Frost Model

Frost model predicts the likelihood of occurrence of permafrost in the land surface based on the monthly temperature distribution. This model implement the calculation of the 'Frost Number', a dimensionless ratio based on freezing and thawing degree days in the year. Specifically, the 'Air Frost Number' intents to predict the existence of permafrost at a given location based on a cosine-function approximating the annual temperature distribution.

annual temperaturecryospherepermafrost

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Contributor(s)

Initial contribute: 2021-09-16

Authorship

:  
CSDMS
:  
irina.overeem@colorado.edu
:  
CSDMS
:  
scottincolorado@gmail.com
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Classification(s)

Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesNatural-perspectiveFrozen regions

Detailed Description

English {{currentDetailLanguage}} English

The "frost number," a dimensionless ratio defined by manipulation of either freezing and thawing degree-day sums or frost and thaw penetration depths, can be used to define an unambiguous latitudinal zonation of permafrost continuity. The index is computed using several variables influencing the depth of frost and thaw penetration, and can be related mathematically to the existence and continuity of permafrost. Although the frost number is a useful device for portraying the distribution of contemporary permafrost at continental scales, it is not capable of detecting relict permafrost and should not be mapped over small areas unless numerous climate stations are located in the region of interest

Quoted from : A COMPUTATIONAL METHOD FOR PREDICTION AND REGIONALIZATION OF PERMAFROST

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Irina Overeem, Scott Stewart (2021). Frost Model, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/6ba081d2-4f7a-49ea-b2b5-8cb079844cb3
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Contributor(s)

Initial contribute : 2021-09-16

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Authorship

:  
CSDMS
:  
irina.overeem@colorado.edu
:  
CSDMS
:  
scottincolorado@gmail.com
Is authorship not correct? Feed back

History

Last modifier
Yihan Zhang
Last modify time
2021-09-16
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