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

Metadata:

• Identification_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Dataset_Identifier: ggd6

Citation:

Citation_Information:

Originator: Unknown

Publication_Date: Unknown

Title:

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

Online_Linkage:

ftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd6_soiltemp_antarctica/

Description:

Abstract:

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.

Purpose: scientific research

Documentation:

Users_Guide:

Citation_Information:

Originator: Unknown

Publication_Date: Unknown

Title:

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

Online_Linkage:

http://nsidc.org/data/docs/fgdc/ggd6_soiltemp_antarctica

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates_Times:

Beginning_Date: 1994

Ending_Date: 1994

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: 161.083

East_Bounding_Coordinate: 161.083

North_Bounding_Coordinate: -77.6

South_Bounding_Coordinate: -77.6

Keywords:

Theme:

Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords

Theme_Keyword: EARTH SCIENCE > Cryosphere > Frozen Ground > Permafrost

Theme_Keyword: EARTH SCIENCE > Cryosphere > Frozen Ground > Soil Temperature

Theme_Keyword: EARTH SCIENCE > Land Surface > Frozen Ground > Permafrost

Theme_Keyword: EARTH SCIENCE > Land Surface > Frozen Ground > Soil Temperature

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Meteorology

Theme_Keyword: Permafrost Temperature

Theme_Keyword: Soil Temperature

Place:

Place_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords

Place_Keyword:

Continent > Antarctica > Linnaeus Terrace, Dry Valleys, McMurdo area, Antarctica

Thematic_Layer_Identification:

Number_of_Thematic_Layers: 4

Layer_Name:

Theme:

Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords

Theme_Keyword: EARTH SCIENCE > Cryosphere > Frozen Ground > Permafrost

Layer_Name:

Theme:

Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords

Theme_Keyword: EARTH SCIENCE > Cryosphere > Frozen Ground > Soil Temperature

Layer_Name:

Theme:

Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords

Theme_Keyword: EARTH SCIENCE > Land Surface > Frozen Ground > Permafrost

Layer_Name:

Theme:

Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords

Theme_Keyword: EARTH SCIENCE > Land Surface > Frozen Ground > Soil Temperature

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher P. McKay

Contact_Organization: NASA Ames Research Center

Contact_Address:

Address_Type: mailing

Address: Mail Stop 245-3

City: Moffett Field

State_or_Province: CA

Postal_Code: 94035

Country: USA

Contact_Voice_Telephone: 650-604-6864

Contact_Facsimile_Telephone: 650-604-6779

Contact_Electronic_Mail_Address: cmckay@mail.arc.nasa.gov

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Frozen Ground Data Center

Contact_Person: NSIDC FGDC USER SERVICES

Contact_Address:

Address_Type: mailing

Address: National Snow and Ice Data Center

Address: CIRES, 449 UCB

Address: University of Colorado

City: Boulder

State_or_Province: CO

Postal_Code: 80309-0449

Country: USA

Contact_Voice_Telephone: +1 (303) 492-6199

Contact_Facsimile_Telephone: +1 (303) 492-2468

Contact_Electronic_Mail_Address: nsidc@nsidc.org

Resource_Description: ggd6

Distribution_Liability:

NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Metadata_Reference_Information:

Metadata_Date: 0000

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: NSIDC FGDC USER SERVICES

Contact_Organization: Frozen Ground Data Center

Contact_Address:

Address_Type: mailing

Address: National Snow and Ice Data Center

Address: CIRES, 449 UCB

Address: University of Colorado

City: Boulder

State_or_Province: CO

Postal_Code: 80309-0449

Country: USA

Contact_Voice_Telephone: +1 (303) 492-6199

Contact_Facsimile_Telephone: +1 (303) 492-2468

Contact_Electronic_Mail_Address: nsidc@nsidc.org

Metadata_Standard_Name:

FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

Metadata_Standard_Version: FGDC-STD-012-2002