Data Quality Reports for Session: 140585 User: lijun1ljr Completed: 02/14/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D080307.1SGP/ORG/C1 - Frost on lenssgporgC1.b1
D080321.1SGP/ORG/C1 - Lens heater failuresgporgC1.b1
D080905.3SGP/ORG/C1 - Erroneous precipitation observationssgporgC1.b1
D090223.6SGP/ORG/C1 - False precip measurementssgporgC1.b1
D091104.1SGP/ORG/C1 - False reports of precipsgporgC1.b1
D100301.1SGP/ORG/C1 - Incorrect precipitationsgporgC1.b1
D100312.1SGP/ORG/C1 - Snow falsely identified as rainsgporgC1.b1
D110414.1SGP/ORG/C1 - Incorrect precipitation measurementssgporgC1.b1, sgporgC1.00


DQRID : D080307.1
Start DateStart TimeEnd DateEnd Time
02/06/2008000002/06/20082359
Subject:
SGP/ORG/C1 - Frost on lens
DataStreams:sgporgC1.b1
Description:
Frost build up on the instrument lenses caused a faulty precipitation measurement.
Measurements:sgporgC1.b1:
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D080321.1
Start DateStart TimeEnd DateEnd Time
01/01/2008000003/10/20081600
Subject:
SGP/ORG/C1 - Lens heater failure
DataStreams:sgporgC1.b1
Description:
Any measurements made in freezing conditions are suspect due to failure of the lens 
heaters.  Users of the data can use the SMOS E13 data to determine if temperatures below 0 
degrees C occurred.
Measurements:sgporgC1.b1:
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D080905.3
Start DateStart TimeEnd DateEnd Time
07/28/2008000007/28/20081200
Subject:
SGP/ORG/C1 - Erroneous precipitation observations
DataStreams:sgporgC1.b1
Description:
Precipitation observed by the optical rain gauge was not observed by the SMOS tipping 
bucket or by the disdrometer nearby.  The optical rain gauge results should be considered 
erroneous.
Measurements:sgporgC1.b1:
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D090223.6
Start DateStart TimeEnd DateEnd Time
01/15/2009000001/15/20092359
01/23/2009000001/23/20092359
01/26/2009000001/26/20092359
01/27/2009000001/27/20092359
Subject:
SGP/ORG/C1 - False precip measurements
DataStreams:sgporgC1.b1
Description:
False measurements of precipitation occurred due to icing or conditions where the dew 
point temperature became close to the air temperature.
Measurements:sgporgC1.b1:
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D091104.1
Start DateStart TimeEnd DateEnd Time
04/26/2009000010/01/20090000
Subject:
SGP/ORG/C1 - False reports of precip
DataStreams:sgporgC1.b1
Description:
False positive observations occur during foggy periods and the accompanying rain gauges 
should always be consulted.  However, the period covered by this DQR was not foggy and 
false positive readings became an issue.  The instrument was removed for repair in 10/1/2009.
Measurements:sgporgC1.b1:
  • org_car
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D100301.1
Start DateStart TimeEnd DateEnd Time
12/14/2009000012/25/20092359
Subject:
SGP/ORG/C1 - Incorrect precipitation
DataStreams:sgporgC1.b1
Description:
The ORG has difficulty making correct observations of precipitation when the dew point 
temperature is high or when snow occults the sensor.  Snow was definitely the culprit during 
12/24 and 12/25.
Measurements:sgporgC1.b1:
  • org_car
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D100312.1
Start DateStart TimeEnd DateEnd Time
01/28/2010230001/31/20101200
Subject:
SGP/ORG/C1 - Snow falsely identified as rain
DataStreams:sgporgC1.b1
Description:
Snow that obstructed the ORG's sensor was interpreted by the instrument as rain.
Measurements:sgporgC1.b1:
  • org_car
  • Precipitation maximum(precip_max)
  • precip_sd
  • Precipitation mean(precip_mean)
  • Precipitation minimum(precip_min)

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DQRID : D110414.1
Start DateStart TimeEnd DateEnd Time
10/19/2010000010/19/20102359
10/11/2010011510/11/20102359
10/22/2010000010/22/20102359
11/11/2010000011/12/20102359
11/15/2010000011/17/20102359
Subject:
SGP/ORG/C1 - Incorrect precipitation measurements
DataStreams:sgporgC1.b1, sgporgC1.00
Description:
The ORG did not recorded any precip during the time period specified.  Based on 
intercomparison plots with the TBRG at E13 there were precipitation events during this time.
Measurements:sgporgC1.b1:
  • lat
  • org_car
  • time
  • Precipitation maximum(precip_max)
  • lon
  • precip_sd
  • time_offset
  • Precipitation mean(precip_mean)
  • base_time
  • alt
  • Precipitation minimum(precip_min)
sgporgC1.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)

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