ArcticRIMS: Daily Thaw Depth and Frozen Ground Depth, Based on ERA-40 2-meter

Daily thaw depth and frozen ground depth are calculated using a frozen ground model. Oelke et al. [2004] provide details, while also referring to [Oelke et al., 2003]. Thaw depth and frozen ground are calculated using different initial model settings. In the first case, all soil down to the lower model boundary is set to sub-freezing initial temperatures. Thawing during the summer months caused the development of a thawed layer at the top with the thaw depth again decreasing during freeze-up of the thawed layer in fall. Frozen ground depth on the other hand is calculated with soil temperatures at all depths above-freezing at the beginning. Here the frozen depth increased during winter, and spring thawing eventually decreases its value. The data is presented in 24 sub-datasets of different spatial and temporal aggregations.

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Temporal Range

  • Begin:  1970-01-01T00:00:00Z
    End:  2001-12-31T00:00:00Z

Keywords

Resource Type dataset
Temporal Range Begin 1970-01-01T00:00:00Z
Temporal Range End 2001-12-31T00:00:00Z
Temporal Resolution N/A
Bounding Box North Lat 90.00000
Bounding Box South Lat 45.00000
Bounding Box West Long -180.00000
Bounding Box East Long 180.00000
Spatial Representation grid
Spatial Resolution N/A
Related Links

Documentation #1 : 8_1.txt

106.ARCSS161 : is a companion to dataset 106.259
Additional Information N/A
Resource Format TAR: Unix Tape ARchive (TAR) Format File (application/x-tar)
Standardized Resource Format Archive
Asset Size 528 MB
Legal Constraints

none
Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email datahelp@eol.ucar.edu
Resource Support Organization NSF NCAR Earth Observing Laboratory
Distributor NSF NCAR Earth Observing Laboratory
Metadata Contact Name EOL Data Support
Metadata Contact Email datahelp@eol.ucar.edu
Metadata Contact Organization NSF NCAR Earth Observing Laboratory

Author Charles J. Vorosmarty ORCID icon
Richard B. Lammers
Mark C. Serreze ORCID icon
Andrew Etringer
Publisher NSF NCAR Earth Observing Laboratory
Publication Date 2009-05-15T13:38:28
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier 106.259
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-08-01T18:01:58Z
Metadata Record Identifier edu.ucar.eol::106.259
Metadata Language eng; USA
Suggested Citation Charles J. Vorosmarty, Richard B. Lammers, Mark C. Serreze, Andrew Etringer. (2009). ArcticRIMS: Daily Thaw Depth and Frozen Ground Depth, Based on ERA-40 2-meter. 1.0. NSF NCAR Earth Observing Laboratory. https://data.eol.ucar.edu/dataset/106.259. Accessed 23 January 2026.

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