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Data Set ID:

Seasonal and annual dynamics of frozen ground, central highland of Iceland, Version 1

This dataset documents a nine-year study to investigate the seasonal and annual dynamics of frozen ground and explore the relationship with environmental factors. The presence/absence of frozen ground and active layer thickness were recorded three times over the growing season (4-7 July, 1-4 August, and 20-24 August) at 51 permanent points in different plant communities and on 12 palsas (Thorhallsdottir 1996, p. 237). Sample size is variable: 33 permanent measurement stations in 1983, 29 in 1984, 63 in 1985-1991. Active layer depth measurement sites averaged 51 over the span of the data set. Data include mean active layer depth (and standard error) in early July and early August (for palsas and with palsas excluded); monthly degree days above zero, precipitation, snow depth, and frost degree days (i.e., below zero.) Data are presented on the CAPS Version 1.0 CD-ROM, June 1998.

Geographic Coverage

Data Set Tabs

Spatial Coverage:
  • N: 64.5, S: 64.5, E: -18.667, W: -18.667

Spatial Resolution:
Not Specified
Temporal Coverage
  • 1983-01-01 to 1991-12-31
Temporal Resolution:
Not specified
  • Frozen Ground > Active Layer
  • Atmospheric Temperature > Degree Days
  • Frozen Ground > Permafrost
  • Frozen Ground > Seasonally Frozen Ground
  • Snow/Ice > Snow Depth
Not specified
Sensor(s): Not specified
Data Format(s):
  • Microsoft Excel
  • ASCII Text (.txt)
Data Contributor(s): Thora Ellen Thorhalsdottir

Data Citation

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

Thorhalsdottir, T.E. 1998. Seasonal and annual dynamics of frozen ground, central highland of Iceland, Version 1. [indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. [Date Accessed].
No See Also links are available for this data set.

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Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA