Data Set ID: 

Arctic EASE-Grid Freeze and Thaw Depths, 1901 - 2002, Version 1

This data set contains mean, median, minimum and maximum freeze and thaw depths for each year from
1901 to 2002 on the 25 km resolution Equal-Area Scalable Earth Grid (EASE-Grid) for areas north of 50
deg. Freeze and thaw depths are estimated using a variant of the Stefan solution using an edaphic factor
and freezing or thawing indices as inputs. The edaphic factor is estimated based on different land surface
types; the freezing and thawing indices are from Northern Hemisphere EASE-Grid annual freezing
and thawing indices, 1901 - 2002 (Zhang, et al. 2005).

Two ASCII files are available for each year for freeze depth and thaw depth, respectively. Each file is
approximately 25.6 MB in size. In addition, there is one 10.5 MB ASCII file defining the latitude and longitude coordinates for each grid point. The data set is available via FTP as three compressed files.

This is the most recent version of these data.

BASIC Level of Service

Data: Data integrity verified

Documentation: Key metadata and links to supporting documentation available

User Support: Assistance with data access and basic data usage

See All Level of Service Details

  • Frozen Ground > Active Layer > ACTIVE LAYER
  • Frozen Ground > Active Layer > Freeze/Thaw Depth
Data Format(s):
Spatial Coverage:
N: 90, 
S: 50, 
E: 180, 
W: -180
Platform(s):Not specified
Spatial Resolution:Not SpecifiedSensor(s):Not specified
Temporal Coverage:
  • 1 January 1901 to 31 December 2002
Temporal ResolutionNot specifiedMetadata XML:View Metadata Record
Data Contributor(s):Tingjun Zhang, R. Barry

Geographic Coverage

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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.

Zhang, T., J. McCreight, and R.G. Barry 2006. Arctic EASE-Grid Freeze and Thaw Depths, 1901 - 2002, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].

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