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	A Study of Soil Thermal and Hydraulic Properties and Parameterizations for CLM in the SRYR
	Chen, Jinlei1,2; Wen, Jun3; Tian, Hui1; Zhang, Tangtang1; Yang, Xianyu3; Jia, Dongyu1; Lai, Xin3
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-08-27
卷号	123期号:16页码:8487-8499
ISSN号	2169-897X
DOI	10.1029/2017JD028034
通讯作者	Wen, Jun(jwen@lzb.ac.cn)
英文摘要	Located in the northeast part of the Qinghai-Tibet Plateau, the source region of the Yellow River is a crucial water conservation area. Laboratory tests and observations are used to determine the soil thermal and hydraulic properties in this key area. Furthermore, their physical processes in the Community Land Model (CLM) are revised to better apply to the plateau. The main results are as follows. (1) The thermal conductivity in frozen soil is mainly controlled by the content of air and is positively correlated with subzero temperatures (-5 to -20 degrees C); however, it slightly increases with increasing temperature (5 to 20 degrees C) in thawed soil, and obvious layering exists. The influence of temperature can be ignored for dry soil. (2) The thermal conductivity of thawed soil is positively correlated with water content and shows a nonlinear variation. The rate of increase is rapid during the early stage of thawing and then slows. (3) The saturated hydraulic conductivity decreases with depth. Soil matric potential exhibits large fluctuations and is spatially heterogeneous due to the feedback to soil moisture. (4) The simulation differences of soil temperature and moisture are narrowed to approximately 1 degrees C and by half, respectively, by the revised schemes in CLM4.5. The simulation of energy fluxes and ground temperature also improved, but the latent heat flux performed less well due to the deficiencies in the hydraulic schemes. This study is of great significance for research on land surface processes and the application of the CLM in the Qinghai-Tibet Plateau.
收录类别	SCI
WOS关键词	TIBETAN PLATEAU ; COLD REGIONS ; MOISTURE ; MODEL ; CIRCULATION ; IMPACT ; HEAT
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000445331900007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558299
专题	寒区旱区环境与工程研究所
通讯作者	Wen, Jun
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou, Gansu, Peoples R China 3.Chengdu Univ Informat Technol, Coll Atmospher Sci, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jinlei,Wen, Jun,Tian, Hui,et al. A Study of Soil Thermal and Hydraulic Properties and Parameterizations for CLM in the SRYR[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(16):8487-8499.
APA	Chen, Jinlei.,Wen, Jun.,Tian, Hui.,Zhang, Tangtang.,Yang, Xianyu.,...&Lai, Xin.(2018).A Study of Soil Thermal and Hydraulic Properties and Parameterizations for CLM in the SRYR.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(16),8487-8499.
MLA	Chen, Jinlei,et al."A Study of Soil Thermal and Hydraulic Properties and Parameterizations for CLM in the SRYR".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.16(2018):8487-8499.

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