Data Quality Reports for Session: 150277 User: denis2611 Completed: 05/21/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040126.5SGP/SWATS/E8 - Sensor failure, 15cm WsgpswatsE8.b1
D050503.8SGP/SWATS/E13 - Reprocess: Changed Depth DimensionsgpswatsE13.b1
D081024.4SGP/SWATS/E8 - Sensor failure, 35cm WsgpswatsE8.b1
D090121.3SGP/SWATS/E16 - Sensor failure, 125cm EsgpswatsE16.b1
D110707.1SGP/SWATS/E15 - Missing datasgpswatsE15.b1
D970711.3SGP/SWATS/E8 - Sensor failure, 15cm WsgpswatsE8.b1
D970711.4SGP/SWATS/E8 - Incorrect soil moisturesgpswatsE8.b1


DQRID : D040126.5
Start DateStart TimeEnd DateEnd Time
06/05/2002050011/10/20091300
Subject:
SGP/SWATS/E8 - Sensor failure, 15cm W
DataStreams:sgpswatsE8.b1
Description:
The temperature rise readings from the 15-cm depth on the west profile are incorrect. This 
also causes the matric potential and water content data to be incorrect.

Instrument removed from service 20091110.
Measurements:sgpswatsE8.b1:
  • Volumetric Water Content, West Profile(watcont_W)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Soil Water Potential, West Profile(soilwatpot_W)

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DQRID : D050503.8
Start DateStart TimeEnd DateEnd Time
02/05/1996000004/19/20052359
Subject:
SGP/SWATS/E13 - Reprocess: Changed Depth Dimension
DataStreams:sgpswatsE13.b1
Description:
The dimension "depth" in the netCDF files was incorrectly reported as 8, and has been 
changed. Newer files with the correct smaller depth dimension do not have extra placeholder 
values and thus are smaller in size.
Measurements:sgpswatsE13.b1:
  • depth

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DQRID : D081024.4
Start DateStart TimeEnd DateEnd Time
07/20/1999170011/10/20091300
Subject:
SGP/SWATS/E8 - Sensor failure, 35cm W
DataStreams:sgpswatsE8.b1
Description:
The sensor installed at 35 cm at the west profile has produced questionable data ince it 
was installed back in 1996.  Once the sensor began to stabilize at 17:00 GMT on 07/20/99, 
it has produced questionable or incorrect values of temperature rise.  From 07/20/99 to 
the present date, 35cm W temperature rise values have stayed within a range of 
approximately 0.8-2.0 C, while the sensor from the 35cm E profile has produced an approximate range 
of 1.5-4.0 C.

In addition, the calibration for this sensor is so bad it is not possible to correct it 
using field data.  The range of temperature rise values produced by this sensor is too 
limited to reliably re-calibrate the instrument.  Under the old ARM calibration for SWATS, 
the calibrated reference temperature change should fall within a range of 1.45-4.00 C (the 
new range is 1.38-3.96 C).  For this sensor, the reference temperature change has fallen 
within an approximate range of 0.2-1.7 C and the calibration is actually adjusting the 
trise measurements in the wrong direction.  

Therefore, all temperature rise, matric potential and water content data 
are all highly suspect from the 35cm W sensor.

The soil temperature data appear to be OK.

Instrument removed from service 20091110.
Measurements:sgpswatsE8.b1:
  • Volumetric Water Content, West Profile(watcont_W)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Soil Water Potential, West Profile(soilwatpot_W)

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DQRID : D090121.3
Start DateStart TimeEnd DateEnd Time
08/26/2001230006/13/20062300
Subject:
SGP/SWATS/E16 - Sensor failure, 125cm E
DataStreams:sgpswatsE16.b1
Description:
The 125cm East sensor reported temperature rise values at or about 0 for the duration of 
the specified period.

Soil temperature data were not affected.
Measurements:sgpswatsE16.b1:
  • Volumetric Water Content, East Profile(watcont_E)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, East Profile(trise_E)

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DQRID : D110707.1
Start DateStart TimeEnd DateEnd Time
08/18/1997090709/09/19971605
01/28/2002230702/10/20021707
03/14/2002230703/16/20020007
12/19/2004130712/23/20042108
07/02/2006120707/05/20061733
10/10/2007160710/23/20071658
10/31/2007170711/06/20072045
05/08/2010090705/13/20101907
09/16/2010010709/21/20101516
05/23/2011210706/14/20111527
06/18/2011040706/27/20111307
Subject:
SGP/SWATS/E15 - Missing data
DataStreams:sgpswatsE15.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpswatsE15.b1:
  • serial_numbers_E
  • Soil Water Potential, East Profile(soilwatpot_E)
  • time_offset
  • Volumetric Water Content, East Profile(watcont_E)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Temperature, West Profile(tsoil_W)
  • depth
  • lat
  • base_time
  • alt
  • tref
  • Soil Water Potential, West Profile(soilwatpot_W)
  • serial_numbers_W
  • Soil Temperature, East Profile(tsoil_E)
  • lon
  • Volumetric Water Content, West Profile(watcont_W)
  • Sensor Temperature Rise, West Profile(trise_W)

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DQRID : D970711.3
Start DateStart TimeEnd DateEnd Time
05/21/1997010706/18/19971950
Subject:
SGP/SWATS/E8 - Sensor failure, 15cm W
DataStreams:sgpswatsE8.b1
Description:
The 15cm West profile sensor was not producing reasonable values of matric potential or 
water content.  Site ops found and tighten a loose wire.
Measurements:sgpswatsE8.b1:
  • Volumetric Water Content, West Profile(watcont_W)
  • Soil Water Potential, West Profile(soilwatpot_W)

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DQRID : D970711.4
Start DateStart TimeEnd DateEnd Time
05/19/1997050706/18/19971950
Subject:
SGP/SWATS/E8 - Incorrect soil moisture
DataStreams:sgpswatsE8.b1
Description:
Sensors in both profiles and at all depths were not being heated properly (temperature 
rise is too small). As a result, all matric potential and water content data are invalid 
also.
Measurements:sgpswatsE8.b1:
  • Volumetric Water Content, East Profile(watcont_E)
  • Volumetric Water Content, West Profile(watcont_W)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Water Potential, West Profile(soilwatpot_W)

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