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Data Set ID:
GGD9

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

Parameter(s):
  • Frozen Ground > Active Layer
  • Atmospheric Temperature > Degree Days
  • Frozen Ground > Permafrost
  • Frozen Ground > Seasonally Frozen Ground
  • Snow/Ice > Snow Depth
Spatial Coverage:
  • N: 64.5, S: 64.5, E: -18.667, W: -18.667

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1983 to 31 December 1991
Temporal Resolution: Not specified
Data Format(s):
  • Microsoft Excel
  • ASCII Text
Platform(s) Not specified
Sensor(s): Not specified
Version: V1
Data Contributor(s): Thora Ellen Thorhalsdottir
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.

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].
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