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Earth Observing Laboratory
Field Data Archive

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

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Summary

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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Additional information

Identifier
Versions
  • 1.0 (2009-05-15)
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Spatial Type grid
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Language English
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
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Temporal coverage

Begin datetime 1970-01-01 00:00:00
End datetime 2001-12-31 00:00:00

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 90.00, Minimum (South) Latitude: 45.00
Minimum (West) Longitude: -180.00, Maximum (East) Longitude: 180.00

Primary point of contact information

Richard B. Lammers <richard.lammers@unh.edu>

Additional contact information

Citation

Vorosmarty, C., et al. 2009. ArcticRIMS: Daily Thaw Depth and Frozen Ground Depth, Based on ERA-40 2-meter. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6ST7MZ0. Accessed 04 Dec 2024.

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NSF

This material is based upon work supported by the NSF National Center for Atmospheric Research, a major facility sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the U.S. National Science Foundation.