期刊
GEOPHYSICAL RESEARCH LETTERS
卷 31, 期 12, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2004GL019475
关键词
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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.
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