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    Arctic LCC Coordinator

    U.S. Fish & Wildlife Service
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    Anchorage, Alaska 99503
    (907) 786-3532
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    Arctic LCC Data Manager

    U.S. Fish & Wildlife Service
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Simulated Active Layer Thickness

Summary:

These raster datasets are output from the Geophysical Institute Permafrost Lab (GIPL) model and represent simulated active layer thickness (ALT) in meters averaged across a decade. These data were generated by driving the GIPL model with a composite of five GCM model outputs for the A1B emissions scenario. 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. These rasters cover the entire state of Alaska and have a spatial resolution of 2km.

Project Link:

Integrated Ecosystem Model (AIEM) for Alaska

Metadata:

Active Layer Thickness metadata - 11 KB

Products:
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Title Active Layer Thickness 1980-1989
Download Link ActiveLayerThickness_1980_1989.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 1980 - 1989.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 1990-1999
Download Link ActiveLayerThickness_1990_1999.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 1990 - 1999.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2000-2009
Download Link ActiveLayerThickness_2000_2009.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2000 - 2009.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2010-2019
Download Link ActiveLayerThickness_2010_2019.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2010 - 2019.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2020-2029
Download Link ActiveLayerThickness_2020_2029.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2020 - 2029.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2030-2039
Download Link ActiveLayerThickness_2030_2039.zipZIP compressed file - 1.6 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2030 - 2039.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2040 2049
Download Link ActiveLayerThickness_2040_2049.zipZIP compressed file - 1.6 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2040 - 2049.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2050-2059
Download Link ActiveLayerThickness_2050_2059.zipZIP compressed file - 1.6 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2050 - 2059.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2060-2069
Download Link ActiveLayerThickness_2060_2069.zipZIP compressed file - 1.6 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2060 - 2069.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2070-2079
Download Link ActiveLayerThickness_2070_2079.zipZIP compressed file - 1.6 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2070 - 2079.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
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Title Active Layer Thickness 2080-2089
Download Link ActiveLayerThickness_2080_2089.zipZIP compressed file - 1.5 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2080 - 2089.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm
Preview
Image by Arctic LCC Staff.
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Title Active Layer Thickness 2090-2099
Download Link ActiveLayerThickness_2090_2099.zipZIP compressed file - 1.2 MB
Metadata Link Active Layer Thickness metadata - 11 KB
DescriptionSimulated active layer thickness (ALT) in meters averaged across 2090 - 2099.
Date CreatedSeptember 29, 2011 8:30 am
Last UpdatedNovember 2, 2015 5:55 pm