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	Comparison of the thermal conductivity parameterizations for a freeze-thaw algorithm with a multi-layered soil in permafrost regions
	Hu, Guojie; Zhao, Lin3; Wu, Xiaodong; Li, Ren; Wu, Tonghua; Xie, Changwei; Pang, Qiangqiang; Zou, Defu
刊名	CATENA
	2017-09-01
卷号	156页码:244-251
关键词	Soil thermal conductivity Freeze-thaw depth Multi-layered soil Permafrost Tibet Plateau
ISSN号	0341-8162
DOI	10.1016/j.catena.2017.04.011
通讯作者	Zhao, Lin(linzhao@lzb.ac.cn)
英文摘要	Soil thermodynamic properties are critical for determining the soil freezing and thawing depths of active layers which is highly important for the hydrology and energy balances of permafrost regions. Here, three soil thermal conductivity parameterizations were evaluated against detailed field measurements at two field sites in the permafrost region of Qinghai-Xizang (Tibet) Plateau (QXP). The results revealed that the comprehensive parameterization based on different schemes for calculating soil thermal conductivity is relatively close to the measured values in unfrozen soil, and Johansen's parameterization is the best in the frozen soil. Then, we first combined three thermal conductivity parameterizations with a freeze-thaw algorithm to simulate freezing and thawing depths of multi-layered soil. The analysis showed that the average percentage difference between the observed and calculated soil thawing depth values for the Johansen's and comprehensive parameterization was 10.42% and 8.49% at Tanggula (TGL) and. Xidatan (XDT), receptively. It indicated that the comprehensive parameterization with freeze-thaw algorithm simulated the soil thawing depth more similarly to the observed data for multi-layered soil. These findings can also be incorporated into other land surface, hydrological or ecosystem models to simulate the freeze-thaw cycles in permafrost regions.
收录类别	SCI
WOS关键词	TIBETAN PLATEAU ; SURFACE TEMPERATURES ; NUMERICAL-MODEL ; CLIMATE-CHANGE ; ACTIVE LAYER ; FROZEN SOIL ; MOISTURE ; HEAT ; SIMULATION ; COLD
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000404305700025
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557732
专题	寒区旱区环境与工程研究所
通讯作者	Zhao, Lin
作者单位	1.Chinese Acad Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Peoples R China 2.State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Hu, Guojie,Zhao, Lin,Wu, Xiaodong,et al. Comparison of the thermal conductivity parameterizations for a freeze-thaw algorithm with a multi-layered soil in permafrost regions[J]. CATENA,2017,156:244-251.
APA	Hu, Guojie.,Zhao, Lin.,Wu, Xiaodong.,Li, Ren.,Wu, Tonghua.,...&Zou, Defu.(2017).Comparison of the thermal conductivity parameterizations for a freeze-thaw algorithm with a multi-layered soil in permafrost regions.CATENA,156,244-251.
MLA	Hu, Guojie,et al."Comparison of the thermal conductivity parameterizations for a freeze-thaw algorithm with a multi-layered soil in permafrost regions".CATENA 156(2017):244-251.

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