.a1
D021211.9NSA/GNDRAD/C1 - Instrument maintenancensagndrad60sC1.a1
D021212.1NSA/GNDRAD/C1 - Instrument Maintenancensagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.10NSA/GNDRAD/C1 - Unreasonable PSP Datansagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.2NSA/GNDRAD/C1 - PSP erroneously replaced by B&Wnsagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.3NSA/GNDRAD/C1 - Instrument maintenancensagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.4NSA/GNDRAD/C1 - Bad calibrations appliednsagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.5NSA/GNDRAD/C1 - Bad PSP calibrations appliednsagndrad60sC1.a1
D021212.6NSA/GNDRAD/C1 - Unexplained decrease in PSP and NET data valuesnsagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.7NSA/GNDRAD/C1 - Data corrupted by brief spikensagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.8NSA/GNDRAD/C1 - Rad instruments shaded by shelternsagndrad60sC1.a1, nsagndrad60sC1.b1
D021212.9NSA/GNDRAD/C1 - PSP Data corrupted by brief spikensagndrad60sC1.a1, nsagndrad60sC1.b1
D030301.1NSA/GNDRAD/C1 - No power to IRTnsagndrad60sC1.a1, nsagndrad60sC1.b1
D031216.1NSA/GNDRAD/C1 - IRT cable failurensagndrad60sC1.b1
D031216.2NSA/GNDRAD/C1 - IRT returned to vendornsagndrad60sC1.b1
D040919.1NSA/GNDRAD/C1 - IRT power failurensagndrad60sC1.b1
D041013.3NSA/GNDRAD/C1 - Frosting/CondensationnsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1
D050825.3NSA/GNDRAD/C1 - Power Disconnected Brieflynsagndrad60sC1.b1
D060209.4NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensorsnsagndradC1.00, nsagndrad20sC1.a0, nsagndrad60sC1.b1
D060630.39NSA/GNDRAD/C1 - Reprocess: Longwave Calibration errornsagndrad60sC1.b1
D060824.1NSA/GNDRAD/C1 - Incorrect calibration coefficientsnsagndradC1.00, nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1
D990924.1NSA/GNDRAD/C1 - IRT insufficiently heatednsagndrad60sC1.a1


DQRID : D021211.10
Start DateStart TimeEnd DateEnd Time
01/19/1999183001/20/19992359
Subject:
NSA/GNDRAD/C1 - Unreasonable/missing PIR data due to maintenance
DataStreams:nsagndrad60sC1.a1
Description:
During this period, there are data gaps and the data that were
collected are unreasonable.  Instrument maintenance was being
performed
Measurements:nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • NET mean(net_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded minimum(pir1_min)
  • Net Radiation(net)
  • NET standard deviation(net_sd)
  • Net Radiation, Standard Deviation(net_std)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021211.11
Start DateStart TimeEnd DateEnd Time
09/01/1998000002/28/19992359
Subject:
NSA/GNDRAD/C1 - Noisy PIR Data
DataStreams:nsagndrad60sC1.a1
Description:
During the period referenced, the ground PIR was noisy in comparison to the sky PIR data.  
At the end of November, the noise increased to roughly 10 W/m2 from peak to peak.  After 
12/23/98, the noise decreased in amplitude but still had noisy patterns.  

On 01/17-18/99, there was an increase again in the noise level (4 GMT 01/17 - 5 GMT 
01/18). During this period the gndrad IRT data also exhibited noise patterns (the IRT was not 
operational).

In February, the instrument exhibited large noise variations again.  On 02/16, a wiring 
problem was corrected and the noise dropped back to 1-5 W/m2.  However, the noise levels 
began to increase again.
Measurements:nsagndrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded minimum(pir1_min)


Back To Table of Contents

DQRID : D021211.12
Start DateStart TimeEnd DateEnd Time
03/01/1999000012/31/20002359
Subject:
NSA/GNDRAD/C1 - Noisy PIR Data
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
During the period referenced, the ground PIR was noisy in  
              comparison to the the sky PIR data.  (Note U021211.1 documents
              same problem for 9/1/98-2/28/99)

              The noise problem continued after the GNDRAD data logger was 
              replaced in late September. Particularly strong examples of the 
              noise can be seen in data from 11/10 - 11/19/99. The peak to 
              peak noise reaches 12 W/m2.
Measurements:nsagndrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)

nsagndrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded minimum(pir1_min)


Back To Table of Contents

DQRID : D021211.13
Start DateStart TimeEnd DateEnd Time
12/08/1998205112/15/19981200
Subject:
NSA/GNDRAD/C1 - PIR1 Calibration problems resulted in small error
DataStreams:nsagndrad60sC1.a1
Description:
The dome correction coefficients were not properly reset in calibration file until the 
early morning of 12/15. These errors probably account for less than 4% in error.
Measurements:nsagndrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded minimum(pir1_min)


Back To Table of Contents

DQRID : D021211.2
Start DateStart TimeEnd DateEnd Time
09/15/1999172009/15/19992000
Subject:
NSA/GNDRAD/C1 - IRT instrument maintenance
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
IRT offline while instrument cable was being rebuilt.  Data are bad.
Measurements:nsagndrad60sC1.b1:
  • IRT1 minimum(irt1_min)
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 mean(irt1_mean)

nsagndrad60sC1.a1:
  • IRT1 standard deviation(irt1_sd)
  • IRT1 mean(irt1_mean)
  • IRT1 maximum(irt1_max)
  • IRT1 minimum(irt1_min)


Back To Table of Contents

DQRID : D021211.6
Start DateStart TimeEnd DateEnd Time
12/10/1999000012/29/20001859
Subject:
NSA/GNDRAD/C1 - IRT data noisy
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
After re-installation of the IRT on 12/10/99, the data are noisy. Source of the noise is 
believed to be the heater connected directly to the IRT.  Instrument was taken offline on 
12/30/1999 and shipped back to PNNL for repair/testing.
Measurements:nsagndrad60sC1.b1:
  • IRT1 minimum(irt1_min)
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 mean(irt1_mean)

nsagndrad60sC1.a1:
  • IRT1 standard deviation(irt1_sd)
  • IRT1 mean(irt1_mean)
  • IRT1 maximum(irt1_max)
  • IRT1 minimum(irt1_min)


Back To Table of Contents

DQRID : D021211.8
Start DateStart TimeEnd DateEnd Time
02/16/1999003002/16/19992000
02/17/1999000002/17/19990100
Subject:
NSA/GNDRAD/C1 - PIR offline
DataStreams:nsagndrad60sC1.a1
Description:
The PIR was taken off line during this period; data recorded 
              during this period are garbage.
Measurements:nsagndrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded minimum(pir1_min)


Back To Table of Contents

DQRID : D021211.9
Start DateStart TimeEnd DateEnd Time
12/08/1998203012/08/19982050
Subject:
NSA/GNDRAD/C1 - Instrument maintenance
DataStreams:nsagndrad60sC1.a1
Description:
Instrument replaced. Data affected by the work done during this time.
Measurements:nsagndrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded minimum(pir1_min)


Back To Table of Contents

DQRID : D021212.1
Start DateStart TimeEnd DateEnd Time
06/13/2001210006/13/20012200
Subject:
NSA/GNDRAD/C1 - Instrument Maintenance
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
Tip tower was lowered for instrument maintenance.  Data taken 
              during this period are corrupt.
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.10
Start DateStart TimeEnd DateEnd Time
03/03/1999120003/03/19991515
Subject:
NSA/GNDRAD/C1 - Unreasonable PSP Data
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
During the darkness in the middle of this night, the PSP had a
              signal of 15 W/m2 over a three hour long period.  Cause unknown.
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.2
Start DateStart TimeEnd DateEnd Time
06/13/2001230006/21/20011800
Subject:
NSA/GNDRAD/C1 - PSP erroneously replaced by B&W
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
The PSP was erroneously replaced with a B&W on 6/13 and then 
              changed back to the PSP on 6/21. Data should still be good since
              appropriate calibration factors were applied.
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.3
Start DateStart TimeEnd DateEnd Time
06/21/2001180006/21/20011830
Subject:
NSA/GNDRAD/C1 - Instrument maintenance
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
The tip tower was lowered for instrument maintenance.  Data
              recorded are garbage.
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.4
Start DateStart TimeEnd DateEnd Time
11/08/2001010011/09/20010300
Subject:
NSA/GNDRAD/C1 - Bad calibrations applied
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
Bad data due to erroneous calibration constant in configuration 
              file
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PSP1 unshaded mean(psp1_mean)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded minimum(pir1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.5
Start DateStart TimeEnd DateEnd Time
01/21/1999000002/09/19992359
Subject:
NSA/GNDRAD/C1 - Bad PSP calibrations applied
DataStreams:nsagndrad60sC1.a1
Description:
The ground radiation data are bad during this period due to 
              erroneous calibration factors in the logger configuration file.
Measurements:nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • NET mean(net_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded minimum(pir1_min)
  • Net Radiation(net)
  • NET standard deviation(net_sd)
  • Net Radiation, Standard Deviation(net_std)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.6
Start DateStart TimeEnd DateEnd Time
04/27/1999233004/27/19992335
04/28/1999192004/28/19991930
Subject:
NSA/GNDRAD/C1 - Unexplained decrease in PSP and NET data values
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
100 W/m2 dip in the PSP data; NET data also affected. Possibly 
              due to operators working around the instruments.
Measurements:nsagndrad60sC1.b1:
  • NET mean(net_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • NET standard deviation(net_sd)
  • Net Radiation(net)
  • PSP1 unshaded mean(psp1_mean)
  • Net Radiation, Standard Deviation(net_std)
  • Net Radiation, Minima(net_min)
  • PSP1 unshaded minimum(psp1_min)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • NET mean(net_mean)
  • Net Radiation, Minima(net_min)
  • Net Radiation(net)
  • NET standard deviation(net_sd)
  • Net Radiation, Standard Deviation(net_std)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.7
Start DateStart TimeEnd DateEnd Time
03/13/1999194503/13/19991955
Subject:
NSA/GNDRAD/C1 - Data corrupted by brief spike
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
There is a unreasonable spike at this time. Simultaneous spikes on the NET, the PSP, and 
the PIR. Cause unknown, but most likely related to data logger.
Measurements:nsagndrad60sC1.b1:
  • Net Radiation(net)
  • PSP1 unshaded mean(psp1_mean)
  • Net Radiation, Standard Deviation(net_std)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded maximum(psp1_max)
  • NET mean(net_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • NET standard deviation(net_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded minimum(psp1_min)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded minimum(pir1_min)
  • NET standard deviation(net_sd)
  • Net Radiation, Maxima(net_max)
  • NET mean(net_mean)
  • PIR1 unshaded mean(pir1_mean)
  • Net Radiation(net)
  • Net Radiation, Standard Deviation(net_std)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.8
Start DateStart TimeEnd DateEnd Time
03/08/1999000009/30/19992359
Subject:
NSA/GNDRAD/C1 - Rad instruments shaded by shelter
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
Each day around 02:00 - 03:30 GMT there is a unexpected decrease 
              for the PSP irradiance measurement due to a shading problem 
              associated with the swing set location relative to the instrument 
              shelter.  The GNDRAD NET and MFR instrument data also reflects 
              this problem.  Problem was resolved when the GNDRAD instruments 
              were moved to the 10 meter tip tower.
Measurements:nsagndrad60sC1.b1:
  • Net Radiation(net)
  • PSP1 unshaded mean(psp1_mean)
  • Net Radiation, Standard Deviation(net_std)
  • Net Radiation, Maxima(net_max)
  • PSP1 unshaded maximum(psp1_max)
  • NET mean(net_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • NET standard deviation(net_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded minimum(psp1_min)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded minimum(pir1_min)
  • NET standard deviation(net_sd)
  • Net Radiation, Maxima(net_max)
  • NET mean(net_mean)
  • PIR1 unshaded mean(pir1_mean)
  • Net Radiation(net)
  • Net Radiation, Standard Deviation(net_std)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D021212.9
Start DateStart TimeEnd DateEnd Time
11/07/2001210011/07/20012105
Subject:
NSA/GNDRAD/C1 - PSP Data corrupted by brief spike
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
Large unreasonable narrow spike in PSP data; cause not known.
Measurements:nsagndrad60sC1.b1:
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded maximum(psp1_max)

nsagndrad60sC1.a1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)


Back To Table of Contents

DQRID : D030301.1
Start DateStart TimeEnd DateEnd Time
09/24/2002172511/16/20020003
Subject:
NSA/GNDRAD/C1 - No power to IRT
DataStreams:nsagndrad60sC1.a1, nsagndrad60sC1.b1
Description:
The data logger failed to supply power to the IRT.
Measurements:nsagndrad60sC1.b1:
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

nsagndrad60sC1.a1:
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)


Back To Table of Contents

DQRID : D031216.1
Start DateStart TimeEnd DateEnd Time
05/27/2003140009/11/20031906
Subject:
NSA/GNDRAD/C1 - IRT cable failure
DataStreams:nsagndrad60sC1.b1
Description:
The IRT signal became very noisy and the problem was traced to the cable (after the 
instrument was returned to the vendor for diagnosis). The problem started occurring when ice 
surrounding the cable began to melt. The cable was repaired and the instrument reinstalled.
Measurements:nsagndrad60sC1.b1:
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)


Back To Table of Contents

DQRID : D031216.2
Start DateStart TimeEnd DateEnd Time
09/11/2003190610/15/20030015
Subject:
NSA/GNDRAD/C1 - IRT returned to vendor
DataStreams:nsagndrad60sC1.b1
Description:
The IRT was returned to the vendor for diagnosis. It was found to be operating as expected 
and the signal noise problem was traced to the cable. The cable was repaired and the 
instrument reinstalled.
Measurements:nsagndrad60sC1.b1:
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)


Back To Table of Contents

DQRID : D040919.1
Start DateStart TimeEnd DateEnd Time
09/15/2004000009/22/20040552
Subject:
NSA/GNDRAD/C1 - IRT power failure
DataStreams:nsagndrad60sC1.b1
Description:
After performing corrective maintenance which involved turning off power to the GNDRAD 
instruments and data logger, power to the IRT was not restored. The problem was corrected by 
replacing the data logger.
Measurements:nsagndrad60sC1.b1:
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)


Back To Table of Contents

DQRID : D041013.3
Start DateStart TimeEnd DateEnd Time
10/09/2004000010/15/20042359
Subject:
NSA/GNDRAD/C1 - Frosting/Condensation
DataStreams:nsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1
Description:
The GNDRAD PIR and IRT comparison was showing the IRT 2-4 W/m^2 greater than the PIR.  
Suspected snow or frost on the instrument(s).  Corrective maintenance performed 10/15/04 at 
21:30 UT.  Optics of both instruments were cleaned.  Upwelling longwave measurement 
agreement restored (+/- 5 W/^2).

Although the relative performance (agreement) of the two instruments improved after 
corrective maintenance (+/- 2 W/m^2), no correction is suggested because the agreement remains 
with the estimated measurement uncertainty of +/- 4 W/m^2 (IRT) and +/-10 W/m^2 (Inverted 
PIR)
Measurements:nsagndradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsagndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Net Radiation, Standard Deviation(net_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)

nsagndrad20sC1.a1:
  • 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)
  • Instantaneous PIR1 uncorrected irradiance(pir1_voltage)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)


Back To Table of Contents

DQRID : D050825.3
Start DateStart TimeEnd DateEnd Time
08/24/2005003008/24/20050030
Subject:
NSA/GNDRAD/C1 - Power Disconnected Briefly
DataStreams:nsagndrad60sC1.b1
Description:
Power to the Tip tower and Groundrad was disconnected briefly while ground resistance 
measurements were made. 

The following comments are from Inst. Mentor Tom Stoffel: 

The longwave and shortwave irradiances from GNDRAD were not effected by the
temporary power disconnect.  Data are good.  This would have only stopped
the ventilators for a brief time and the data do not show any signs of poor
instrument responses.

The "sfc_ir_temp" data were, however, impacted during the brief (2
readings?) interval.
Measurements:nsagndrad60sC1.b1:
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • External voltage(external_voltage)


Back To Table of Contents

DQRID : D060209.4
Start DateStart TimeEnd DateEnd Time
02/07/2006091002/07/20062350
Subject:
NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors
DataStreams:nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad60sC1.b1
Description:
During the power outage the upwelling global measurement from the PSP instrument shows a 
slight increase from -5 to +0 W/m2.  This is due to removal of thermal offsets induced by 
the AC heater during the power outage.  This heater is installed within the PSP 
ventilator - it is necessary for the NSA/C1 climate.
The upwelling longwave PIR instrument is unaffected due to case and dome temperature 
corrections.
The IRT is AC powered and was not operational during this time period.
Measurements:nsagndradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsagndrad20sC1.a0:
  • Instantaneous Surface Infra-Red Signal(inst_sfc_ir_signal)

nsagndrad60sC1.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)


Back To Table of Contents

DQRID : D060630.39
Start DateStart TimeEnd DateEnd Time
11/04/2004160012/21/20051855
Subject:
NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:nsagndrad60sC1.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:nsagndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


Back To Table of Contents

DQRID : D060824.1
Start DateStart TimeEnd DateEnd Time
08/11/2006193008/25/20061859
Subject:
NSA/GNDRAD/C1 - Incorrect calibration coefficients
DataStreams:nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1
Description:
BarrowC1, Gndrad. On Aug 11th the PSP-US was changed out and the Campbell program was 
changed to reflect this.  However, an old program that uses the 4 coefficient PIR cal factors 
was used. The PIR-UIR was not changed out, however, the logger program coeffs reverted 
back to the 4 Coeffcients.  The Eppley PIR-UIR coefficients for this S/N 30168F3 are :  
K0=0.0, K1(aka k)=.25253, K2= 1.0, K3=-4, Kr=0.0.
Measurements:nsagndradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsagndrad20sC1.a0:
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)

nsagndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • NET mean(net_mean)
  • NET standard deviation(net_sd)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded mean(pir1_mean)
  • Net Radiation, Standard Deviation(net_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • PIR1 unshaded minimum(pir1_min)
  • Net Radiation, Minima(net_min)
  • PIR1 unshaded maximum(pir1_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Net Radiation, Maxima(net_max)

nsagndrad20sC1.a1:
  • 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)
  • Instantaneous PIR1 uncorrected irradiance(pir1_voltage)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)


Back To Table of Contents

DQRID : D990924.1
Start DateStart TimeEnd DateEnd Time
04/06/1998215612/22/20002020
Subject:
NSA/GNDRAD/C1 - IRT insufficiently heated
DataStreams:nsagndrad60sC1.a1
Description:
IRT had insufficient heating to maintain an internal reference temperature above 0 degrees 
C.  Measurements of sky temperature were over-estimated when instrument was below 
freezing.
Measurements:nsagndrad60sC1.a1:
  • IRT1 standard deviation(irt1_sd)
  • IRT1 mean(irt1_mean)
  • IRT1 maximum(irt1_max)
  • IRT1 minimum(irt1_min)


Back To Table of Contents



END OF DATA