SGP/SWATS/E1 - Reprocess: Wrong Calibration

Two sensor connections were switched. The East 125-cm sensor was plugged into the East 
85-cm sensor's connection, and vice versa. Technicians corrected the problem on 1440 GMT, 
08/02/00, and returned the instrument to service 10 minutes later at 1450 GMT. As the 
datalogger was confusing the 2 sensors, incorrect calibrations were applied.

The correct calibrations can be applied to the raw data to obtain the correct temperature 
rises, soil moisture, etc. However, this is a rather large amount of work to apply toward 
just 1 measurement profile.  This has been identified as a medium priority reprocessing 
task.

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

• Raw data stream - documentation not supported

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

SGP/SWATS/E4 - Incorrect soil moisture data

The temperature rise readings on both the east and west profiles are too high.  This also 
causes the matric potential and water content data to be incorrect.

For the first, third and fourth date ranges, measurements are incorrect for all sensor 
locations (each depth on both profiles).

For the second date range, measurements are incorrect for the lowest 8 sensor locations 
(the 60cm, 85cm, 125cm, and 175cm depths on both profiles).

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)

SGP/SWATS/E24 - Bad soil temperature and moisture measurements

During the specified time range, soil temperature measurements ("tsoil") were normal
except for 3 sensors: 5-west, 60-west, 60-east.

• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, East Profile(tsoil_E)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)

SGP/SWATS/E18 - Incorrect depth dimension

No sensors are installed at the 85cm, 125cm, and 175cm depths. All associated variables 
should be reported as "-9999".  Ignore spurious measurements.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Soil Temperature, East Profile(tsoil_E)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E24 - Missing data

All soil temperature, soil moisture, and soil-water
potential measurements within the time range are 
missing. Archived files contain no useful data.
Removal of the files from May17'03 to June13'03 from the
archive will be requested.

• Soil Water Potential, East Profile(soilwatpot_E)
• serial_numbers_E
• lat
• Volumetric Water Content, West Profile(watcont_W)
• base_time
• alt
• tref
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Sensor Temperature Rise, East Profile(trise_E)
• serial_numbers_W
• time_offset
• Volumetric Water Content, East Profile(watcont_E)
• depth
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, East Profile(tsoil_E)
• lon

SGP/SWATS/E18 - Sensor failure, 5cm W

The sensor at the 5-cm depth on the West profile reported incorrect temperature rise 
values after the instrument was restarted on June 7, 2003.

• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E18 - Intermittent data

There is an erroneous measurement at 2052Z on the 11th. All obs should be disregarded and 
probably should be deleted from the file.

tsoil_W:
From 1007Z on the 7th to 1707Z on the 9th: tsoil_W data is missing or incorrect at the 5cm 
depth. From 1807 on the 9th to 1807 on the 10th, tsoil_W is completely missing and/or 
incorrect. From 1907 on the 10th to 2007 on the 11th, correct tsoil_W data is available 
except for missing data at the 15cm depth.

trise_W:
All trise_W data is incorrect or missing from 1007Z on the 7th to 1807Z on the 10th. From 
1907 on the 10th to 2007 on the 11th, trise_W data is missing at the 15cm depth.

tsoil_E:
From 1007 on the 7th to 1907 on the 9th, trise_E data is missing or incorrect except at 
the 5cm depth. From 2007 on the 9th to 1907 on the 10th, tsoil_E data is missing.

trise_E:
From 1007 on the 7th to 1907 on the 10th, trise_E data is missing or incorrect.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Soil Temperature, East Profile(tsoil_E)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E3 - Incorrect Soil Moisture Data

The temperature rise readings from all depths on both the east and west profilesare 
incorrect. This also causes the matric potential and water content data to be incorrect.

• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, East Profile(watcont_E)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, West Profile(trise_W)

SGP/SWATS/E5 - Sensor failure, 25cm E

The temperature rise readings from the 25-cm depth on the east profile are incorrect. This 
also causes the matric potential and water content data to be incorrect.

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

SGP/SWATS/E8 - Sensor failure, 15cm W

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.

• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E19 - Sensor failure, 85cm E

The temperature rise readings from the 85-cm depth on the east profile are incorrect. This 
also causes the matric potential and water content data for the 85-cm depth to be 
incorrect.

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

SGP/SWATS/E27 - Incorrect Soil Moisture Data

The temperature rise readings from all depths on both the east and west profiles (trise_E, 
trise_W) are incorrect. This also causes the matric potential (soilwatpot_E, 
soilwatpot_W) and water content (watcont_E, watcont_W) data to be incorrect.

• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

SGP/SWATS/E4 - Sensor failures, 5cm and 15cm W

The temperature rise readings from the 15-cm depth on the west profile were incorrect from 
20040212:1500 to 20040217:0800. This also caused the matric potential and water content 
data for the 15-cm depth to be incorrect.

The temperature rise readings from the 5-cm depth on the west profile were incorrect from 
20040217:2300 to 20040218:1900. This also caused the matric potential and water content 
data for the 5-cm depth to be incorrect.

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)

SGP/SWATS/E7 - Sensor failure, 35cm E

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.

• 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)

SGP/SWATS/E24 - Incorrect Soil Moisture Data

The temperature rise readings from all depths on both the east and west profiles (trise_E, 
trise_W) are incorrect. This also causes the matric potential (soilwatpot_E, 
soilwatpot_W) and water content (watcont_E, watcont_W) data to be incorrect.

• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)

• Raw data stream - documentation not supported

SGP/SWATS/E1 - Incorrect Soil Moisture Data, 5cm E

The temperature rise readings from the 5-cm depth on the east profile (trise_E) were 
incorrect. This also caused the matric potential (soilwatpot_E) and water content (watcont_E) 
data for the 5-cm depth to be incorrect.

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

SGP/SWATS/E8 - Sensor failure, 15cm E

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.

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

SGP/SWATS/E24 - Incorrect Soil Moisture Data

The temperature rise readings from both the west and east profiles
(trise_W, trise_E) were incorrect at all depths. This also caused the
matric potential (soilwatpot_W, soilwatpot_E) and water content
(watcont_W, watcont_E) data to be incorrect.

• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)

• Raw data stream - documentation not supported

SGP/SWATS/E19 - Metadata Errors

The latitude, longitude and altitude of the El Reno (E19) site were
incorrectly entered into the ARM database.  The correct location
of the SWATS.E19 instrument is:
   Lat: 35.557N
   Lon: 98.017W
   Alt:    421m

• alt
• lon
• lat

• alt
• lon
• lat

• alt
• lat
• lon

SGP/SWATS/E24 - Incorrect Soil Temp and Moisture Data

The soil temperature and temperature rise readings from all depths on both the east and 
west profiles (tsoil_W, tsoil_E, trise_E, trise_W) were incorrect. This also caused the 
matric potential (soilwatpot_E, soilwatpot_W) and water content (watcont_E, watcont_W) data 
to be incorrect.

• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, East Profile(tsoil_E)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)

• Raw data stream - documentation not supported

SGP/SWATS/E12 - Time drift

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.

• Precipitation, total(precip)
• time
• base_time
• time_offset

• 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)

SGP/SWATS/E7 - Missing Data

Data are missing and unrecoverable.

• 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)

SGP/SWATS/E20 - Incorrect Soil Moisture Data

Due to failure of an electronic component (apparently caused by the onset of 
precipitation), the temperature rise readings from both the west and east profiles (trise_W, trise_E) 
are incorrect at all depths. This also causes the matric potential (soilwatpot_W, 
soilwatpot_E) and water content (watcont_W, watcont_E) data to be incorrect.

• Raw data stream - documentation not supported

• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, East Profile(watcont_E)
• Sensor Temperature Rise, West Profile(trise_W)
• Sensor Temperature Rise, East Profile(trise_E)

SGP/SWATS/E1 - Sensor failure, 85cm W

The 85-west sensor failed and began reporting missing values (-9999) with intermittent 
incorrect values.

Instrument removed from service 20091014.

• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E5 - Sensor failure, 25cm E

The 25-cm East sensor began reporting missing values (-9999) after 0130 GMT, with 
intermittent incorrect values.  All data from this sensor are missing or incorrect. 

Instrument removed from service 20091102.

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

SGP/SWATS/E24 - Incorrect Soil Moisture Data

All soil moisture data are incorrect (trise, soilwatpot, and watcont).

• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)

• Raw data stream - documentation not supported

SGP/SWATS/E19 - Sensor failure, 5cm W

The sensor at the 5-cm depth on the west profile began reporting missing values (-9999) 
with a few intermittent incorrect values after 1830GMT.
(The 5-cm west soil temperatures are good until 2030GMT on 20041203.)

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E27 - Reprocess: Incorrect calibrations

The calibration coefficients for the 5-cm sensor on the East profile are
incorrect. This is causing incorrect soil water content (watcont_E) to be
reported.

• Volumetric Water Content, East Profile(watcont_E)

SGP/SWATS/E5 - Sensor failure, 35cm E

The sensor at the 35-cm depth on the east profile reported missing values for a couple of 
weeks.

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

SGP/SWATS/E1 - Sensor failure, 25cm E

The soil sensor at the 25-cm depth on the East profile began reporting missing or 
incorrect values for all soil moisture measurements (trise, tsoil, soilwatpot, watcont).

Instrument removed from service 20091014.

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

SGP/SWATS/E1 - Questionable Soil Moisture Data

Between the 06GMT and 07GMT measurements on January 14th, it appears that some sort of 
non-atmospheric moisture source affected the 4 shallowest sensors (5-cm West & East, 15-cm 
West & East). No precipitation was recorded at the site, but data indicate a sharp 
increase in soil moisture that caused suspicious behavior that gradually lessened through 
January 23rd. Animal intrusion, but more probably adolescent mischief, is suspected.

Be aware that the soil moisture responses on January 14th most likely are not due to 
natural causes. For the remainder of the period, soil moisture measurements at 5cm and 15cm 
may be adversely affected.

• Volumetric Water Content, East Profile(watcont_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Water Potential, East Profile(soilwatpot_E)

SGP/SWATS/E20 - Reprocess: Changed Depth Dimension

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.

• depth

SGP/SWATS/E24 - Reprocess: Changed Depth Dimension

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.

• depth

SGP/SWATS/E10 - Reprocess: Changed Depth Dimension

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.

• depth

SGP/SWATS/E12 - Reprocess: Changed Depth Dimension

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.

• depth

SGP/SWATS/E13 - Reprocess: Changed Depth Dimension

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.

• depth

SGP/SWATS/E9 - Incorrect reference temperature

The reference temperature was incorrect resulting in incorrect results for soil moisture 
measurements.

• 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)

SGP/SWATS/E12 - Incorrect soil moisture

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.

• 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)

SGP/SWATS/E10 - Incorrect soil moisture

All temperature rise values were incorrect.  Soil moisture variables were also incorrect 
due to the incorrect T-rise values.  Soil temperature measurements were not affected.

• 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)

SGP/SWATS/E5 - Incorrect soil moisture data

The temperature rise values were too high (> 20 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 T_rise is too high, the soil moisture data is dubious at best and unusable 
at worst.

Soil temperatures are OK.

• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Sensor Temperature Rise, East Profile(trise_E)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E12 - Reprocess: Incorrect calibrations

Incorrect data configuration program was loaded on logger resulting in incorrect 
coefficients applied.  Data will be reprocessed with correct coefficients.

• 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)

SGP/SWATS/E3 - Sensor failure, 60cm E

The temperature rise readings from the 60-cm depth on the east profile (trise_E) were 
incorrect.  This problem also causes the matric potential (soilwatpot_E) and water content 
(watcont_E) data for the 60-cm depth to be incorrect.  The sensor began to behave 
erratically at 7:00 GMT on 07/10/2008 before an apparent failure at 10:00 GMT on 08/07/2008.  
Maintenance on 10/29 corrected the problem.

Values of tsoil_E at the 60 cm depth are not impacted by this problem.

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

SGP/SWATS/E6 - Sensor failure, 15-cm W

All variables from the 15-cm depth on the west profile are reporting as -9999.  Sensor has 
failed.

• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)

SGP/SWATS/E6 - Sensor failure, 175cm E

All variables from the 175-cm depth on the east profile are reporting as -9999. Sensor has 
failed.

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

SGP/SWATS/E1 - Sensor failure, 5cm E

Both trise and tsoil for the 5cm E sensor began to drop out intermittently reporting both 
incorrect values and values of -9999 starting on 08/18/2007.  Since this date, there have 
been periods where values of -9999 have been reported continuously for months at a time, 
but the sensor always seems to come back eventually and report values that appear 
correct.  

Currently, this sensor is reporting normal values again but has failed as recently as 
10/08/08.  When this sensor is failing, it typically impacts tsoil_E, trise_E, soilwatpot_E, 
and watcont_E.  However, there are cases where tsoil_E appears OK while the other 
variables are incorrect.

Instrument was removed from service 20091014.

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

SGP/SWATS/E7 - Sensor failure, 35cm E

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.

• 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)

SGP/SWATS/E8 - Sensor failure, 35cm W

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.

• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E16 - Incorrect soil moisture

Sensors for all levels in both profiles were reporting values of temperature rise at or 
near 0 C.  The incorrect values of temperature rise result in incorrect soil moisture data.

• Volumetric Water Content, East Profile(watcont_E)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, East Profile(trise_E)
• Sensor Temperature Rise, West Profile(trise_W)

SGP/SWATS/E19 - Sensor failure, 60cm E

The 60cm East profile sensor began reporting temperature rise values near 0 C. This 
problem continued until the old profile of sensors was disconnected and the new set of sensors 
was connected. The soil temperature measure was not impacted by this problem.

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

SGP/SWATS/E20 - Sensor failure, 5cm E

The temperature rise readings from the 5-cm depth on the east profile are incorrect. This 
also causes the matric potential and water content data for the 5-cm depth to be 
incorrect. The soil temperature measurements were not affected.

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

SGP/SWATS/E27 - Sensor failure, 85cm W

The 85 cm West sensor (based on location in the multiplexer) at this facility appears to 
have failed.  After initially demonstrating problems in mid-2006, all variables from this 
sensor began to report as -9999 on and after 7:00 GMT on 08/04/06.  

Note, although this sensor is listed as 85 cm W in the data files due to its location in 
the multiplexer, it is actually the 85 cm E sensor in the ground.  

Instrument removed from service 20091204.

• Soil Temperature, West Profile(tsoil_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, West Profile(watcont_W)

SGP/SWATS/E4 - Sensor failure, 5cm E

All variables from the 5cm depth on the east profile are reporting as -9999.  Sensor has 
failed.

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

SGP/SWATS/E10 - Sensor failure, 15cm W

All variables from the 15cm West sensor are reported as missing. The sensor has failed.

• 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)

SGP/SWATS/E10 - Sensor failure, 15cm E

The 15cm E sensor failed at 7:00 GMT on 06/02/2002. Values of temperature rise from this 
sensor often do not fail automated QC tests, but inspection of the time series reveals 
that the values are incorrect. Since 2002, this sensor has alternated between providing 
temperature rise values near 0 C, equal to -9999, or other obviously incorrect values. 

Soil temperature data are not affected.

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

SGP/SWATS/E15 - Incorrect soil moisture

At 20:00 GMT on 05/07/08, temperature rise data from ALL sensors on both profiles began 
reporting values of temperature change near 0 C. These incorrect values of temperature rise 
result in incorrect soil moisture data for all sensors. 

Soil temperature data are unaffected.

• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Volumetric Water Content, East Profile(watcont_E)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)

SGP/SWATS/E1 - Sensor failure, 85cm E

Both trise and tsoil for the 85cm E sensor dropped out reporting values of -9999 starting 
on 08/24/2005.  Interestingly, both this sensor and the one at 85 cm W (D040730.1) began 
to report data again June-August 2006.  Both sensors have reported values of -9999 after 
this brief period through the current date.  This problem impacts tsoil_E, trise_E, 
soilwatpot_E, and watcont_E. 

Instrument was removed from service 20091014.

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

SGP/SWATS/E5 - Sensor failure, 5cm E

The temperature rise on 5cm E profile are incorrect (> MAX QC test) beginning 20070623. 
This also causes the matric potential and water content data to be incorrect.

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

SGP/SWATS/E5 - Sensor failure, 15cm W

Both the temperature rise and soil temperature for the 15-cm W profile began to 
intermittently report as -9999 on 04/08/08. The intermittent drop outs continued until 9:00 GMT on 
04/20/08 after which all data are reported as -9999 through the current date. This 
problem also impacts the matric potential and water content data.

Instrument removed from service 20091102.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E5 - Sensor failure, 125cm W

Both the temperature rise and soil temperature measures of the 125-cm W profile are 
reported as -9999 since 10/07/99. This sensor has been essentially dead since then, and all 
associated variables are impacted. 

Instrument removed from service 20091102.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E5 - Sensor failure, 175cm W

The temperature rise of the 175cm W profile began reporting as incorrect with values near 
0 C on 20010817. This also causes the matric potential and water content data to be 
incorrect.

Soil temperature data are not affected.

Instrument removed from service 20091102.

• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E5 - Sensor failure, 175cm E

The temperature rise of the 175-cm East profile began reporting as incorrect with values 
near 0 C. This also caused the matric potential and water content data to be incorrect.

On 10/28/08, a broken wire was fixed and data came back online.

Soil temperature data was unaffected.

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

SGP/SWATS/E7 - Soil temperature irregular, 125cm E

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.

• Soil Temperature, East Profile(tsoil_E)

SGP/SWATS/E10 - Soil temperature irregular, 25cm W

The 25 cm W sensor was demonstrating temporal irregularities and were noisy at times.  
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 E10.

A broken wire was repaired for 25cm W sensor.

• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E27 - Incorrect soil temperature measurements

All of the tsoil measurements at this EF appear noisy and erratic at times, impacting all 
sensors and both profiles.

• Soil Temperature, East Profile(tsoil_E)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E16 - Sensor failure, 125cm E

Temperature rise values from the 125 cm E sensor began to intermittently drop out to 
values near 0 C starting at 4:00 GMT on 12/14 before permanently reporting values near 0 C at 
20:00 GMT on 12/15.  The incorrect values of temperature rise result in incorrect matric 
potential and water content data for these sensors.

Soil temperature for this sensor is not affected.  

Sensor resumed working 20090425.

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

SGP/SWATS/E19 - Sensor failure, 125 W

Temperature rise values form the 125 cm West profile sensor began reporting values near 0 
C. This problem continued until the old profile of sensors was disconnected and the new 
set of sensors was connected. The soil temperature measure was not impacted by this problem.

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)

SGP/SWATS/E19 - Failed sensor, 35cm E

Temperature rise and soil temperature from the 35cm East profile sensor began to report as 
-9999.  This problem continued until the old profile of sensors was disconnected and the 
new set of sensors was connected.

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

SGP/SWATS/E19 - Sensor failure, 15cm W

Temperature rise and soil temperature from the 15cm West profile sensor began to report as 
-9999.  This problem continued until the old profile of sensors was disconnected and the 
new set of sensors was connected.

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E1 - Sensor failure, 15cm W

Both trise and tsoil for the 15cm W sensor began to drop out intermittently reporting both 
incorrect values and values of -9999 starting on 05/29/2008.  Currently, this sensor is 
reporting mainly values of -9999 for all measurements with a few random incorrect values 
from time to time.  This problem impacts tsoil_W, trise_W, soilwatpot_W, and watcont_W.

Instrument removed from service 20091014.

• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E5 - Sensor failure, 5cm E

Beginning 07/08/2007, the 5-cm East profile sensor is reporting -9999 for all variables.

Instrument removed from service 20091102.

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

SGP/SWATS/E19 - Sensor failure, 5cm E

After the new refurbishment sensors were hooked up, the 5 cm E sensor began reporting 
values of -9999 for all variables.

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

SGP/SWATS/E20 - Sensor failure, 15cm E

The temperature rise readings from the 15-cm depth on the east profile were incorrect (0 
or -9999) This also caused the matric potential and water content data for the 15-cm depth 
to be incorrect.

Soil temperature data measurements also failed 20060502.  No data from this sensor should 
be used at or beyond this date.

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

SGP/SWATS/E20 - Sensor failures

Following a period of missing values (-9999) from 08/05/05-08/17/05, sensors at several 
depths failed.

Temperature rise values from the 60cm West and 85cm East profile sensors were very noisy 
after 08/17/05. These data, including matric potential and water content, were incorrect.

Temperature rise values from the 85cm West and 125cm East profile sensors are reported as 
0 after 08/17/05. Matric potential and water content data for these sensor were also 
incorrect.  Soil temperatures for these depths were unaffected.

Temperature rise and soil temperature measurements for the 60cm East and 125cm West 
profile sensors were reported as 0 or -9999 after 08/17/05. Matric potential and water content 
data for these sensors were also incorrect.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Temperature, East Profile(tsoil_E)
• Sensor Temperature Rise, West Profile(trise_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, East Profile(trise_E)

SGP/SWATS/E27 - Incorrect serial numbers

The wiring at E27 from the Campbell Scientific 229-L sensors is backwards. This issue 
impacts the following variables but does not impact data quality: serial_numbers_W, 
serial_numbers_E.

All serial numbers stored in the serial_numbers_W variable apply to data stored in the 
trise_E and tsoil_E variables, and vice versa.  Thus, the user should be aware that the 
trise_W, trise_E, tsoil_W, and tsoil_E variables actually contain data from the opposite 
profile.

• serial_numbers_E
• serial_numbers_W

SGP/SWATS/E27 - Reprocess: Miscalibration

The wiring at E27 from the Campbell Scientific 229-L sensors is backwards. Matric 
potential and water content data are incorrect due to incorrect calibrations being applied to 
temperature rise sensor data.

• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)

SGP/SWATS/E16 - Sensor failure, 125cm E

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.

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

SGP/SWATS/E20 - Incorrect soil moisture data

After 12/20/2007, temperature rise values for all sensors (still operational at the time) 
were much too high, on the order of 10's of degrees C. Matric potential and water content 
data for these sensors were also incorrect.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, East Profile(watcont_E)
• Sensor Temperature Rise, West Profile(trise_W)
• Sensor Temperature Rise, East Profile(trise_E)

SGP/SWATS/E19 - Incorrect soil, 35cm E

The tsoil measurements from the 35 cm E sensor at this site are slightly irregular and too 
noisy at times.

• Soil Temperature, East Profile(tsoil_E)

SGP/SWATS/E1 - Instrument failure

The diurnal temperature change in the tsoil measurements from all sensors installed below 
5 cm at this facility appear questionable.  On a daily basis, the diurnal trends in the 
tsoil measurements from depths below 5 cm did not match the above ground tref measurements 
or the tsoil measurements from the 5 cm W sensor (the 5 cm E sensor has failed). The 
tsoil measurements from these deeper sensors began to decrease prior to solar noon nearly 
every day. Also, the magnitudes of the diurnal change in these instruments appear to be the 
same for all sensors (Normally, the diurnal changes in tsoil are damped as we progress 
deeper below the surface).  

Attempts to correct the problem were unsuccessful until the time of site decommissioning.  
This facility was decommissioned and maintenance efforts ceased 10/1/2009.

• Soil Temperature, East Profile(tsoil_E)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E27 - Sensor failure, 125cm E

The 125 cm E sensor tsoil measurements were very erratic and much too high, and all trise 
values were reporting as slightly negative or -9999.  The issue started on 06/07 and 
corrected itself by 20:00 GMT the same day, but the problem returned on 06/10.  Connections 
were re-seated on 6/17 to resolve the problem.

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

SGP/SWATS/E3 - Incorrect temperature rise data

The temperature rise readings from all depths on both the east and west profiles were 
incorrect, reading near zero. This also causes the matric potential and water content data to 
be incorrect.

• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Temperature, West Profile(tsoil_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Soil Temperature, East Profile(tsoil_E)
• Soil Water Potential, East Profile(soilwatpot_E)
• Sensor Temperature Rise, West Profile(trise_W)
• tref
• time_offset

SGP/SWATS/E8 - Sensor failure, 60cm W

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.

• 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)

SGP/SWATS/E19 - Incorrect tsoil, 85cm E and 85cm W

The tsoil measurements from the 85 cm E and 85 cm W sensors at this site are slightly 
irregular and too noisy at times.

• Soil Temperature, East Profile(tsoil_E)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E19 - Incorrect tsoil, 125cm E

The tsoil measurements from the 125 cm E sensor at this site are slightly irregular and 
too noisy at times.

• Soil Temperature, East Profile(tsoil_E)

SGP/SWATS/E18 - Unknown

The data for site E18 appears to be incorrect and this fact is not completely indicated by 
QC flags.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, East Profile(watcont_E)
• Sensor Temperature Rise, East Profile(trise_E)
• tref
• Soil Temperature, East Profile(tsoil_E)

SGP/SWATS/E16 - Sensor failure

The East 15 cm sensor began producing intermittent missing values between 5/6 and 5/11, 
and then consistently on 5/12 and after. This sensor has failed.

• Volumetric Water Content, East Profile(watcont_e)
• Soil Temperature, East Profile(tsoil_e)
• Sensor Temperature Rise, East Profile(trise_e)
• Soil Water Potential, East Profile(soilwatpot_e)
• fwi_e
• trise_ref_e

SGP/SWATS/E16 - Sensor failure, 35-cm E

All variables from the 35-cm depth on the east profile are reporting as -9999. Sensor has 
failed.

• Volumetric Water Content, East Profile(watcont_e)
• Soil Temperature, East Profile(tsoil_e)
• Sensor Temperature Rise, East Profile(trise_e)
• Soil Water Potential, East Profile(soilwatpot_e)
• fwi_e
• trise_ref_e

SGP/SWATS/E19 - Sensor failure, 60cm W

The West 60 cm sensor began producing missing values at variable times on 5/11/2010, then 
consistently. It appears the sensor failed.  This facility was shutdown 5/24 following a 
tornado event.

• Sensor Temperature Rise, West Profile(trise_W)
• Soil Water Potential, West Profile(soilwatpot_W)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Temperature, West Profile(tsoil_W)

SGP/SWATS/E13 - Lightning damage

After a lightning strike near the CF, the SWATS trise values were reporting near zero. The 
current channel in the CE8 module failed, so the wire was moved to the next channel and 
trise values returned to normal.

There are no soil moisture data available during this time period.

• Soil Water Potential, West Profile(soilwatpot_W)
• Sensor Temperature Rise, West Profile(trise_W)
• Volumetric Water Content, West Profile(watcont_W)
• Sensor Temperature Rise, East Profile(trise_E)
• Volumetric Water Content, East Profile(watcont_E)
• Soil Water Potential, East Profile(soilwatpot_E)

SGP/SWATS/E15 - Missing data

Data are missing and unrecoverable.

• 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)

SGP/SWATS/E16 - Sensor failure, 25cm E

The East 25 cm sensor trise dropped to zero. Connections were checked. Sensor has failed.

• Volumetric Water Content, East Profile(watcont_e)
• Sensor Temperature Rise, East Profile(trise_e)
• Soil Water Potential, East Profile(soilwatpot_e)
• fwi_e
• trise_ref_e

SGP/SWATS/E20 - Sensor failure, 25cm E

The East 25 cm sensor t-rise values dropped to zero on 7/11. The t-rise values came back 
up on 7/22 0200 GMT, but again were missing from 7/25 1600 GMT through 7/27 1700 GMT.  Ops 
reseated connection.

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

SGP/SWATS/E10 - Incorrect calibrations

After a power outage, an older version of the datalogger program was accidently installed 
on the SWATS, resulting in improperly calibrated soilwatpot and watcont values from all 
levels in both profiles for this time period.

• Volumetric Water Content, East Profile(watcont_E)
• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, East Profile(soilwatpot_E)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E8 - Sensor failure, 15cm W

The 15cm West profile sensor was not producing reasonable values of matric potential or 
water content.  Site ops found and tighten a loose wire.

• Volumetric Water Content, West Profile(watcont_W)
• Soil Water Potential, West Profile(soilwatpot_W)

SGP/SWATS/E8 - Incorrect soil moisture

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.

• 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)