Data Quality Reports for Session: 100583 User: secora Completed: 07/18/2006


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
D021111.12NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.13NSA/SKYRAD/C1 - Shaded PIR data unreasonablensaskyrad60sC1.a1, nsaskyrad60sC1.b1
D021111.20NSA/SKYRAD/C1 - PIR data suspectnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
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
D021213.2NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnightnsaskyrad60sC1.a1, nsaskyrad60sC1.b1
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
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
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


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 : D021111.12
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 : D021111.20
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 : D021111.6
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 : 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 : D021213.4
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 : 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)
  • Logger panel 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)


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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 : 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)
  • Logger panel 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 forecast initialization time(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)
  • Logger panel 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 forecast initialization time(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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END OF DATA