Data Quality Reports for Session: 102534 User: chubarova Completed: 11/07/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D021111.8NSA/SKYRAD/C1 - Noise in Unshaded PIR datansaskyrad60sC1.a1, nsaskyrad60sC1.b1
D030821.2NSA/SKYRAD/C1 - IRT incorrect min/max valuensaskyrad60sC1.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


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)

Back To Table of Contents

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)

Back To Table of Contents

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)

Back To Table of Contents


END OF DATA