Data Quality Reports for Session: 105664 User: danahe Completed: 05/16/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010720.1NSA/SKYRAD/C2 - wrong calibration coefficent for PIRd in ATQnsaskyradC2.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D020814.9NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shadednsaskyrad60sC1.b1
D021111.1NSA/SKYRAD/C1 - Unshaded PIR data unreasonablensaskyrad60sC1.a1
D021111.10NSA/SKYRAD/C1 - Unshaded PIR maintenancensaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.11NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1
D021111.12NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.13NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.14NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1
D021111.15NSA/SKYRAD/C1 - Corrupted Shaded PIR datansaskyrad60sC1.a1
D021111.16NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1
D021111.17NSA/SKYRAD/C1 - Unshaded and Shaded PIR data badnsaskyrad60sC1.a1
D021111.18NSA/SKYRAD/C1 - Unshaded and Shaded PIR data badnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.19NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1
D021111.2NSA/SKYRAD/C1 - Corrupted Unshaded PIR datansaskyrad60sC1.a1
D021111.20NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.21NSA/SKYRAD/C1 - Shaded PIR data suspectnsaskyrad60sC1.a1
D021111.22NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1
D021111.23NSA/SKYRAD/C1 - Shaded PIR data incorrectnsaskyrad60sC1.a1
D021111.3NSA/SKYRAD/C1 - Spikes in Unshaded PIR datansaskyrad60sC1.a1
D021111.4NSA/SKYRAD/C1 - Discontinuity in Unshaded PIR datansaskyrad60sC1.a1
D021111.5NSA/SKYRAD/C1 - Unshaded PIR data incorrectnsaskyrad60sC1.a1
D021111.6NSA/SKYRAD/C1 - Unshaded PIR maintenancensaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.7NSA/SKYRAD/C1 - Miscalibrated Unshaded PIR datansaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.8NSA/SKYRAD/C1 - Noise in Unshaded PIR datansaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.9NSA/SKYRAD/C1 - Unshaded PIR maintenancensaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021213.1NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnightnsaskyrad60sC1.a1
D021213.2NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnightnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021213.3NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnightnsaskyrad60sC1.a1
D021213.4NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnightnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030304.1NSA/SKYRAD/C1: Noisy PIR data at Barrownsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030510.2NSA/SKYRAD/C1 - IRT measurements during precipitation eventsnsaskyrad60sC1.a1
D030819.2NSA/SKYRAD/C1 - IRT failednsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030820.1NSA/SKYRAD/C1 - IRT incorrectly configurednsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030821.2NSA/SKYRAD/C1 - IRT incorrect min/max valuensaskyrad60sC1.b1
D030911.1NSA/SKYRAD/C1 - Missing data due to Logger FailurensaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
D031007.2NSA/SKYRAD/C1 - IRT measurements during precipitation eventsnsaskyrad60sC1.b1
D031226.1NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too largensaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D040129.2NSA/SKYRAD/C1 - Noisy PIR data at Barrownsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D040213.4NSA/SKYRAD/C1 - Downwelling IRT biasnsaskyrad60sC1.b1
D040415.1NSA/SKYRAD/C1 - direct normal pyhrheliometer (NIP)shaded by WWRpnsaskyradC1.00, nsaskyrad60sC1.b1
D040421.2NSA/SKYRAD/C1 - Tracker Inoperativensaskyrad60sC1.b1
D040421.3NSA/SKYRAD/C1 - itermittant IRT biasnsaskyrad60sC1.b1
D040523.1NSA/SKYRAD/C1 - Frosting and CondensationnsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
D050604.1NSA/SKYRAD/C1 - Datalogger grounding problemnsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
D051101.2NSA/SKYRAD/C1 - IRT failurensaskyrad60sC1.b1
D051107.2NSA/SKYRAD/C1 - Instrument logger, possible gounding problemnsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D051202.1NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2
downwelling longwave
nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
D060630.37NSA/SKYRAD/C1 - Reprocess: Longwave Calibration errornsaskyrad60sC1.b1
D060724.2NSA/SKYRAD/C1 - Summer solstice shading of radiometersnsaskyrad60sC1.b1
D981212.1NSA/SKYRAD - Barrow SKYRAD PIRD Misconfiguration 12/9 - 12/12/98nsaskyrad20sC1.a1, nsaskyrad60sC1.a1
D990108.2NSA/SKYRAD/C1 - IRT removed for repairnsaskyradC1.00, nsaskyrad60sC1.a1
D990108.3NSA/SKYRAD/C1 - IRT insufficiently insulatednsaskyradC1.00, nsaskyrad60sC1.a1
D990108.4NSA/SKYRAD/C1 - IRT insufficiently insulatednsaskyradC1.00, nsaskyrad60sC1.a1
D990108.5NSA/SKYRAD/C1 - IRT removed from servicensaskyradC1.00, nsaskyrad60sC1.a1
D990924.2NSA/SKYRAD/C1 - IRT insufficiently heatednsaskyrad60sC1.a1


DQRID : D010720.1
Start DateStart TimeEnd DateEnd Time
07/06/2001230007/19/20010100
Subject:
NSA/SKYRAD/C2 - wrong calibration coefficent for PIRd in ATQ
DataStreams:nsaskyradC2.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Due to confusion over ARM calibration policy, a revised calibration was installed
and was in place for the duration of the time period indicated.  When the error
was noted, the original calibration was re-installed.

Users may notice discontinuities in PIRd data at the time boundaries of this
DQR.
Measurements:nsaskyrad20sC1.a1:
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)

nsaskyrad60sC1.a1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)

nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)

nsaskyradC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D020814.9
Start DateStart TimeEnd DateEnd Time
05/15/2002190506/24/20022359
Subject:
NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shaded
DataStreams:nsaskyrad60sC1.b1
Description:
On 5/15/02 the Global PIR was moved from the unshaded
position on the Skyrad stand to a shaded spot on the
tracker.  It is still using the same Logger channel as
it did as an unshaded PIR even though it is now shaded.
Measurements:nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)


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DQRID : D021111.1
Start DateStart TimeEnd DateEnd Time
01/12/1999220001/12/19992230
01/17/1999050001/17/19990730
01/24/1999120001/24/19991400
02/13/1999070002/13/19992359
02/19/1999054502/20/19991030
02/20/1999211502/21/19990200
Subject:
NSA/SKYRAD/C1 - Unshaded PIR data unreasonable
DataStreams:nsaskyrad60sC1.a1
Description:
Periods of very large negative values. 
Negative readings of thermistors caused concurrent calculation 
in logger of temperature to fail.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.10
Start DateStart TimeEnd DateEnd Time
04/14/1999211504/14/19992145
Subject:
NSA/SKYRAD/C1 - Unshaded PIR maintenance
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
During this time, the PIR unshaded was swapped on the SKYRAD stand.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021111.11
Start DateStart TimeEnd DateEnd Time
10/28/1998030010/28/19980500
10/29/1998060010/29/19980800
11/07/1998010011/07/19980400
11/12/1998030011/12/19981200
11/23/1998090011/23/19982100
Subject:
NSA/SKYRAD/C1 - PIR data suspect
DataStreams:nsaskyrad60sC1.a1
Description:
PIR shaded and PIR unshaded show unusual differences during this time period, frosting or 
icing is the most probable explanation but we don't know for sure.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.12
Start DateStart TimeEnd DateEnd Time
04/26/2001090004/26/20011800
Subject:
NSA/SKYRAD/C1 - PIR data suspect
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
PIR shaded and PIR unshaded show unusual differences during this time period, frosting or 
icing is the most probable explanation but we don't know for sure.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021111.13
Start DateStart TimeEnd DateEnd Time
11/05/2001000011/07/20012010
Subject:
NSA/SKYRAD/C1 - Shaded PIR data unreasonable
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Scientificly unreasonable data values, the problem disappeared after the datalogger was 
exchanged with the spare. The data logger was exchanged on 11/7 at 20:10 GMT.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)

nsaskyrad60sC1.b1:
  • PIR shaded mean(pirs_mean)
  • PIR shaded minimum(pirs_min)
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)


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DQRID : D021111.14
Start DateStart TimeEnd DateEnd Time
01/12/1999220001/12/19992230
01/17/1999050001/17/19990730
01/24/1999120001/24/19991400
02/13/1999070002/13/19992359
02/19/1999054502/20/19991030
02/20/1999211502/21/19990200
Subject:
NSA/SKYRAD/C1 - Shaded PIR data unreasonable
DataStreams:nsaskyrad60sC1.a1
Description:
Periods of very large negative values. 
Negative readings of thermistors causes concurrent calculation 
in logger of temperature to fail.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.15
Start DateStart TimeEnd DateEnd Time
11/18/1998210511/18/19982110
11/20/1998034011/20/19980350
11/20/1998201011/20/19982020
11/24/1998033011/24/19980340
11/25/1998014511/25/19980150
11/25/1998203011/25/19982035
11/26/1998030011/26/19980310
11/26/1998153011/26/19981540
11/27/1998011011/27/19980120
11/27/1998084011/27/19980850
11/27/1998092511/27/19980935
11/27/1998194011/27/19981950
11/28/1998065511/28/19980705
11/29/1998045011/29/19980505
11/29/1998233511/29/19982350
Subject:
NSA/SKYRAD/C1 - Corrupted Shaded PIR data
DataStreams:nsaskyrad60sC1.a1
Description:
Erroneous data due to file truncation problem during logger download and corresponding 
ingest problems when the truncated lines were read. Problem was identified in a PIF 
submitted by Rune Storvold
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.16
Start DateStart TimeEnd DateEnd Time
12/11/1998222512/11/19982235
12/15/1998180012/15/19981810
12/16/1998181012/16/19981815
02/16/1999194502/16/19992010
02/17/1999214502/17/19992200
03/02/1999182503/02/19991835
03/09/1999183003/09/19991840
03/10/1999034003/10/19990350
Subject:
NSA/SKYRAD/C1 - Shaded PIR data unreasonable
DataStreams:nsaskyrad60sC1.a1
Description:
There was  a 10-25 W/m2 spike in data probably due to operator working around instrument 
or cleaning it.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.17
Start DateStart TimeEnd DateEnd Time
01/17/1999170001/17/19991815
Subject:
NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad
DataStreams:nsaskyrad60sC1.a1
Description:
Large unreasonable spikes and some missing data points. Cause of problem unknown.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.18
Start DateStart TimeEnd DateEnd Time
04/14/1999211504/14/19992145
Subject:
NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Data during this time period is corrupted (seen as a dip in the measurements). During this 
time, the PIR unshaded was being replaced on the SKYRAD stand.
This work affected the shaded PIR as well due to the presence of the operators in it's 
field of view.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded standard deviation(pirs_sd)
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded mean(pirs_mean)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded mean(pir1_mean)
  • PIR shaded minimum(pirs_min)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded standard deviation(pirs_sd)


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DQRID : D021111.19
Start DateStart TimeEnd DateEnd Time
10/28/1998030010/28/19980500
10/29/1998060010/29/19980800
11/07/1998010011/07/19980400
11/12/1998030011/12/19981200
11/23/1998090011/23/19982100
Subject:
NSA/SKYRAD/C1 - PIR data suspect
DataStreams:nsaskyrad60sC1.a1
Description:
PIR shaded and PIR unshaded show unusual differences during this time period, frosting or 
icing is one possible explanation but we don't know.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.2
Start DateStart TimeEnd DateEnd Time
11/14/1998200011/14/19982005
11/18/1998210511/18/19982110
11/20/1998034011/20/19980350
11/20/1998201011/20/19982020
11/24/1998033011/24/19980340
11/25/1998014511/25/19980150
11/25/1998203011/25/19982035
11/26/1998030011/26/19980310
11/26/1998153011/26/19981540
11/27/1998011011/27/19980120
11/27/1998084011/27/19980850
11/27/1998092511/27/19980935
11/27/1998194011/27/19981950
11/28/1998065511/28/19980705
11/29/1998045011/29/19980505
11/29/1998233511/29/19982350
Subject:
NSA/SKYRAD/C1 - Corrupted Unshaded PIR data
DataStreams:nsaskyrad60sC1.a1
Description:
Erroneous data due to file truncation problem during logger download and corresponding 
ingest problems when the truncated lines were read. Problem was identified in a PIF 
submitted by Rune Storvold
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.20
Start DateStart TimeEnd DateEnd Time
04/25/2001100004/25/20011900
04/26/2001090004/26/20011800
Subject:
NSA/SKYRAD/C1 - PIR data suspect
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
PIR shaded and PIR unshaded show unusual differences during this time period, frosting or 
icing is one possible explanation but we don't know.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded standard deviation(pirs_sd)
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded mean(pirs_mean)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded mean(pir1_mean)
  • PIR shaded minimum(pirs_min)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded standard deviation(pirs_sd)


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DQRID : D021111.21
Start DateStart TimeEnd DateEnd Time
12/08/1998000012/15/19981200
Subject:
NSA/SKYRAD/C1 - Shaded PIR data suspect
DataStreams:nsaskyrad60sC1.a1
Description:
The instrument had incorrect calibration settings on two accounts: 1. From 12/09 to 12/12, 
the calibration was set incorrectly. 2. The dome correction coefficients were not 
properly set until the early morning of 12/14. The erroneous settings caused an error probably 
less than 4%.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.22
Start DateStart TimeEnd DateEnd Time
12/14/1998000002/04/19992359
Subject:
NSA/SKYRAD/C1 - PIR data suspect
DataStreams:nsaskyrad60sC1.a1
Description:
The PIR unshaded and the PIR shaded have a persistent offset between them, ranging from 0 
to 10 W/m2. It is particularly apparent during clear sky. The line of sight of the PIRd 
is obstructed making it difficult to assess the problem. The instrument was moved to its 
proper location in early February. The problem seems to have resolved itself with the move.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR1 unshaded mean(pir1_mean)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.23
Start DateStart TimeEnd DateEnd Time
02/11/1999000002/11/19992359
Subject:
NSA/SKYRAD/C1 - Shaded PIR data incorrect
DataStreams:nsaskyrad60sC1.a1
Description:
There were two sudden increases (about 50-100 W/m2) at 23:00 and 24:00.
Measurements:nsaskyrad60sC1.a1:
  • PIR shaded maximum(pirs_max)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded minimum(pirs_min)
  • PIR shaded mean(pirs_mean)


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DQRID : D021111.3
Start DateStart TimeEnd DateEnd Time
12/01/1998220012/01/19982359
01/28/1999014501/28/19990200
03/02/1999182003/02/19991835
03/10/1999174003/10/19991750
03/13/1999174503/13/19991755
Subject:
NSA/SKYRAD/C1 - Spikes in Unshaded PIR data
DataStreams:nsaskyrad60sC1.a1
Description:
There was  a 10-25 W/m2 spike in data probably due to operator working around instrument 
or cleaning it.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.4
Start DateStart TimeEnd DateEnd Time
02/03/1999230002/03/19992310
Subject:
NSA/SKYRAD/C1 - Discontinuity in Unshaded PIR data
DataStreams:nsaskyrad60sC1.a1
Description:
There was a sudden increase in irradiance (from 140 to 190 W/m2) at 02/03/99 23:00.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.5
Start DateStart TimeEnd DateEnd Time
12/08/1998000012/10/19982359
Subject:
NSA/SKYRAD/C1 - Unshaded PIR data incorrect
DataStreams:nsaskyrad60sC1.a1
Description:
Data from this time period is incorrect because instrument was swapped out for 
calibration and correct calibrations were not entered for replacement.  Some 
missing data during this time interval as well
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)


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DQRID : D021111.6
Start DateStart TimeEnd DateEnd Time
03/15/2001234503/16/20010045
Subject:
NSA/SKYRAD/C1 - Unshaded PIR maintenance
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Unreasonable data from 3/15 23:45 until 3/16 0:45 due to exchange of PIR instrument to the 
PIR spare (32054F3). This was done so the PIR could go to NOAA/CMDL in Boulder for 
calibration as part of the IPARSC II IOP and be included in this work.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021111.7
Start DateStart TimeEnd DateEnd Time
03/16/2001004503/25/20010235
Subject:
NSA/SKYRAD/C1 - Miscalibrated Unshaded PIR data
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Calibration coefficient for PIR spare (32054F3) was updated on 3/25 2:35 GMT. The old PIR 
cal coefficient was used during this period. The PIR spare (32054F3) was calibrated by 
NOAA/CMDL in Boulder prior to the IOP and replacement on 3/16 when the original station PIR 
was shipped to Boulder for a post IOP calibration.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021111.8
Start DateStart TimeEnd DateEnd Time
10/06/2001100011/07/20012359
Subject:
NSA/SKYRAD/C1 - Noise in Unshaded PIR data
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Noise increased and an offset from shaded PIR became apparent during this period.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021111.9
Start DateStart TimeEnd DateEnd Time
04/01/1999230004/01/19992359
Subject:
NSA/SKYRAD/C1 - Unshaded PIR maintenance
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
A new PIR was installed during  this time period by Phil Utley.
Measurements:nsaskyrad60sC1.a1:
  • PIR1 unshaded standard deviation(pir1_sd)
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)

nsaskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PIR1 unshaded mean(pir1_mean)
  • PIR1 unshaded standard deviation(pir1_sd)


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DQRID : D021213.1
Start DateStart TimeEnd DateEnd Time
05/01/1998000008/10/19980000
Subject:
NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight
DataStreams:nsaskyrad60sC1.a1
Description:
Around local midnight 9:30-10:30 GMT during summer clear sky the normal incidence 
pyranometer is shaded by the instrument stand.This causes the reading to be 0 W/m2. If cosine 
correction is applied for irradiance calulations this effect is negligible due to the low 
solar angle.
Measurements:nsaskyrad60sC1.a1:
  • NIP maximum(nip_max)
  • NIP standard deviation(nip_sd)
  • NIP minimum(nip_min)
  • NIP mean(nip_mean)


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DQRID : D021213.2
Start DateStart TimeEnd DateEnd Time
05/01/1999000008/10/19990000
05/01/2000000008/10/20000000
05/01/2001000008/10/20010000
05/01/2002000008/10/20020000
Subject:
NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Around local midnight 9:30-10:30 GMT during summer clear sky the normal incidence 
pyranometer is shaded by the instrument stand.This causes the reading to be 0 W/m2. If cosine 
correction is applied for irradiance calulations this effect is negligible due to the low 
solar angle.
Measurements:nsaskyrad60sC1.a1:
  • NIP maximum(nip_max)
  • NIP standard deviation(nip_sd)
  • NIP minimum(nip_min)
  • NIP mean(nip_mean)

nsaskyrad60sC1.b1:
  • NIP maximum(nip_max)
  • NIP standard deviation(nip_sd)
  • NIP minimum(nip_min)
  • NIP mean(nip_mean)


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DQRID : D021213.3
Start DateStart TimeEnd DateEnd Time
05/01/1998000008/10/19980000
Subject:
NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight
DataStreams:nsaskyrad60sC1.a1
Description:
Just past local midnight (11:00-11:40 GMT during summer clear sky) the global 
hemispherical pyranometer is shaded by the MFRSR instrument for about 40 minutes. This causes the 
reading to be 0 W/m2. This effect would be negligible in a daily average due to the low 
solar angle.
Measurements:nsaskyrad60sC1.a1:
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded standard deviation(psp1_sd)


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DQRID : D021213.4
Start DateStart TimeEnd DateEnd Time
05/01/1999000008/10/19990000
05/01/2000000008/10/20000000
05/01/2001000008/10/20010000
05/01/2002000008/10/20020000
Subject:
NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Just past local midnight (11:00-11:40 GMT during summer clear sky) the global 
hemispherical pyranometer is shaded by the MFRSR instrument for about 40 minutes. This causes the 
reading to be 0 W/m2. This effect would be negligible in a daily average due to the low 
solar angle.
Measurements:nsaskyrad60sC1.a1:
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded standard deviation(psp1_sd)

nsaskyrad60sC1.b1:
  • PSP1 unshaded maximum(psp1_max)
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP1 unshaded mean(psp1_mean)
  • PSP1 unshaded minimum(psp1_min)


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DQRID : D030304.1
Start DateStart TimeEnd DateEnd Time
05/24/2002000006/24/20022359
Subject:
NSA/SKYRAD/C1: Noisy PIR data at Barrow
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
PIR1 data is noisy throughout the entire period, though there is still a definite signal 
through the noise.
Measurements:nsaskyrad60sC1.a1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)

nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)


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DQRID : D030510.2
Start DateStart TimeEnd DateEnd Time
02/14/1998233003/03/20032359
Subject:
NSA/SKYRAD/C1 - IRT measurements during precipitation events
DataStreams:nsaskyrad60sC1.a1
Description:
The IRT measurement of sky/cloud temperature was in question during precipitation events 
because rain or snow could accumulate in the upward-pointed lens barrel. This was 
corrected by reorienting the IRT to measure the sky temperature as reflected by a gold mirror.
Measurements:nsaskyrad60sC1.a1:
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)


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DQRID : D030819.2
Start DateStart TimeEnd DateEnd Time
04/05/2002233006/27/20021920
Subject:
NSA/SKYRAD/C1 - IRT failed
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
Measurements:nsaskyrad60sC1.a1:
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)

nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D030820.1
Start DateStart TimeEnd DateEnd Time
06/27/2002192007/10/20021900
Subject:
NSA/SKYRAD/C1 - IRT incorrectly configured
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
The IRT was removed for repair and replaced with a
spare that was not configured properly.  Data are incorrect.
Measurements:nsaskyrad60sC1.a1:
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)

nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D030821.2
Start DateStart TimeEnd DateEnd Time
04/01/2001000003/03/20032359
Subject:
NSA/SKYRAD/C1 - IRT incorrect min/max value
DataStreams:nsaskyrad60sC1.b1
Description:
The values of valid_min and valid_max for field sky_ir_temp were incorrectly assigned to 
-49.7 and +50.0 C, respectively. The actual values should be -60 and +40 C.
Measurements:nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D030911.1
Start DateStart TimeEnd DateEnd Time
09/07/2003110009/19/20032359
Subject:
NSA/SKYRAD/C1 - Missing data due to Logger Failure
DataStreams:nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
Description:
Logger failure resulted in missing data during the specified period.
Measurements:nsaskyrad20sC1.a1:
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_case_resist)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • north latitude for all the input platforms.(lat)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Downwelling Ultraviolet Biometer Temperature(inst_down_uvb_temp)
  • Instantaneous PIR2 case thermistor(pir2_case_therm)
  • Instantaneous Uncorrected Downwelling Ultraviolet Irradiance, UV Biometer(inst_down_uvb_irradiance)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Unshaded Pyrgeometer(inst_down_long_hemisp_unshaded_tp)
  • Instantaneous PIR2 dome thermistor(pir2_dome_therm)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_dome_resist)
  • GPS raw data filename(filename)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)
  • Instantaneous UVB temperature(uvb_temp)
  • Instantaneous UVB uncorrected irradiance(uvb_uncorr_irradiance)
  • Instantaneous PIR2 uncorrected irradiance(pir2_uncorr_irradiance)
  • Instantaneous PIR1 uncorrected irradiance(pir1_uncorr_irradiance)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Time offset from base_time(base_time)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • IRT1 minimum(irt1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Bit data. See details.(bit_data)
  • PSP1 unshaded mean(psp1_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • GPS raw data filename(filename)
  • PSP1 unshaded minimum(psp1_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Time offset from base_time(base_time)
  • PIR1 unshaded minimum(pir1_min)
  • UVB minimum(uvb_min)
  • PIR shaded minimum(pirs_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Internal voltage(internal_voltage)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb)
  • IRT1 maximum(irt1_max)
  • Internal Logger Temperature(logger_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • NIP maximum(nip_max)
  • PIR shaded maximum(pirs_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • PSP shaded minimum(psps_min)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • UVB mean(uvb_mean)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max)
  • NIP minimum(nip_min)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min)
  • UVB standard deviation(uvb_sd)
  • north latitude for all the input platforms.(lat)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded mean(pirs_mean)
  • NIP standard deviation(nip_sd)
  • NIP mean(nip_mean)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Standard Deviation(down_uvb_std)
  • PSP shaded mean(psps_mean)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • UVB maximum(uvb_max)
  • PIR1 unshaded mean(pir1_mean)
  • PSP shaded standard deviation(psps_sd)
  • altitude above sea levelaltunits(alt)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • IRT1 standard deviation(irt1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • External voltage(external_voltage)
  • PSP shaded maximum(psps_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • PSP1 unshaded maximum(psp1_max)
  • IRT1 mean(irt1_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)


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DQRID : D031007.2
Start DateStart TimeEnd DateEnd Time
04/01/1999000003/28/20030200
Subject:
NSA/SKYRAD/C1 - IRT measurements during precipitation events
DataStreams:nsaskyrad60sC1.b1
Description:
The IRT measurement of sky/cloud temperature was in question during
precipitation events because rain or snow could accumulate in the
upward-pointed lens barrel. This was corrected by reorienting the
IRT to measure the sky temperature as reflected by a gold mirror.
Measurements:nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


Back To Table of Contents

DQRID : D031226.1
Start DateStart TimeEnd DateEnd Time
08/20/2001000001/23/20020000
Subject:
NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
This problem only became apparent as NSA C1 nights became long enough for full darkness. 
The shaded global diffuse instrument (Eppley 8-48) showed a negative nighttime offset 
larger than the expected 0 to -4 W/m2. Typically -5 to -8 W/m2. This size of offset is not 
uncommon with Eppley PSPs but not observed with Eppley 8-48s.  The problem was corrected 
with replacement of mounting screws which were creating a ground loop.
Measurements:nsaskyrad60sC1.a1:
  • PSP shaded minimum(psps_min)
  • PSP shaded maximum(psps_max)
  • PSP shaded mean(psps_mean)
  • PSP shaded standard deviation(psps_sd)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • PSP shaded maximum(psps_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • PSP shaded minimum(psps_min)
  • PSP shaded mean(psps_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • PSP shaded standard deviation(psps_sd)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)


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DQRID : D040129.2
Start DateStart TimeEnd DateEnd Time
06/25/2002000001/16/20032359
Subject:
NSA/SKYRAD/C1 - Noisy PIR data at Barrow
DataStreams:nsaskyrad60sC1.a1, nsaskyrad60sC1.b1
Description:
PIR1 data is noisy throughout the entire period, though there is still a definite signal 
through the noise.
Measurements:nsaskyrad60sC1.a1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)

nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)


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DQRID : D040213.4
Start DateStart TimeEnd DateEnd Time
12/11/2003120001/09/20042120
Subject:
NSA/SKYRAD/C1 - Downwelling IRT bias
DataStreams:nsaskyrad60sC1.b1
Description:
The downwelling IRT was measuring higher sky/cloud temperatures than the AERI. The problem 
was corrected when the mirror was replaced.
Measurements:nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D040415.1
Start DateStart TimeEnd DateEnd Time
04/09/2004150004/16/20041600
Subject:
NSA/SKYRAD/C1 - direct normal pyhrheliometer (NIP)shaded by WWRp
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.b1
Description:
Direct normal radiation values drop nearly to zero from about 1515 GMT - 1525 GMT from 
4/05 to 4/16 2004.  Field observation reveals the WWRp is shading the NIP instrument during 
this time.  This shading event was expected to occur several months after the soltice as 
well but archive data showed no shading on or around 8/30/2004.  The direct normal 
instrument was apparently only shaded during the time period noted.
Measurements:nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • NIP maximum(nip_max)
  • NIP standard deviation(nip_sd)
  • NIP minimum(nip_min)
  • NIP mean(nip_mean)


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DQRID : D040421.2
Start DateStart TimeEnd DateEnd Time
11/10/2003000002/16/20040230
Subject:
NSA/SKYRAD/C1 - Tracker Inoperative
DataStreams:nsaskyrad60sC1.b1
Description:
A blown fuse resulted in the tracker not shading the PIR and B&W
and the NIP not following the sun.
Measurements:nsaskyrad60sC1.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)


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DQRID : D040421.3
Start DateStart TimeEnd DateEnd Time
03/28/2003020006/21/20060215
Subject:
NSA/SKYRAD/C1 - itermittant IRT bias
DataStreams:nsaskyrad60sC1.b1
Description:
A problem with the SKYRAD IRT that itermittantly produced a gradual increase in the sky 
temperature measurement then a sudden correction, as compared to AERI, appears to have been 
caused by a combination of a failing IR detector, a poor signal cable, a contaminated 
(with condensation or frost) mirror or lens, and low ambient temperatures. The positive 
bias was apparently not consistant in either frequency or duration but on days when the 
unusual behavior is observed, it usually occurred from about 00:00 to 06:00 local time. 

The instrument was repaired and recalibrated and the signal cable replaced.
Measurements:nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D040523.1
Start DateStart TimeEnd DateEnd Time
05/13/2004000005/18/20040000
Subject:
NSA/SKYRAD/C1 - Frosting and Condensation
DataStreams:nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
Description:
The operators in both Barrow and Atqasuk reported significant ice buildup during nights 
for the period specified, with the ice melting during the days. This condition is reported 
in preventative maintenance reports as continuing until on or near 5/18/2004. However, 
review of data shows no discernable radiometer icing.
Measurements:nsaskyrad20sC1.a1:
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_case_resist)
  • Instantaneous UVB temperature(uvb_temp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous UVB uncorrected irradiance(uvb_uncorr_irradiance)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous PIR2 uncorrected irradiance(pir2_uncorr_irradiance)
  • Instantaneous PIR1 uncorrected irradiance(pir1_uncorr_irradiance)
  • Instantaneous Downwelling Ultraviolet Biometer Temperature(inst_down_uvb_temp)
  • Instantaneous PIR2 case thermistor(pir2_case_therm)
  • Instantaneous Uncorrected Downwelling Ultraviolet Irradiance, UV Biometer(inst_down_uvb_irradiance)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Unshaded Pyrgeometer(inst_down_long_hemisp_unshaded_tp)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous PIR2 dome thermistor(pir2_dome_therm)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_dome_resist)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • NIP maximum(nip_max)
  • PIR shaded maximum(pirs_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • PSP shaded minimum(psps_min)
  • IRT1 minimum(irt1_min)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • UVB mean(uvb_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • NIP minimum(nip_min)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • UVB standard deviation(uvb_sd)
  • PSP1 unshaded mean(psp1_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • PIR shaded standard deviation(pirs_sd)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • PIR shaded mean(pirs_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • NIP standard deviation(nip_sd)
  • PSP1 unshaded minimum(psp1_min)
  • NIP mean(nip_mean)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Standard Deviation(down_uvb_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • PSP shaded mean(psps_mean)
  • PIR1 unshaded minimum(pir1_min)
  • UVB minimum(uvb_min)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • UVB maximum(uvb_max)
  • PIR shaded minimum(pirs_min)
  • PIR1 unshaded mean(pir1_mean)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • PSP shaded standard deviation(psps_sd)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • PIR1 unshaded standard deviation(pir1_sd)
  • IRT1 standard deviation(irt1_sd)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • PIR1 unshaded maximum(pir1_max)
  • Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb)
  • PSP shaded maximum(psps_max)
  • IRT1 maximum(irt1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • PSP1 unshaded maximum(psp1_max)
  • IRT1 mean(irt1_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)


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DQRID : D050604.1
Start DateStart TimeEnd DateEnd Time
05/13/2005110005/13/20052000
05/19/2005083005/24/20051800
05/28/2005173005/29/20051800
05/31/2005150006/04/20050900
06/10/2005030006/10/20050400
Subject:
NSA/SKYRAD/C1 - Datalogger grounding problem
DataStreams:nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1
Description:
Both PIRs reported unreasonable high readings with coincident low reading from the IRT. 
Since both PIR instruments exhibited exactly the same behaviour and the IRT an opposite 
response during large suspect data excursions this indicates that the false signal maybe the 
result of poor grounding. 

The PIR1,2 data and the IRT data are most adversely affected.  During the problem periods 
PIR irradiance increased (typ pos 200-300W/m2) while the IRT response was negative (typ 
neg 20-30W/m2) but followed the response of the PIR.  The Skyrad shortwave instruments 
were also affected but to much less extent (within their uncertainties).  Data quality flags 
are typically not triggered during these problem periods.

Data logger grounding was improved on 6/10 2005.  The problem hasn't re-occurred since 
that time.
Measurements:nsaskyrad20sC1.a1:
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_case_resist)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • north latitude for all the input platforms.(lat)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Downwelling Ultraviolet Biometer Temperature(inst_down_uvb_temp)
  • Instantaneous PIR2 case thermistor(pir2_case_therm)
  • Instantaneous Uncorrected Downwelling Ultraviolet Irradiance, UV Biometer(inst_down_uvb_irradiance)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Unshaded Pyrgeometer(inst_down_long_hemisp_unshaded_tp)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous PIR2 dome thermistor(pir2_dome_therm)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_dome_resist)
  • GPS raw data filename(filename)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)
  • Instantaneous UVB temperature(uvb_temp)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous UVB uncorrected irradiance(uvb_uncorr_irradiance)
  • Instantaneous PIR2 uncorrected irradiance(pir2_uncorr_irradiance)
  • Instantaneous PIR1 uncorrected irradiance(pir1_uncorr_irradiance)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Time offset from base_time(base_time)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • IRT1 minimum(irt1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Bit data. See details.(bit_data)
  • PSP1 unshaded mean(psp1_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • GPS raw data filename(filename)
  • PSP1 unshaded minimum(psp1_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Time offset from base_time(base_time)
  • PIR1 unshaded minimum(pir1_min)
  • UVB minimum(uvb_min)
  • PIR shaded minimum(pirs_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Internal voltage(internal_voltage)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb)
  • IRT1 maximum(irt1_max)
  • Internal Logger Temperature(logger_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • NIP maximum(nip_max)
  • PIR shaded maximum(pirs_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • PSP shaded minimum(psps_min)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • UVB mean(uvb_mean)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max)
  • NIP minimum(nip_min)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min)
  • UVB standard deviation(uvb_sd)
  • north latitude for all the input platforms.(lat)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded mean(pirs_mean)
  • NIP standard deviation(nip_sd)
  • NIP mean(nip_mean)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Standard Deviation(down_uvb_std)
  • PSP shaded mean(psps_mean)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • UVB maximum(uvb_max)
  • PIR1 unshaded mean(pir1_mean)
  • PSP shaded standard deviation(psps_sd)
  • altitude above sea levelaltunits(alt)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • IRT1 standard deviation(irt1_sd)
  • PIR1 unshaded maximum(pir1_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • External voltage(external_voltage)
  • PSP shaded maximum(psps_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • PSP1 unshaded maximum(psp1_max)
  • IRT1 mean(irt1_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)

nsaskyrad20sC1.a0:
  • Time offset from base_time(base_time)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • altitude above sea levelaltunits(alt)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)


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DQRID : D051101.2
Start DateStart TimeEnd DateEnd Time
10/31/2005060001/18/20060032
Subject:
NSA/SKYRAD/C1 - IRT failure
DataStreams:nsaskyrad60sC1.b1
Description:
The IRT failed and was replaced with a spare.
Measurements:nsaskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)


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DQRID : D051107.2
Start DateStart TimeEnd DateEnd Time
10/22/2005123010/22/20051600
Subject:
NSA/SKYRAD/C1 - Instrument logger, possible gounding problem
DataStreams:nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:
Possible Skyrad datalogger grounding issues have re-appeared at NSA/C1 for only this short 
time period.  Anomalous data readings during the time range specified are similar to 
problem which occurred in early summer 2005.
Measurements:nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

nsaskyrad60sC1.b1:
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • NIP maximum(nip_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • PIR shaded maximum(pirs_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • IRT1 minimum(irt1_min)
  • PSP shaded minimum(psps_min)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • UVB mean(uvb_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • NIP minimum(nip_min)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • UVB standard deviation(uvb_sd)
  • north latitude for all the input platforms.(lat)
  • Bit data. See details.(bit_data)
  • PSP1 unshaded mean(psp1_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • PIR shaded standard deviation(pirs_sd)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • PIR shaded mean(pirs_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • GPS raw data filename(filename)
  • NIP standard deviation(nip_sd)
  • PSP1 unshaded minimum(psp1_min)
  • NIP mean(nip_mean)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Standard Deviation(down_uvb_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • PSP shaded mean(psps_mean)
  • PIR1 unshaded minimum(pir1_min)
  • Time offset from base_time(base_time)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • UVB minimum(uvb_min)
  • UVB maximum(uvb_max)
  • PIR shaded minimum(pirs_min)
  • PIR1 unshaded mean(pir1_mean)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • PSP shaded standard deviation(psps_sd)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • altitude above sea levelaltunits(alt)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Internal voltage(internal_voltage)
  • IRT1 standard deviation(irt1_sd)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • PIR1 unshaded maximum(pir1_max)
  • External voltage(external_voltage)
  • Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb)
  • IRT1 maximum(irt1_max)
  • PSP shaded maximum(psps_max)
  • Internal Logger Temperature(logger_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • PSP1 unshaded maximum(psp1_max)
  • IRT1 mean(irt1_mean)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)

nsaskyrad20sC1.a0:
  • Time offset from base_time(base_time)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • north latitude for all the input platforms.(lat)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)
  • altitude above sea levelaltunits(alt)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • east longitude for all the input platforms.(lon)


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DQRID : D051202.1
Start DateStart TimeEnd DateEnd Time
11/04/2004190009/09/20052142
Subject:
NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 
downwelling longwave
DataStreams:nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:
The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" 
and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set 
to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were 
installed.  The result of no delay in these measurements results in an error in the measured 
resistance of the thermistors, Case1 and Dome2 and thus the calculated PIR1 and PIR2 
irradiances.  The errors are inversely proportial to temperature.

Users can apply the temperature dependent irradiance corrections shown in the table below. 
 Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 
W/m2.  The error corrections become the same order of magnitude or larger than the 
instrument uncertainties at or below 260K or 9F. 

Correction Table for Skyrad (TWP and NSA) DIR1 and DIR2 Irradiance				
	DIR1	DIR1	DIR2	DIR2
T[F]	Tcase[K]	Correction[W/m2]	Tdome[K]	Correction[W/m2]
109.4	316.13	0.00	316.13	0.00
100.5	311.20	-0.15	311.20	0.12
93.2	307.14	-0.12	307.14	0.10
87.0	303.70	-0.10	303.70	0.08
81.6	300.70	-0.17	300.70	0.14
77.0	298.15	-0.22	298.15	0.18
59.4	288.35	-0.34	288.35	0.27
47.4	281.72	-0.23	281.72	0.18
38.5	276.74	-0.42	276.74	0.34
31.3	272.77	-0.48	272.77	0.38
25.4	269.48	-0.61	269.48	0.49
20.3	266.67	-0.67	266.67	0.54
16.0	264.25	-0.82	264.25	0.66
12.1	262.11	-0.98	262.11	0.79
8.7	260.19	-0.97	260.19	0.78
5.6	258.46	-1.07	258.46	0.86
2.7	256.89	-1.17	256.89	0.94
0.1	255.44	-1.33	255.44	1.07
-2.3	254.11	-1.41	254.11	1.13
-4.5	252.87	-1.43	252.87	1.15
-6.6	251.71	-1.52	251.71	1.22
-8.5	250.63	-1.63	250.63	1.31
-10.4	249.62	-1.73	249.62	1.39
-12.2	248.58	-1.79	248.58	1.44
-15.4	246.82	-1.93	246.82	1.55
-18.3	245.23	-2.05	245.23	1.65
-20.9	243.78	-2.22	243.78	1.78
-23.3	242.44	-2.36	242.44	1.89
-25.5	241.21	-2.58	241.21	2.07
-27.5	240.07	-2.65	240.07	2.13
-29.5	239.01	-2.75	239.01	2.21
-31.3	238.00	-3.02	238.00	2.42
Measurements:nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)

nsaskyrad20sC1.a0:
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)


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DQRID : D060630.37
Start DateStart TimeEnd DateEnd Time
11/04/2004030012/21/20051853
Subject:
NSA/SKYRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:nsaskyrad60sC1.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:nsaskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)


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DQRID : D060724.2
Start DateStart TimeEnd DateEnd Time
05/08/1999000008/05/19990000
05/08/2000000008/05/20000000
05/08/2001000008/05/20010000
05/08/2002000008/05/20020000
05/08/2003000008/05/20030000
05/08/2004000008/05/20040000
05/08/2005000008/05/20050000
05/08/2006000008/05/20060000
Subject:
NSA/SKYRAD/C1 - Summer solstice shading of radiometers
DataStreams:nsaskyrad60sC1.b1
Description:
On and around the summer solstice, the NIP (Direct Normal shortwave measurement) and PSP 
(global hemispheic shortwave measurement) radiometers are shaded by other instruments or 
support structures.  Shading azimuths have been determined for this site.  The radiometer 
mentor suggests not using the data from the NIP and PSP radiometers when the sun is 
within the following azimuth bounds (typically from May 8th to August 5th of each year):
Instrmt Obstruction     AzStart     AzEnd     
NIP     rad table       346         358
NIP     met tower       13          15
PSP     mfrsr           6           16
Measurements:nsaskyrad60sC1.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • NIP maximum(nip_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • NIP standard deviation(nip_sd)
  • NIP minimum(nip_min)
  • PSP1 unshaded minimum(psp1_min)
  • PSP shaded maximum(psps_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • NIP mean(nip_mean)
  • PSP shaded minimum(psps_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • PSP shaded mean(psps_mean)
  • PSP1 unshaded maximum(psp1_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • PSP1 unshaded standard deviation(psp1_sd)
  • PSP shaded standard deviation(psps_sd)
  • PSP1 unshaded mean(psp1_mean)


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DQRID : D981212.1
Start DateStart TimeEnd DateEnd Time
12/09/1998000012/12/19982359
Subject:
NSA/SKYRAD - Barrow SKYRAD PIRD Misconfiguration 12/9 - 12/12/98
DataStreams:nsaskyrad20sC1.a1, nsaskyrad60sC1.a1
Description:
The PIRD was incorrectly set from 12/9/98 to 12/12/98 that resulted in an 
error of approximately 3.7% (was set to 243902 instead of 235294).
Measurements:nsaskyrad20sC1.a1:
  • east longitude for all the input platforms.(lon)
  • Instantaneous UVB temperature(uvb_temp)
  • Instantaneous UVB uncorrected irradiance(uvb_uncorr_irradiance)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Instantaneous PIR2 uncorrected irradiance(pir2_uncorr_irradiance)
  • Instantaneous PIR1 uncorrected irradiance(pir1_uncorr_irradiance)
  • Instantaneous PIR2 case thermistor(pir2_case_therm)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous PIR2 dome thermistor(pir2_dome_therm)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)
  • GPS raw data filename(filename)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)

nsaskyrad60sC1.a1:
  • PSP shaded minimum(psps_min)
  • PIR1 unshaded maximum(pir1_max)
  • IRT1 minimum(irt1_min)
  • PSP shaded standard deviation(psps_sd)
  • NIP mean(nip_mean)
  • PIR1 unshaded standard deviation(pir1_sd)
  • NIP maximum(nip_max)
  • Time offset of tweaks from base_time(time_offset)
  • UVB minimum(uvb_min)
  • PSP shaded maximum(psps_max)
  • PIR shaded standard deviation(pirs_sd)
  • PSP shaded mean(psps_mean)
  • Bit data. See details.(bit_data)
  • PIR shaded minimum(pirs_min)
  • IRT1 mean(irt1_mean)
  • Time offset from base_time(base_time)
  • PSP1 unshaded mean(psp1_mean)
  • altitude above sea levelaltunits(alt)
  • PSP1 unshaded minimum(psp1_min)
  • PIR1 unshaded minimum(pir1_min)
  • NIP standard deviation(nip_sd)
  • Internal Logger Temperature(logger_temp)
  • PSP1 unshaded standard deviation(psp1_sd)
  • IRT1 maximum(irt1_max)
  • UVB mean(uvb_mean)
  • PSP1 unshaded maximum(psp1_max)
  • UVB maximum(uvb_max)
  • PIR shaded maximum(pirs_max)
  • PIR1 unshaded mean(pir1_mean)
  • External voltage(external_voltage)
  • IRT1 standard deviation(irt1_sd)
  • Internal voltage(internal_voltage)
  • GPS raw data filename(filename)
  • NIP minimum(nip_min)
  • north latitude for all the input platforms.(lat)
  • PIR shaded mean(pirs_mean)
  • east longitude for all the input platforms.(lon)
  • UVB standard deviation(uvb_sd)


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DQRID : D990108.2
Start DateStart TimeEnd DateEnd Time
03/16/1998190010/28/19981300
Subject:
NSA/SKYRAD/C1 - IRT removed for repair
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.a1
Description:
The instrument was damaged by internal water condensation caused by the 
exterior foam insulation used to keep the IRT above freezing. It was returned 
in July 1998 to the manufacturer for repair.
Measurements:nsaskyrad60sC1.a1:
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)
  • IRT1 mean(irt1_mean)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D990108.3
Start DateStart TimeEnd DateEnd Time
10/28/1998130011/21/19981840
Subject:
NSA/SKYRAD/C1 - IRT insufficiently insulated
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.a1
Description:
IRT was reinstalled with insufficient insulation to maintain an
internal reference temperature above 0 degrees C.
Measurements:nsaskyrad60sC1.a1:
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)
  • IRT1 mean(irt1_mean)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D990108.4
Start DateStart TimeEnd DateEnd Time
12/03/1998000012/10/19981400
Subject:
NSA/SKYRAD/C1 - IRT insufficiently insulated
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.a1
Description:
IRT was reinstalled with insufficient insulation to maintain an
internal reference temperature above 0 degrees C.
Measurements:nsaskyrad60sC1.a1:
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)
  • IRT1 mean(irt1_mean)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D990108.5
Start DateStart TimeEnd DateEnd Time
11/21/1998180012/03/19980000
Subject:
NSA/SKYRAD/C1 - IRT removed from service
DataStreams:nsaskyradC1.00, nsaskyrad60sC1.a1
Description:
Instrument was removed to check performance.
Measurements:nsaskyrad60sC1.a1:
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)
  • IRT1 mean(irt1_mean)

nsaskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D990924.2
Start DateStart TimeEnd DateEnd Time
02/14/1998013012/21/20001925
Subject:
NSA/SKYRAD/C1 - IRT insufficiently heated
DataStreams:nsaskyrad60sC1.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:nsaskyrad60sC1.a1:
  • IRT1 maximum(irt1_max)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)
  • IRT1 mean(irt1_mean)


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END OF DATA