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Data Set ID:

Upper soil temperatures in the Kolyma Highland, Version 1

This data set contains soil temperature and meteorological data for various sampling locations near the Aborigen research station in the Kolyma Highland, Northeastern Russia. Data are averaged from 1977 to 1995. A tab-delimited ASCII text file and Excel spreadsheet provide the following data: soil degree days, annual maximum temperature, and annual minimum temperature at 1 cm, 5 cm, 10 cm, and 20 cm depth; maximum annual snow depth, vegetation type and percent coverage, thaw depth, mean soil water content, soil classification, soil field capacity, soil bulk density, slope gradient/aspect, elevation, latitude, and longitude. Data are available via FTP.

This is the most recent version of these data.

  • Atmospheric Temperature > Degree Days
  • Snow/Ice > Freeze/Thaw
  • Atmospheric Temperature > Maximum/Minimum Temperature
  • Precipitation > Precipitation Amount
  • Frozen Ground > Seasonally Frozen Ground
  • Snow/Ice > Snow Depth
  • Soils > Soil Bulk Density
  • Soils > Soil Classification
  • Soils > Soil Moisture/Water Content
  • Frozen Ground > Soil Temperature
Data Format(s):
  • Microsoft Excel
  • ASCII Text
Spatial Coverage:
N: 62.033, 
S: 61.867, 
E: 149.667, 
W: 149.5
Platform(s):Not specified
Spatial Resolution:Not SpecifiedSensor(s):Not specified
Temporal Coverage:
  • 1 October 1977 to 31 December 1995
Temporal ResolutionNot specifiedMetadata XML:View Metadata Record
Data Contributor(s):G.G. Mazhitova, A.V. Alfimov, D.I. Berman

Geographic Coverage

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FTP data can be downloaded through a Web browser or command line via FTP. For help downloading data through an FTP client, go to the How to access data using an FTP client support page.

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.

Alfimov, A.V. 2003. Upper soil temperatures in the Kolyma Highland, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].

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Detailed Data Description


Soil temperature and meteorology data are in an Excel spreadsheet called "ggd31_kolyma_soil_met.xls." Soil temperature data are in a tab-delimited ASCII text file called "ggd31_kolyma_soil.txt." Both files contain the following headings for soil temperature data:

  • Site ID (note: geographic locations are not specified)
  • Elevation (m)
  • Slope gradient/aspect
  • Vegetation type and percent coverage
  • Method of measurement (see key below)
  • Thaw depth (cm)
  • Soil field capacity (%)
  • Mean soil water content (% by weight)
  • Soil bulk density (g/cm3)
  • Soil classification (World Reference Base, 1998)
  • Soil degree days at 1 cm, 5 cm, 10 cm, and 20 cm depth
  • Annual maximum temperature (°C) at 1 cm, 5 cm, 10 cm, and 20 cm depth
  • Annual minimum temperature (°C) at 1 cm, 5 cm, 10 cm, and 20 cm depth
  • Maximum annual snow depth (cm)

Key to method of measurement:

1: Round-year measurements using recorders
2: Seasonal measurements using recorders
3: Manual round-year measurements (once a day in summers and once every 5-6 days in winters)
4: Short-term measurement series (eight readings daily)
5: Maximum thermometers
6: Extrapolated values (based on topography, soil type and vegetation)

Finally, meteorological data from three points near the study site (upslope from KVBS weather station, downslope from KVBS weather station, and Detrin weather station) are provided in a file called "ggd31_kolyma_met.txt." Data are averaged from 1977 to 1985. The following columns of meteorological data are provided in "ggd31_kolyma_met.txt" and in "ggd31_kolyma_soil_met.xls":

  • Station name
  • Latitude (°)
  • Longitude (°)
  • Elevation (m)
  • JanT (January mean temperature, °C)
  • JunT (June mean temperature, °C)
  • JulT: (July mean temperature, °C)
  • AugT: (August mean temperature, °C)
  • TDD (thawing degree days)
  • FDD (freezing degree days)
  • Snow (snow depth, mm)
  • Rain (rain amount, mm)
  • Year (annual precipitation amount, mm)
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File Size

ggd31_kolyma_soil_met.xls: 51 KB
ggd31_kolyma_soil.txt: 19 KB
ggd31_kolyma_met.txt: 1 KB

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Spatial Coverage

The study site is within 20 km of the Aborigen research station, approximately 300 m asl to 2500 m asl in the Kolyma Highland, Northeastern Russia. Samples are confined to the following geographic boundaries:

61° 52' N to 62° 02' N 
149° 30' E to 149° 40' E

The study site lies within a taiga biome with altitudinal belts of thin larch forests and alpine tundra. The mean annual air temperature within the forest belt is -11°C to -12°C, the mean July temperature is 14°C, the mean January temperature is -38°C, and the mean annual precipitation is 300 mm to 360 mm.

The mean annual air temperature within the alpine tundra belt is -5°C to -10°C, the mean July temperature is 10°C to 13°C, the mean January temperature is -28°C to -31°C, and the mean annual precipitation is 330 mm to 670 mm.

Permafrost temperatures range from -3°C to -7°C.

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Temporal Coverage

Data extend from 1977 to 1995.

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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

A.V. Alfimov
Institute for Biological Problems of the North
Russian Academy of Sciences, Far-East Branch
ul. Portobaya 18
Magadan, 685000

Document Information

Document Creation Date:

March 2003

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