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Ground temperatures in ice-cemented ground at Linnaeus Terrace, Dry Valleys, Antarctica, Version 1

Metadata Updated: December 6, 2023

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.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023
Publisher NSIDC
Maintainer
Identifier C1386206873-NSIDCV0
Data First Published 1994-01-01
Language en-US
Data Last Modified 1994-12-31
Category geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Ground temperatures in ice-cemented ground at Linnaeus Terrace, Dry Valleys, Antarctica, Version 1. Version 1. Archived by National Aeronautics and Space Administration, U.S. Government, National Snow and Ice Data Center.
Harvest Object Id bb7b3217-eb7d-4cf8-bd3a-65bd97a29280
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1386206873-NSIDCV0.html
Metadata Type geospatial
Old Spatial 161.083 -77.6 161.083 -77.6
Program Code 026:001
Source Datajson Identifier True
Source Hash 60eb067b5285700df60a49ea83a2310e9df21dc5cca37fae6e198ef5057acdba
Source Schema Version 1.1
Spatial
Temporal 1994-01-01T00:00:00Z/1994-12-31T23:59:59.999Z

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