Ground temperatures in ice-cemented ground at Linnaeus Terrace, Dry Valleys, Antarctica  View Catalog Page Entry ID
GGD6
Summary
Soil temperatures were measured with Campbell 107 soil thermistors. Thermistors were placed at 0, 17, 23 (just above the ice-cemented permafrost) and 40 cm depth. To emplace the sensors, first a soil pit was dug to the level of ice-cemented permafrost. Then a hammer drill was used to make a narrow, 15 cm deep hole into the ice-cemented ground. The thermistor was placed into the drill hole. This procedure caused minimal disturbance to the ice-cemented ground. Air temperature and humidity were measured with a Campbell 207 air probe. The temperature on the surface of an outcrop of Beacon sandstone was measured with a T-type thermocouple. Sunlight was measured with a LiCor 200 pyranometer. The sensors were deployed during Jan 1993 but (due to equipment failure) data storage began only on 6 Jan 1994 and was continued until 16 Jan 1995. All temperature sensors were removed after the data collection interval and calibrated in the laboratory. Calibrations were applied using the Steinhart and Hart (1968) representations for the temperature dependence of the thermistor resistance. This was necessary since the instrumental calibration for the 107 thermistor provided by Campbell did not extend below -40C. After correction, the error in the temperature measurement is estimated to be less than 0.2 C and error in the humidity measurement was Campbell 207 RH sensor has high errors for relative humidity values below 15% --- tending to systematically overestimate values by more than 10% humidity. The error in the averaged light measurement is less than 10 W/m2. All sensors were sampled once every 10 minutes and averages of three measurements were written to final memory every 30 minutes corresponding to 48 recordings each day.
Data are stored in columns of ASCII data; entries are 1. Digital day of year in 1994 2. Air temperature 3. Air relative humidity 4. Sunlight, W/m2 5. Soil surface temperature 4. Sunlight, W/m2 5. Soil surface temperature 6. Temperature at 17 cm depth 7. Temperature at 23 cm depth 8. Temperature at 40 cm depth 9. Temperature on surface of rock
Data are presented on the CAPS Version 1.0 CD-ROM, June 1998.
Geographic Coverage
Spatial Coordinates:
N: -77.6°
S: -77.6°
E: 161.083°
W: 161.083°
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Data Set Citation
Dataset Creator: McKay, C. P.
Dataset Title: Ground temperatures in ice-cemented ground at Linnaeus Terrace, Dry Valleys, Antarctica
Dataset Release Date: 1998-01-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/ggd6.html
Temporal Coverage
Start Date: 1994-01-01
Stop Date: 1994-12-31
Location Keywords
- CONTINENT ANTARCTICA LINNAEUS TERRACE, DRY VALLEYS, MCMURDO AREA, ANTARCTICA
Science Keywords
- Cryosphere Frozen Ground Permafrost
- Cryosphere Frozen Ground Soil Temperature
- Land Surface Frozen Ground Permafrost
- Land Surface Frozen Ground Soil Temperature
Ancillary Keywords
- Meteorology
- Permafrost Temperature
- Soil Temperature
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
NSIDC Frozen Ground Data Center
Data Center URL: http://nsidc.org/fgdc/
Data Center Personnel
Name: NSIDC FGDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution
Distribution Media: FTP
Distribution Format: ASCII Text
Personnel
Christopher P. McKay
Role: INVESTIGATOR
Phone: 1 650 604-6864 x
Fax: 1 650 604-6779 x
Email: chris.mckay@nasa.gov
Contact Address:
- NASA Ames Research Center
- Space Science Division
- Mail Stop 245-3
City: Moffett Field
Province or State: CA
Postal Code: 94035
Country: USA
Reference
Mckay, C.P., Mellon, M.T., Friedmann, E.I. 1998. Soil temperatures and stability of ice-cemented ground in th McMurdo Dry Valleys, Antarctica. Antarctic Science, 10(1), p. 31-38.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 1998-01-01
Last DIF Revision Date: 2012-08-24
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