A two-directional freeze and thaw algorithm for hydrologic and land surface modelling

被引：71

作者：

Woo, MK ^{[1
]}

Arain, MA ^{[1
]}

Mollinga, M ^{[1
]}

Yi, S ^{[1
]}

机构：

[1] McMaster Univ, Sch Geog & Geol, Hamilton, ON L8S 4K1, Canada

来源：

GEOPHYSICAL RESEARCH LETTERS | 2004年 / 31卷 / 12期

关键词：

D O I：

10.1029/2004GL019475

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

This paper presents a two-directional Stefan's solution for computing the freeze and thaw of soil columns. Use of an inverted set of equations to drive the soil freeze-thaw from the bottom is a significant improvement to the original freeze-thaw model. Simulations using the algorithm compared well with the 0 degreesC isotherm interpolated from observed data at Arctic, Subarctic and cool temperate sites with different frost conditions that range from permafrost to seasonal frost across a north-south gradient in North America. The incorporation of explicit freeze-thaw parameterization in hydrologic and land surface models would enable realistic simulation of soil temperature, soil moisture and runoff/infiltration and hence energy, water and greenhouse gas exchange processes in high latitudes.

引用

页码：L125011 / 4

页数：4

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