Data Quality Reports for Session: 142190 User: twford Completed: 04/30/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040126.5SGP/SWATS/E8 - Sensor failure, 15cm WsgpswatsE8.b1
D040212.6SGP/SWATS/E7 - Sensor failure, 35cm EsgpswatsE7.b1
D040213.2SGP/SWATS/E8 - Sensor failure, 15cm EsgpswatsE8.b1
D040714.1SGP/SWATS/E7 - Missing DatasgpswatsE7.b1
D060531.6SGP/SWATS/E9 - Incorrect reference temperaturesgpswatsE9.b1
D081024.3SGP/SWATS/E7 - Sensor failure, 35cm EsgpswatsE7.b1
D081024.4SGP/SWATS/E8 - Sensor failure, 35cm WsgpswatsE8.b1
D081218.1SGP/SWATS/E7 - Soil temperature irregular, 125cm EsgpswatsE7.b1
D090807.1SGP/SWATS/E8 - Sensor failure, 60cm WsgpswatsE8.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 : D040212.6
Start DateStart TimeEnd DateEnd Time
01/06/2004040001/06/20040515
01/27/2004130002/08/20041830
06/17/2004170006/23/20041900
12/23/2004070012/24/20041130
Subject:
SGP/SWATS/E7 - Sensor failure, 35cm E
DataStreams:sgpswatsE7.b1
Description:
The 35cm East profile data spiked out of range on 20040106. Soil temperature is incorrect 
at 0407 GMT, and all 35cm E data are incorrect at 0407 and 0507 GMT.

The 35cm East profile sensor failed on 20040127 around 1300 GMT. All data from this sensor 
are incorrect or missing until 20040208.

The 35cm East temperature rise readings were noisy and inconsistent with the rest of the 
data 20040317-20040623. This also caused the matric potential and water content data to be 
suspect.

The 35cm East soil temperature measurements were incorrect beginning 20041223 to 9:07 on 
12/24. Temperature rise, soil-water potential, and water content are incorrect from from 
the same start time to 11:07 GMT on 12/24.
Measurements:sgpswatsE7.b1:
  • Sensor Temperature Rise, East Profile(trise_e)
  • Soil Water Potential, East Profile(soilwatpot_e)
  • fwi_e
  • Soil Temperature, East Profile(tsoil_e)
  • trise_ref_e
  • Volumetric Water Content, East Profile(watcont_e)

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DQRID : D040213.2
Start DateStart TimeEnd DateEnd Time
02/13/2004070002/14/20040700
Subject:
SGP/SWATS/E8 - Sensor failure, 15cm E
DataStreams:sgpswatsE8.b1
Description:
The temperature rise readings from the 15-cm depth on the east profile are incorrect. This 
also causes the matric potential and water content data to be incorrect.
Measurements:sgpswatsE8.b1:
  • Volumetric Water Content, East Profile(watcont_E)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Water Potential, East Profile(soilwatpot_E)

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DQRID : D040714.1
Start DateStart TimeEnd DateEnd Time
06/26/2000060707/06/20001507
01/28/2002230701/30/20020007
10/16/1997100711/26/19971505
01/30/2002130702/08/20021907
03/14/2002230803/16/20020007
05/08/2002060805/21/20021507
10/02/2002180710/04/20021707
08/29/2003040709/05/20031708
10/07/2003170710/23/20031723
11/20/2003190712/02/20032032
04/24/2004020704/30/20041538
06/08/2004190706/17/20041752
07/04/2004110707/09/20041709
10/31/2004200711/03/20040008
01/04/2005230701/11/20052009
06/15/2005220706/28/20051920
06/30/2007060708/10/20071907
11/02/2007160711/09/20071907
11/23/2007180711/27/20071950
Subject:
SGP/SWATS/E7 - Missing Data
DataStreams:sgpswatsE7.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpswatsE7.b1:
  • lon
  • time_offset
  • Sensor Temperature Rise, East Profile(trise_E)
  • Volumetric Water Content, East Profile(watcont_E)
  • Soil Water Potential, West Profile(soilwatpot_W)
  • tref
  • Soil Temperature, West Profile(tsoil_W)
  • alt
  • serial_numbers_W
  • lat
  • serial_numbers_E
  • Sensor Temperature Rise, West Profile(trise_W)
  • depth
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Soil Temperature, East Profile(tsoil_E)
  • base_time
  • Volumetric Water Content, West Profile(watcont_W)

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DQRID : D060531.6
Start DateStart TimeEnd DateEnd Time
04/24/2006160006/01/20061600
Subject:
SGP/SWATS/E9 - Incorrect reference temperature
DataStreams:sgpswatsE9.b1
Description:
The reference temperature was incorrect resulting in incorrect results for soil moisture 
measurements.
Measurements:sgpswatsE9.b1:
  • Volumetric Water Content, East Profile(watcont_E)
  • tref
  • Soil Water Potential, West Profile(soilwatpot_W)
  • Volumetric Water Content, West Profile(watcont_W)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, West Profile(trise_W)

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DQRID : D081024.3
Start DateStart TimeEnd DateEnd Time
12/08/2006200011/14/20111700
Subject:
SGP/SWATS/E7 - Sensor failure, 35cm E
DataStreams:sgpswatsE7.b1
Description:
The 35-cm East sensor had several problems before failing permanently in 2007:

20061208.2000-20070306.2000: temperature rise reported values of -9999, and soil 
temperature reported abnormally high temperature values.  

20070813.1200-20070912.1300: all variables reported as -9999, including soil temperature.  
A very small number of soil temperature values were reported as unusually high 
temperature values after 09/10/07.

20070912.1300-20070915.1600:  incorrect values of temperature rise reported (near 0 C), 
and soil temperature values incorrect and unusually high.

20071110.0000-20071115.2300:  incorrect values of temperature rise reported near 0 C or 
unusually low.  Values of soil temperature OK.  

20071128.0000-->:  Except for two very brief recoveries (on the order of a few days), all 
35cm E variables are reported as -9999.
Measurements:sgpswatsE7.b1:
  • Sensor Temperature Rise, East Profile(trise_e)
  • Soil Water Potential, East Profile(soilwatpot_e)
  • fwi_e
  • Soil Temperature, East Profile(tsoil_e)
  • trise_ref_e
  • Volumetric Water Content, East Profile(watcont_e)

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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 : D081218.1
Start DateStart TimeEnd DateEnd Time
10/28/2008190002/04/20092025
Subject:
SGP/SWATS/E7 - Soil temperature irregular, 125cm E
DataStreams:sgpswatsE7.b1
Description:
The 125 cm E sensor was demonstrating temporal irregularities in its soil temperature 
measurements.  These irregularities consisted of dips and increases of around 2-4 C that 
typically started around 14:00 or 15:00 GMT on most days. On other days the values appeared 
somewhat noisy throughout the day. In both cases, the temporal changes did not compare 
well with the other sensors installed at E7.  

A bad fiber optic cable was replaced.
Measurements:sgpswatsE7.b1:
  • Soil Temperature, East Profile(tsoil_E)

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DQRID : D090807.1
Start DateStart TimeEnd DateEnd Time
07/30/2009020011/10/20091300
Subject:
SGP/SWATS/E8 - Sensor failure, 60cm W
DataStreams:sgpswatsE8.b1
Description:
At 2:00 GMT on 07/30 all measurements from the 60 cm W sensor began reporting as -9999. 
The sensor has failed. 

This EF site is scheduled to be decommissioned in the near future.

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

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