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DOI	10.1002/2015JD024451
	Development of an enthalpy-based frozen soil model and its validation in a cold region in China
	Bao, Huiyi; Koike, Toshio; Yang, Kun; Wang, Lei; Shrestha, Maheswor; Lawford, Peter
通讯作者	Bao, HY (通讯作者)
发表日期	2016
ISSN	2169-897X
EISSN	2169-8996
起始页码	5259
结束页码	5280
卷号	121 期号:10
英文摘要	An enthalpy-based frozen soil model was developed for the simulation of water and energy transfer in cold regions. To simulate the soil freezing/thawing processes stably and efficiently, a three-step algorithm was applied to solve the nonlinear governing equations: (1) a thermal diffusion equation was implemented to simulate the heat conduction between soil layers; (2) a freezing/thawing scheme used a critical temperature criterion to judge the phase status and introduced enthalpy and total water mass into freezing depression equation to represent ice formation/melt and corresponding latent heat release/absorption; and (3) a water flow scheme was employed to describe the liquid movement within frozen soil. In addition, a parameterization set of hydraulic and thermal properties was updated by considering the frozen soil effect. The performance of the frozen soil model was validated at point scale in a typical mountainous permafrost basin of China. An ice profile initialization method is proposed for permafrost modeling. Results show that the model can achieve a convergent solution at a time step of hourly and a surface layer thickness of centimeters that are typically used in current land surface models. The simulated profiles of soil temperature, liquid water content, ice content and thawing front depth are in good agreement with the observations and the characteristics of permafrost. The model is capable of continuously reproducing the diurnal and seasonal freeze-thaw cycle and simulating frozen soil hydrological processes.
关键词	DISTRIBUTED HYDROLOGICAL MODEL SIMULTANEOUS HEAT PERMAFROST REGION CLIMATE-CHANGE WATER MODEL PARAMETERIZATION TEMPERATURE SIMULATION SNOW CONDUCTIVITY
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000381629900009
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258700
推荐引用方式 GB/T 7714	Bao, Huiyi,Koike, Toshio,Yang, Kun,et al. Development of an enthalpy-based frozen soil model and its validation in a cold region in China[J]. 中国科学院青藏高原研究所,2016,121(10).
APA	Bao, Huiyi,Koike, Toshio,Yang, Kun,Wang, Lei,Shrestha, Maheswor,&Lawford, Peter.(2016).Development of an enthalpy-based frozen soil model and its validation in a cold region in China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(10).
MLA	Bao, Huiyi,et al."Development of an enthalpy-based frozen soil model and its validation in a cold region in China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.10(2016).