Data Quality Reports for Session: 126836 User: kcwang Completed: 03/18/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040212.6SGP/SWATS/E7 - Sensor failure, 35cm EsgpswatsE7.b1
D040714.1SGP/SWATS/E7 - Missing DatasgpswatsE7.b1
D081218.1SGP/SWATS/E7 - Soil temperature irregular, 125cm EsgpswatsE7.b1


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:
  • Volumetric Water Content, East Profile(watcont_E)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Soil Temperature, East Profile(tsoil_E)

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DQRID : D040714.1
Start DateStart TimeEnd DateEnd Time
10/16/1997100711/26/19971505
06/26/2000060707/06/20001507
01/28/2002230701/30/20020007
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(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Sensor Temperature Rise, East Profile(trise_E)
  • Volumetric Water Content, East Profile(watcont_E)
  • Soil Water Potential, West Profile(soilwatpot_W)
  • Reference Thermistor Temperature(tref)
  • Dummy altitude for Zeb(alt)
  • Soil Temperature, West Profile(tsoil_W)
  • West profile sensor serial numbers(serial_numbers_W)
  • lat(lat)
  • East profile sensor serial numbers(serial_numbers_E)
  • depth(depth)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Soil Temperature, East Profile(tsoil_E)
  • base time(base_time)
  • Volumetric Water Content, West Profile(watcont_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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