Data Quality Reports for Session: 141980 User: twford Completed: 04/16/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040615.6SGP/SWATS/E12 - Time driftsgpswatsE12.b1, sgpswatspcpE12.b1
D050503.6SGP/SWATS/E12 - Reprocess: Changed Depth DimensionsgpswatsE12.b1
D060802.1SGP/SWATS/E12 - Incorrect soil moisturesgpswatsE12.b1
D071026.2SGP/SWATS/E12 - Reprocess: Incorrect calibrationssgpswatsE12.b1


DQRID : D040615.6
Start DateStart TimeEnd DateEnd Time
02/19/2004221203/10/20042247
Subject:
SGP/SWATS/E12 - Time drift
DataStreams:sgpswatsE12.b1, sgpswatspcpE12.b1
Description:
The time synchronization server stopped working on Feb. 19th at 22:12:16 GMT.  The clock 
was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times for 
observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds on 
March 10th.
Measurements:sgpswatspcpE12.b1:
  • Precipitation, total(precip)
  • time
  • base_time
  • time_offset
sgpswatsE12.b1:
  • tref
  • Soil Temperature, West Profile(tsoil_W)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Volumetric Water Content, West Profile(watcont_W)
  • time_offset
  • Sensor Temperature Rise, East Profile(trise_E)
  • Soil Water Potential, West Profile(soilwatpot_W)
  • base_time
  • Volumetric Water Content, East Profile(watcont_E)
  • Soil Temperature, East Profile(tsoil_E)

Back To Table of Contents

DQRID : D050503.6
Start DateStart TimeEnd DateEnd Time
07/13/1996000004/19/20052359
Subject:
SGP/SWATS/E12 - Reprocess: Changed Depth Dimension
DataStreams:sgpswatsE12.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:sgpswatsE12.b1:
  • depth

Back To Table of Contents

DQRID : D060802.1
Start DateStart TimeEnd DateEnd Time
07/12/2006000008/15/20061800
Subject:
SGP/SWATS/E12 - Incorrect soil moisture
DataStreams:sgpswatsE12.b1
Description:
Temperature rise values were way to high (~40 deg C).  Water potential is calculated from 
a rise (and subsequent drop) in temperature in the sensor that is normally ~1-5 degrees 
C.  When the temperature rise is too high, the soil moisture data is dubious at best and 
unusable at worst.  Since this "out-of-bounds" t_rise is so high, the soil moisture data 
are practically unusable.

Soil temperature measurements were not affected.
Measurements:sgpswatsE12.b1:
  • Soil Water Potential, West Profile(soilwatpot_W)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Volumetric Water Content, West Profile(watcont_W)
  • Volumetric Water Content, East Profile(watcont_E)
  • Sensor Temperature Rise, East Profile(trise_E)

Back To Table of Contents

DQRID : D071026.2
Start DateStart TimeEnd DateEnd Time
08/28/2007210011/06/20071700
Subject:
SGP/SWATS/E12 - Reprocess: Incorrect calibrations
DataStreams:sgpswatsE12.b1
Description:
Incorrect data configuration program was loaded on logger resulting in incorrect 
coefficients applied.  Data will be reprocessed with correct coefficients.
Measurements:sgpswatsE12.b1:
  • tref
  • Soil Temperature, West Profile(tsoil_W)
  • Soil Water Potential, West Profile(soilwatpot_W)
  • Soil Water Potential, East Profile(soilwatpot_E)
  • Sensor Temperature Rise, West Profile(trise_W)
  • Volumetric Water Content, West Profile(watcont_W)
  • Volumetric Water Content, East Profile(watcont_E)
  • Soil Temperature, East Profile(tsoil_E)
  • Sensor Temperature Rise, East Profile(trise_E)

Back To Table of Contents


END OF DATA