Data Quality Reports for Session: 138218 User: mabrunke Completed: 10/21/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D021111.1NSA/SKYRAD/C1 - Unshaded PIR data unreasonablensaskyrad60sC1.a1
D021111.14NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1
D021111.16NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1
D021111.17NSA/SKYRAD/C1 - Unshaded and Shaded PIR data badnsaskyrad60sC1.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
D030510.2NSA/SKYRAD/C1 - IRT measurements during precipitation eventsnsaskyrad60sC1.a1
D041027.8NSA/MFR10M/C1 - No data collected during winternsamfr10mC1.a0, nsamfr10mC1.b1
D080825.1NSA/SKYRAD/C1 - IRT signal biasnsaskyrad60sC1.a1
D990924.2NSA/SKYRAD/C1 - Reprocess: IRT insufficiently heatednsaskyrad60sC1.a1


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_sd
  • pir1_max
  • pir1_min
  • pir1_mean

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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:
  • pirs_min
  • pirs_mean
  • pirs_max
  • pirs_sd

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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:
  • pirs_min
  • pirs_mean
  • pirs_max
  • pirs_sd

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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:
  • pirs_min
  • pir1_sd
  • pir1_max
  • pir1_min
  • pirs_mean
  • pirs_max
  • pirs_sd
  • pir1_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:
  • pirs_min
  • pir1_sd
  • pir1_max
  • pir1_min
  • pirs_mean
  • pirs_max
  • pirs_sd
  • pir1_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:
  • pirs_min
  • pirs_mean
  • pirs_max
  • pirs_sd

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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_sd
  • pir1_max
  • pir1_min
  • 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_sd
  • pir1_max
  • pir1_min
  • pir1_mean

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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_ir_temp_max
  • sky_ir_temp_std
  • sky_ir_temp_min
  • IR Brightness Temperature(sky_ir_temp)

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DQRID : D041027.8
Start DateStart TimeEnd DateEnd Time
11/16/1998233603/15/19991858
11/18/1999021302/03/20000119
11/01/2000184903/13/20010249
11/08/2001010603/14/20020105
11/07/2002230204/17/20030002
11/18/2003190304/01/20042002
11/08/2004230202/18/20051802
11/29/2005180203/15/20060002
11/20/2006230203/26/20071605
10/30/2007200003/06/20081502
Subject:
NSA/MFR10M/C1 - No data collected during winter
DataStreams:nsamfr10mC1.a0, nsamfr10mC1.b1
Description:
The sun does not rise above the horizon at the NSA sites between
November and January each year.  During this time period, the MFR
instruments are removed and returned to PNNL for maintenance
and calibration.  The instruments are generally re-installed in
March.
Measurements:nsamfr10mC1.b1:
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • logger_volt
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • head_temp
  • callang_flags
  • cosine_solar_zenith_angle
  • time_offset
  • time
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • alt
  • lon
  • base_time
  • 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
  • lat
nsamfr10mC1.a0:
  • time_offset
  • head_temp
  • lat
  • time
  • 25 meter Broadband Upwelling Hemispheric Irradiance(up_hemisp_broadband)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
  • 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
  • 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
  • callang_flags
  • lon
  • alt
  • base_time
  • logger_volt

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DQRID : D080825.1
Start DateStart TimeEnd DateEnd Time
12/09/1998033006/17/19992327
Subject:
NSA/SKYRAD/C1 - IRT signal bias
DataStreams:nsaskyrad60sC1.a1
Description:
Additional heat tape that was installed around the IRT appears to have produced a negative 
bias of about 10 deg (at a sky temperature of -30C). This was corrected when the heat 
tape was replaced with thermostatically-controlled 75W heaters (that were still 
insufficient in maintaining the IRT above freezing - D990924.2).
Measurements:nsaskyrad60sC1.a1:
  • irt1_mean
  • irt1_min
  • irt1_max

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DQRID : D990924.2
Start DateStart TimeEnd DateEnd Time
02/14/1998013012/21/20001925
Subject:
NSA/SKYRAD/C1 - Reprocess: 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.

Data will be reprocessed, but users can correct data using the following correction 
factor:

If T_reference < -5?C, then

  IRT_corrected = (IRT_original - 32.993K)/0.87238

where T_reference can be estimated with the ambient temperature (e.g. 
inst_down_long_hemisp_dome_temp or inst_down_long_dome_temp)
Measurements:nsaskyrad60sC1.a1:
  • irt1_mean
  • irt1_min
  • irt1_sd
  • irt1_max

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