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Active Layer Thickness 2090-2099

Dates

Last Update
2015-11-02
Publication Date
2011-09-29
Time span for which resource(dataset) is relevant.
2012-01-01
Time span for which resource(dataset) is relevant.
2012-02-01

Citation

LCC Network Data Steward(Point of Contact), Arctic Landscape Conservation Cooperative(administrator), 2015-11-02(lastUpdate), 2011-09-29(Publication), Active Layer Thickness 2090-2099, http://arcticlcc.org/products/e847b2d0-d851-40a6-9780-2edf1fbfe61a, https://www.sciencebase.gov/catalog/item/5a300bdbe4b08e6a89d57dc6

Summary

The Geophysical Institute Permafrost Lab (GIPL) model was developed specifically to assess the effect of a changing climate on permafrost. The GIPL 1.0 model is a quasi-transitional, spatially distributed, equilibrium model for calculating the active layer thickness and mean annual ground temperature. The GIPL-1 model accounts effectively for the effects of snow cover, vegetation, soil moisture, and soil thermal properties. The GIPL-1 model allows for the calculation of maximum active layer thickness (ALT) and mean annual ground temperatures (MAGT) at the bottom of the active layer. The approach to determine the ALT and MAGT is based on an approximate analytical solution that includes freezing/thawing processes and provides an estimation [...]

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Attached Files

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ActiveLayerThickness_2090_2099.zip 1.17 MB
md_metadata.json 228.68 KB
metadata.xml
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1.28 MB

Material Request Instructions

Arctic Landscape Conservation Cooperative(Data Owner)

Purpose

This raster, created in 2010, is output from the Geophysical Institute Permafrost Lab (GIPL) model and represents simulated active layer thickness (ALT) in meters averaged across a decade. The file name specifies the decade the raster represents. For example, a file named ALT_1980_1989.tif represents the decade spanning 1980-1989. Cell values represent simulated maximum depth (in meters) of thaw penetration (for areas with permafrost) or frost penetration (for areas without permafrost). If the value of the cell is positive, the area is underlain by permafrost and the cell value specifies the depth of the seasonally thawing layer above permafrost. If the value of the cell is negative, the ground is only seasonally frozen and the cell value specifies the depth of seasonal frost. The raster covers the entire state of Alaska and has a spatial resolution of 2 x 2km. These data were generated by forcing the GIPL model with a composite of five GCM model outputs (ECHAM5, GFLD21, MIROC, HADLEY and CCCMA) for the A1B emissions scenario.

Additional Information

Identifiers

Type Scheme Key
urn:uuid urn:uuid e847b2d0-d851-40a6-9780-2edf1fbfe61a

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