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Data Set ID:
GGD632

Active-Layer and Permafrost Temperatures, Soendre Stroemfjord, Greenland, Version 1

This data set contains active-layer and permafrost temperatures from two stations in Soendre Stroemfjord, Greenland. Snow depth and snow extent were also recorded. Thermometers at Station A (67 deg N, 50.8 deg W, 50 m asl) recorded temperatures once a day from September 1967 to February 1976. Thermometers at Station B (67 deg N, 50.8 deg W, 38 m asl) recorded temperatures once a day from September 1967 to August 1970; however, only bi-weekly averages are given for Station B. Data are in tab-delimited ASCII text format and are available via FTP.

Geographic Coverage

Parameter(s):
  • Frozen Ground > Active Layer
  • Frozen Ground > Soil Temperature
  • Soils > Soil Temperature
Spatial Coverage:
  • N: 67, S: 67, E: 50.8, W: 50.8

Spatial Resolution: Not Specified
Temporal Coverage:
  • 15 September 1967 to 15 February 1976
  • 6 September 1967 to 18 August 1970
Temporal Resolution: Not specified
Data Format(s):
  • ASCII Text
Platform(s) Not specified
Sensor(s): Not specified
Version: V1
Data Contributor(s): Hasse Hauch, Ole B. Olesen, Hanne Christiansen
Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Olesen, O.B., H.H. Christiansen, and H. Hauch 2003. Active-Layer and Permafrost Temperatures, Soendre Stroemfjord, Greenland, Version 1. [Indicate subset used]. Copenhagen, Denmark. Greenlandic Geological Survey, GEUS. [Date Accessed].

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Detailed Data Description

In 1967, the Greenlandic Geological Survey (GEUS) started a program to monitor soil temperatures in permafrost and seasonal frost areas in West Greenland as part of the UNESCO International Hydrological Decade program (Olesen 1967avan Tatenhove and Olesen 1994). That same year, Ole Olesen established two permafrost stations in Søndre Strømfjord: Station A and Station B at 67°N, 50.8°W.

Olesen installed platinum resistance thermometers at Station A at 21 different depths down to 15 m, and backfilled the holes with original material. Thermistors at Station B were installed at 12 different depths. A Wheatstone bridge recorded temperatures (° C) at approximately noon every day. This instrument measures temperatures between -10°C to 10°C. Olesen also recorded snow depth (cm) and snow extent (quartiles). The thermistors were calibrated at 0°C only. Temperatures were measured in fine-grain sediment down to 15 m. Station A ("Mainstation") was located at 50 m asl, and Station B was at 38 m asl. Hasse Hauch transferred the analog data to digital format.

Format

Data are in tab-delimited ASCII text format. The file "ggd632_soiltmp_ssmain.txt" contains the following columns for Station A data:

  • Date: yyyymmdd
  • 1 through 21: Bi-weekly averaged raw soil temperatures for 21 different depths ranging from 0.25 m to 15 m
  • Max air temp (deg. C)
  • Min air temp (deg. C)
  • Snow cover index (1-4): Snow extent in quartiles. 1 = 25%, 2 = 50%, 3 = 75%, 4 = 100%, 0 = no data
  • Snow depth (cm)

The file "ggd632_soiltmp_ssb.txt" contains the following columns for Station B data:

  • Date: yyyymmdd
  • 1 through 12: Daily raw soil temperatures for 12 different depths ranging from 0.25 m to 15 m
  • Snow cover index (1-4): Snow extent in quartiles. 1 = 25%, 2 = 50%, 3 = 75%, 4 = 100%, 0 = no data
  • Snow depth (cm)

The files "ggd632_sensors_ssmain.txt" and "ggd632_sensors_ssb.txt" list the sensors from Stations A and B, respectively, with corresponding depths (m) and calibration factors (°C). Some thermometers stopped working during the period of data collection.

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File Naming Convention

ggd632_sensors_ssb.txt
ggd632_sensors_ssmain.txt
ggd632_soiltmp_ssb.txt
ggd632_soiltmp_ssmain.txt

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File Size

ggd632_sensors_ssb.txt: 1 KB
ggd632_sensors_ssmain.txt:1KB
ggd632_soiltmp_ssb.txt: 79 KB
ggd632_soiltmp_ssmain.txt: 25 KB

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Spatial Coverage

Data were collected in Søndre Strømfjord, Greenland, at approximately 67°N, 50.8°W.

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Temporal Coverage

Thermometers at Station A recorded temperatures once a day from September 1967 to February 1976. Thermometers at Station B recorded temperatures once a day from September 1967 to August 1970; however, only bi-weekly averages are given for Station B.

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Software and Tools

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Data Acquisition and Processing

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References and Related Publications

Contacts and Acknowledgments

Ole B. Olesen
Geological Survey of Denmark and Greenland
Øster Voldgade 10
1350 øbenhavn K
Denmark

Hanne H. Christiansen
Institute of Geography, University of Oslo
P.O. Box 1042, Blindern
0316 Oslo
Norway

Hasse Hauch
Institute of Geography
Øster Voldgade 10
1350 København K
Denmark

Acknowledgments: 

When using these data, please acknowledge that they are the property of the Danish and Greenlandic Geological Survey (GEUS). A cooperative agreement with GEUS was signed before any access was granted to the hardcopy data digitized by Niels Foged and his students at Artek.

Document Information

Please cite these data as follows:

Olesen, O.B., H.H. Christiansen, and H. Hauch. 2003. Active-Layer and Permafrost Temperatures, Søndre Strømfjord, Greenland. Copenhagen, Denmark: Greenlandic Geological Survey (GEUS). Distributed by National Snow and Ice Data Center. Digital Media.

Document Creation Date:

March 2003

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