Model:Kudryavtsev Model

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Kudryavtsev Model

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Ku Model Model type Single Model part of larger framework Note on status model Date note status model Incorporated models or components: Spatial dimensions 1D, 1.5D, 2D Spatial extent Regional-Scale Model domain Terrestrial, Hydrology, Cryosphere One-line model description Permafrost Active Layer Thickness Model based on Kudryavtsev's parametrization Extended model description Models the temporal and spatial distribution of the active layer thickness and temperature of permafrost soils. The underlying approximation accounts for effects of air temperature, snow cover, vegatation, soil moisture, soil thermal properties to predict temperature at the ground surface and mean active layer thickness. Keywords: active layer thickness, permafrost, cryosphere, Name Irina Overeem Type of contact Project manager Institute / Organization University of Colorado Postal address 1 4001 Discovery Dr. Postal address 2 Town / City Boulder Postal code 80303 State Colorado Country United States Email address irina.overeem@colorado.edu Phone +1-303-4926631 Fax Name Kang Wang Type of contact Technical contact Institute / Organization University of Colorado Postal address 1 4001 Discovery Dr. Postal address 2 Town / City Boulder Postal code State Colorado Country United States Email address kang.wang@colorado.edu Phone Fax Supported platforms Unix, Linux, Mac OS Other platform Programming language Python Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2016 Does model development still take place? Yes If above answer is no, provide end year model development Code development status Active When did you indicate the 'code development status'? 2020 Model availability As code, As teaching tool Source code availability (Or provide future intension) Through web repository Source web address https://github.com/permamodel Source csdms web address Program license type BSD or MIT X11 Program license type other Memory requirements N/A Typical run time fast Describe input parameters Air Temperature : seasonal range of air temperature Snow parameters: winter-averaged Snow Thickness and Snow Density, thermal conductivity of snow Vegetation parameters: Vegetation height, vegetation thermal conductivity Soil properties: volumetric water content, heat capacity in frozen and thawed state Input format Other input format NetCDF Describe output parameters Dampening effects of vegetation and snow on temperature Mean annual active layer thickness Mean annual temperature at the permafrost ground surface Output format Other output format NetCDF Pre-processing software needed? No Describe pre-processing software Post-processing software needed? Yes Describe post-processing software Visualization of NetCDF files Visualization software needed? Yes If above answer is yes Other visualization software Any NetCDF visualization codesPanoply Describe processes represented by the model Kudryavtsev's parametrization treats a permafrost environment as a system of individual layers, each with their own thermal properties. Air, snow, vegetation, soil each are separate layers and their thermal (insulatory effects) are quantified from layer thickness, their heat capacity and conductivity. Describe key physical parameters and equations Describe length scale and resolution constraints Solutions are generated for a 1D vertical column. When input data are gridded, maps of 1D vertical columns can be made. Describe time scale and resolution constraints yearly Describe any numerical limitations and issues analytical solution Describe available calibration data sets Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? This model is part of the perma-model project which aims to built flexible cyberinfrastructure for permafrost modeling. Close collaborators include: Elchin Jafarov at Los Alamos National Lab, NM Kevin Schaeffer at National Snow and Ice Data Center, Boulder, CO Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments This part will be filled out by CSDMS staff OpenMI compliant No not possible BMI compliant Yes WMT component Yes PyMT component Yes Is this a data component Can be coupled with:

Model info Authors Irina Overeem Wang Source code Go to external source code site Model citations Nr. of publications: -- Total citations: 0 h-index: --"--" is not a number. m-quotient: 0 QR-code Link to this page Other models by author AquaTellUs CMIP Frost Model Kudryavtsev Model River Temperature Model

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See also Model:Frost Model, another model in the Permamodel project.

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Total citations:	0
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Featured publication(s)	Year	Model described	Type of Reference	Citations
Anisimov, Oleg A.; Shiklomanov, Nikolai I.; Nelson, Frederick E.; 1997. Global warming and active-layer thickness: results from transient general circulation models. Global and Planetary Change, 15, 61–77. 10.1016/S0921-8181(97)00009-X (View/edit entry)	1997	Kudryavtsev Model	Related theory	199
Sazonova, T. S.; Romanovsky, V. E.; 2003. A model for regional-scale estimation of temporal and spatial variability of active layer thickness and mean annual ground temperatures. Permafrost and Periglacial Processes, 14, 125–139. 10.1002/ppp.449 (View/edit entry)	2003	GIPL Kudryavtsev Model	Related theory	114
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