Data Quality Reports for Session: 150338 User: ql_data Completed: 05/22/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070117.1NSA/GVR/C1 - Missing datansagvrC1.b1, nsagvrC1.a0, nsagvrC1.00
D070515.2NSA/GVR/C1 - Instrument calibrationnsagvrC1.a0, nsagvrC1.b1
D070710.3NSA/GVR/C1 - Temperature sensor wire brokennsagvrC1.a0, nsagvrC1.b1
D070713.1NSA/GVR/C1 - Incorrect auxiliary measurementsnsagvrC1.a0, nsagvrC1.b1
D071214.1NSA/GVR/C1 - Incorrect ambient temperature readingsnsagvrC1.a0, nsagvrC1.b1
D100809.2NSA/GVR/C1 - Saturated brightness temperaturensagvrC1.a0, nsagvrC1.b1, nsagvrrawC1.00
D100909.2NSA/GVR/C1 - Saturated brightness temperaturesnsagvrC1.a0, nsagvrC1.b1
D110210.1NSA/GVRP/C1 - Reprocessed: Calibration driftnsagvrpC1.b1
D110210.2NSA/GVRP/C1 - Missing datansagvrpC1.b1
D110304.2NSA/GVRP/C1 - Reprocessed: Calibration driftnsagvrpC1.b1
D110405.1NSA/GVRP/C1 - Incorrect surface temp and RHnsagvrpC1.b1
D110615.1NSA/GVRP/C1 - Reprocess: Calibration driftnsagvrpC1.b1
D110927.3NSA/GVRP/C1 - High noise in the datansagvrpC1.b1
D120418.2NSA/GVRP/C1 - Reprocess: Radiometer CalibrationnsagvrpC1.b1
D120423.2NSA/GVRP/C1 - Incorrect surface temperature and humiditynsagvrpC1.b1
D121015.1NSA/GVR/C1 - Saturated brightness temperaturesnsagvrC1.a0, nsagvrC1.b1
D121217.1NSA/GVRP/C1 - Calibration driftnsagvrpC1.b1


DQRID : D070117.1
Start DateStart TimeEnd DateEnd Time
06/30/2012120007/02/20121700
04/14/2012210004/14/20121353
03/03/2012080003/05/20122000
02/26/2012150002/28/20121700
01/11/2007150001/15/20071600
04/13/2007212204/18/20071325
04/30/2007202005/02/20071256
06/09/2008050006/20/20081852
11/10/2008190311/14/20081616
08/03/2009170010/26/20091800
05/08/2010220005/11/20101800
09/27/2010030010/01/20102200
10/08/2010150010/11/20101900
12/25/2010080001/03/20112300
01/12/2011060001/15/20111700
04/26/2011050005/02/20111804
05/17/2011030005/19/20111900
06/18/2011090006/20/20111900
07/09/2011230007/11/20112300
12/10/2011040012/14/20112000
Subject:
NSA/GVR/C1 - Missing data
DataStreams:nsagvrC1.b1, nsagvrC1.a0, nsagvrC1.00
Description:
Data are missing and unrecoverable.
Measurements:nsagvrC1.b1:
  • 183.3 +/- 14 GHz sky brightness temperature(tbsky14)
  • temp_noise_diode
  • temp_ext
  • tbsky3u
  • time
  • time_offset
  • lat
  • lon
  • temp_hot2
  • temp_hot1
  • base_time
  • tbsky14u
  • tbsky1u
  • temp_antenna_feed_horn
  • temp_warm
  • alt
  • 183.3 +/- 1 GHz sky brightness temperature(tbsky1)
  • temp_thermoelectric_cooling_plate
  • 183.3 +/- 3 GHz sky brightness temperature(tbsky3)
  • 183.3 +/- 7 GHz sky brightness temperature(tbsky7)
  • tbsky7u
  • temp_component_plate
nsagvrC1.a0:
  • warm1
  • warm3
  • sky1
  • sky3
  • warm7
  • time_offset
  • sky7
  • ml3
  • ml7
  • pos
  • hot14
  • temp_component_plate
  • temp_warm
  • lon
  • ns14
  • base_time
  • warm14
  • sky14
  • alt
  • time
  • hot7
  • temp_ext
  • hot1
  • hot3
  • ml14
  • temp_thermoelectric_cooling_plate
  • temp_hot1
  • ns7
  • temp_hot2
  • ns1
  • ns3
  • lat
  • temp_antenna_feed_horn
  • type
  • ml1
  • temp_noise_diode
nsagvrC1.00:
  • Raw data stream - documentation not supported

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DQRID : D070515.2
Start DateStart TimeEnd DateEnd Time
05/11/2007174105/17/20070000
Subject:
NSA/GVR/C1 - Instrument calibration
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
During the period of time specified, the instrument was undergoing calibration. The 
antenna pointed constantly to a hot load placed on the instrument window. All brightness 
temperatures during this time have temperatures > 300 K.
Measurements:nsagvrC1.b1:
  • 183.3 +/- 14 GHz sky brightness temperature(tbsky14)
  • temp_noise_diode
  • temp_ext
  • tbsky3u
  • time
  • time_offset
  • lat
  • lon
  • temp_hot2
  • temp_hot1
  • base_time
  • tbsky14u
  • tbsky1u
  • temp_antenna_feed_horn
  • temp_warm
  • alt
  • 183.3 +/- 1 GHz sky brightness temperature(tbsky1)
  • temp_thermoelectric_cooling_plate
  • 183.3 +/- 3 GHz sky brightness temperature(tbsky3)
  • 183.3 +/- 7 GHz sky brightness temperature(tbsky7)
  • tbsky7u
  • temp_component_plate
nsagvrC1.a0:
  • warm1
  • warm3
  • sky1
  • sky3
  • warm7
  • time_offset
  • sky7
  • ml3
  • ml7
  • pos
  • hot14
  • temp_component_plate
  • temp_warm
  • lon
  • ns14
  • base_time
  • warm14
  • sky14
  • alt
  • time
  • hot7
  • temp_ext
  • hot1
  • hot3
  • ml14
  • temp_thermoelectric_cooling_plate
  • temp_hot1
  • ns7
  • temp_hot2
  • ns1
  • ns3
  • lat
  • temp_antenna_feed_horn
  • type
  • ml1
  • temp_noise_diode

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DQRID : D070710.3
Start DateStart TimeEnd DateEnd Time
06/30/2007190007/13/20072200
Subject:
NSA/GVR/C1 - Temperature sensor wire broken
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
The temp_ext temperatures were occasionally spiking to very large values. Comparisons with 
the co-located 2m METTWR suggest the GVR exterior temperatures were not reporting 
correctly.  Site ops found the temperature sensor had a broken wire and repaired it 7/13.
Measurements:nsagvrC1.b1:
  • temp_ext
nsagvrC1.a0:
  • temp_ext

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DQRID : D070713.1
Start DateStart TimeEnd DateEnd Time
06/16/2007170006/19/20071700
Subject:
NSA/GVR/C1 - Incorrect auxiliary measurements
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
Between 6/16 and 6/19 there was a software problem and the auxiliary measurements all were 
reading constant values. The brightness temperature measurements do not appear to be 
affected.
One of the incorrect measurements that may affect the use of the data is the surface 
temperature. This measurement should be disregarded. 

Measurements from a different instrument (such as the MWR) can be used to replace the GVR 
readings.
Measurements:nsagvrC1.b1:
  • temp_thermoelectric_cooling_plate
  • temp_hot2
  • temp_component_plate
  • temp_hot1
  • temp_noise_diode
  • temp_antenna_feed_horn
  • temp_warm
  • temp_ext
nsagvrC1.a0:
  • warm1
  • temp_hot1
  • warm3
  • temp_warm
  • temp_hot2
  • warm7
  • hot7
  • temp_ext
  • hot1
  • temp_antenna_feed_horn
  • hot3
  • temp_noise_diode
  • hot14
  • temp_component_plate
  • temp_thermoelectric_cooling_plate
  • warm14

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DQRID : D071214.1
Start DateStart TimeEnd DateEnd Time
09/03/2007200005/22/20082200
Subject:
NSA/GVR/C1 - Incorrect ambient temperature readings
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
The ambient temperature readings are incorrect. The temperature sensor was replaced on 
5/13, however the temperature readings were incorrect until 5/22 due to problems with 
corrosion in the cables
Measurements:nsagvrC1.b1:
  • temp_ext
nsagvrC1.a0:
  • temp_ext

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DQRID : D100809.2
Start DateStart TimeEnd DateEnd Time
07/16/2010120007/22/20102000
Subject:
NSA/GVR/C1 - Saturated brightness temperature
DataStreams:nsagvrC1.a0, nsagvrC1.b1, nsagvrrawC1.00
Description:
Beginning 7/16 all sky temperature data become nearly equal and abnormally constant. The 
sky temperature data returned to normal on 7/22 ~20:00 UTC. The saturated brightness 
temperatures were probably due to water or dew deposit on the window.
Measurements:nsagvrC1.b1:
  • 183.3 +/- 1 GHz sky brightness temperature(tbsky1)
  • 183.3 +/- 14 GHz sky brightness temperature(tbsky14)
  • 183.3 +/- 3 GHz sky brightness temperature(tbsky3)
  • 183.3 +/- 7 GHz sky brightness temperature(tbsky7)
  • tbsky14u
  • tbsky7u
  • tbsky1u
  • tbsky3u
nsagvrrawC1.00:
  • AVHRR satellite images for Darwin from BOM (RAW)(raw)
nsagvrC1.a0:
  • sky14
  • sky1
  • sky3
  • sky7

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DQRID : D100909.2
Start DateStart TimeEnd DateEnd Time
08/26/2010120008/30/20101500
Subject:
NSA/GVR/C1 - Saturated brightness temperatures
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
Brightness temperatures are saturated probably because of water on the radome.  Water 
vapor retrievals are affected as well.
Measurements:nsagvrC1.b1:
  • 183.3 +/- 1 GHz sky brightness temperature(tbsky1)
  • 183.3 +/- 14 GHz sky brightness temperature(tbsky14)
  • 183.3 +/- 3 GHz sky brightness temperature(tbsky3)
  • 183.3 +/- 7 GHz sky brightness temperature(tbsky7)
  • tbsky1u
  • tbsky14u
  • tbsky3u
  • tbsky7u
nsagvrC1.a0:
  • sky14
  • sky1
  • sky3
  • sky7

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DQRID : D110210.1
Start DateStart TimeEnd DateEnd Time
11/01/2010000001/19/20111400
Subject:
NSA/GVRP/C1 - Reprocessed: Calibration drift
DataStreams:nsagvrpC1.b1
Description:
The most transparent channels (170-176 GHz) exhibited signs of a drift in the calibration. 
The radiometer was calibrated on Jan 17 2011.  Data for 20101101-20110117 were 
recalibrated and reprocessed.  The reprocessed data were archived in May 2011.  

After the calibration there was a problem restarting the software. The software was 
successfully restarted on Jan 19.
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D110210.2
Start DateStart TimeEnd DateEnd Time
10/13/2011220003/02/20121400
01/17/2011190001/19/20111400
04/27/2011170705/02/20111700
Subject:
NSA/GVRP/C1 - Missing data
DataStreams:nsagvrpC1.b1
Description:
Data are missing and unrecoverable.
Measurements:nsagvrpC1.b1:
  • lat
  • elevation
  • Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)
  • Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
  • time
  • Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)
  • time_offset
  • lon
  • alt
  • frequency
  • surfaceRainFlag
  • blackBodyTemperature
  • base_time
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D110304.2
Start DateStart TimeEnd DateEnd Time
01/24/2011230003/04/20110000
Subject:
NSA/GVRP/C1 - Reprocessed: Calibration drift
DataStreams:nsagvrpC1.b1
Description:
On Jan 24 2011 there was a power outage that caused another drift in the calibration. The 
radiometer was put in scanning mode to collect tip data. The tip data were processed for 
the most transparent channels. New calibration values were uploaded and took effect on 
March 4 2011.

Data for 20110124-20110304 were recalibrated and reprocessed.  The reprocessed data were 
archived in May 2011.
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D110405.1
Start DateStart TimeEnd DateEnd Time
03/23/2011053803/24/20112000
Subject:
NSA/GVRP/C1 - Incorrect surface temp and RH
DataStreams:nsagvrpC1.b1
Description:
The instrument experienced a period of missing data on 3/23/2011 from 05:38:30 GMT until 
08:21:44 GMT.  When data returned the surface temperature and surface relative humidity 
were incorrect.  Surface temperature flat-lined at 999.990 K and surface RH flat-lined at 
999.990%.  

On 3/24 the sensor was removed and cleaned resolving the problem.
Measurements:nsagvrpC1.b1:
  • Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
  • Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)

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DQRID : D110615.1
Start DateStart TimeEnd DateEnd Time
05/02/2011170005/19/20110000
Subject:
NSA/GVRP/C1 - Reprocess: Calibration drift
DataStreams:nsagvrpC1.b1
Description:
After the power outage there was a shift in the calibration of the instrument. Data will 
be reprocessed with updated coefficients.
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D110927.3
Start DateStart TimeEnd DateEnd Time
08/01/2011000010/13/20112200
Subject:
NSA/GVRP/C1 - High noise in the data
DataStreams:nsagvrpC1.b1
Description:
All channels of the radiometer became suddenly very noisy. The receiver noise figure was 
computed and was found anomalous. Data are unusable during the indicated times. On 10/13 
the instrument was removed and will be sent to the vendor for repairs.
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D120418.2
Start DateStart TimeEnd DateEnd Time
03/02/2012140004/13/20121816
Subject:
NSA/GVRP/C1 - Reprocess: Radiometer Calibration
DataStreams:nsagvrpC1.b1
Description:
The radiometer was calibrated with LN2 on 4/13/2012. Data between 3/2 and 4/13 will be 
recalibrated with the most current coefficients.
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D120423.2
Start DateStart TimeEnd DateEnd Time
03/02/2012140804/19/20120020
Subject:
NSA/GVRP/C1 - Incorrect surface temperature and humidity
DataStreams:nsagvrpC1.b1
Description:
Surface Relative Humidity and Temperate values are incorrect or missing between 3/2/2012 
and 4/19/2012
Measurements:nsagvrpC1.b1:
  • Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
  • Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)

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DQRID : D121015.1
Start DateStart TimeEnd DateEnd Time
09/23/2012000009/27/20122300
Subject:
NSA/GVR/C1 - Saturated brightness temperatures
DataStreams:nsagvrC1.a0, nsagvrC1.b1
Description:
The brightness temperatures were saturated between 9/23 and 9/27. Data should be 
disregarded.
Measurements:nsagvrC1.b1:
  • 183.3 +/- 1 GHz sky brightness temperature(tbsky1)
  • 183.3 +/- 14 GHz sky brightness temperature(tbsky14)
  • 183.3 +/- 3 GHz sky brightness temperature(tbsky3)
  • 183.3 +/- 7 GHz sky brightness temperature(tbsky7)
  • tbsky1u
  • tbsky14u
  • tbsky3u
  • tbsky7u
nsagvrC1.a0:
  • sky14
  • sky1
  • sky3
  • sky7

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DQRID : D121217.1
Start DateStart TimeEnd DateEnd Time
10/10/2012000011/15/20122000
Subject:
NSA/GVRP/C1 -  Calibration drift
DataStreams:nsagvrpC1.b1
Description:
The radiometer showed a progressive drift in calibration starting approximately on 
10/10/2012 and becoming worst in November. The instrument was calibrated with liquid nitrogen on 
11/15/2012
Measurements:nsagvrpC1.b1:
  • Microwave brightness temperature(brightnessTemperature)

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END OF DATA