Kudryavtsev Model

Permafrost Active Layer Thickness Model based on Kudryavtsev's parametrization. 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.

active layer thicknesspermafrostcryosphere

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Contributor(s)

Initial contribute: 2021-09-08

Authorship

:  
University of Colorado
:  
irina.overeem@colorado.edu
:  
University of Colorado
:  
kang.wang@colorado.edu
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Classification(s)

Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesNatural-perspectiveOcean regions
Application-focused categoriesNatural-perspectiveFrozen regions
Application-focused categoriesIntegrated-perspectiveRegional scale

Detailed Description

English {{currentDetailLanguage}} English

Kudryavtsev's method assumes that annual variations of the air temperature can be described by the periodic  function: 

where Aa is the annual amplitude of the air temperature, Ta is mean annual air temperature, t is time, and P is  the period of the temperature cycle (1 yr). The layer of mineral soil is considered to be a homogeneous medium  with different thermal properties in the frozen and thawed states; this layer underlies three additional layers: an  organic-rich surface horizon, vegetation, and snow. The following semi-empirical equation for the depth of seasonal thawing or freezing can be applied (Kudryavtsev et al., 1974): 

Quoted from : Global warming and active-layer thickness: results from transient  general circulation models. 

模型元数据

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Irina Overeem, Kang Wang (2021). Kudryavtsev Model, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/40431ec0-f4fa-45fd-bb31-025ed0f31541
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Contributor(s)

Initial contribute : 2021-09-08

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Authorship

:  
University of Colorado
:  
irina.overeem@colorado.edu
:  
University of Colorado
:  
kang.wang@colorado.edu
Is authorship not correct? Feed back

History

Last modifier
Yihan Zhang
Last modify time
2021-09-18
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