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Modeling Permafrost – a CMT component

Modeling Permafrost – a CMT component. Elchin Jafarov Vladimir Romanovsky Sergei Marchenko Geophysical Institute University of Alaska Fairbanks Boulder, October, 2011. Frozen Soil (Permafrost). Thawing Permafrost. http://www.libraryindex.com/pages/3372/Permafrost.html

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Modeling Permafrost – a CMT component

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  1. Modeling Permafrost – a CMT component Elchin Jafarov Vladimir Romanovsky Sergei Marchenko Geophysical Institute University of Alaska Fairbanks Boulder, October, 2011

  2. Frozen Soil (Permafrost)

  3. Thawing Permafrost http://www.libraryindex.com/pages/3372/Permafrost.html http://ipy.arcticportal.org/index.php?/ipy/detail/permafrost/ http://nasadaacs.eos.nasa.gov/articles/2005/2005_permafrost.html

  4. Measurements

  5. Soil Moisture Soil texture by grain size table Neil Davis “Permafrost”

  6. Mathematical Model

  7. Active Layer Thickness Ice-nucleation temperature Cryotic Noncryotic Partially Frozen Frozen Unfrozen Water content Unfrozen water content Freezing point depression T < 0oC T > 0oC 0oC C.R. Burn. (1999). The Active Layer: Two Contrasting Definition.

  8. Active Layer Thickness Ice-nucleation temperature Cryotic Noncryotic Partially Frozen Frozen Unfrozen Saturation coeff. Water content Unfrozen water content Freezing point depression T < 0oC T > 0oC 0oC C.R. Burn. (1999). The Active Layer: Two Contrasting Definition.

  9. GIPL2-MPI The GIPL-MPI model schematic diagram. S. Marchenko (2008)

  10. Input Datasets Monthly averaged air temperature (oC) during January 1980 (SNAP). • The GCMs composite was downscaled to 2 by 2 km resolution using knowledge-based system PRISM. Monthly averaged precipitation (mm) during January 1980 (SNAP).

  11. Input Datasets Karlstrom, T.N.V., et al., 1964. Surficial geology of Alaska. U.S. Geol.Surv., Misc. Geol. Inv. Map I-357, scale 1:1,584,000

  12. Calibration and Validation

  13. Results

  14. Results Projections of the decadal average MAGT at 2 m depth

  15. GIPL CMT component GIPL in CMT

  16. Coupling TopoFlow with GIPL2 Topoflow GIPL ET Runoff INF Thawed VWC f/t depth Frozen

  17. Acknowledgments Funding & State of Alaska

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