气候变化领域集成服务门户(CCPortal): Evaluation of Soil Thermal Conductivity Schemes for Use in Land Surface Modeling

CCPortal

DOI	10.1029/2019MS001723
	Evaluation of Soil Thermal Conductivity Schemes for Use in Land Surface Modeling
	Dai Y.; Wei N.; Yuan H.; Zhang S.; Shangguan W.; Liu S.; Lu X.; Xin Y.
发表日期	2019
ISSN	19422466
起始页码	3454
结束页码	3473
卷号	11 期号:11
英文摘要	Soil thermal conductivity (STC) is an important physical parameter in modeling land surface processes. Previous studies on evaluations of STC schemes are mostly based on direct measurements of local conditions, and their recommendations cannot be used as a reference in selecting STC schemes for land modeling use. In this work, seven typical STC schemes are incorporated into the Common Land Model to evaluate their applications in land surface modeling. Statistical analyses show that the Johansen (1975) scheme and its three derivatives, Côté and Konrad (2005, https://doi.org/10.1139/t04-106), Balland and Arp (2005, https://doi.org/10.1139/s05-007), and Lu et al. (2007, https://doi.org/10.2136/sssaj2006.0041), are significantly superior to the other schemes with respect to both STC estimations and their applications in modeling soil temperature and the partitioning of surface available energy in the Common Land Model. The Balland and Arp (2005, https://doi.org/10.1139/s05-007) scheme ranks at the top among the selected schemes. Uncertainty analyses based on single-point and global simulations both show that the differences in STC estimations can induce significant differences in simulated soil temperature in arid/semiarid and seasonally frozen regions, especially at deep layers. The hydrology-related variables are slightly affected by STC variations, but slight changes in these variables can induce notable changes in soil temperature by altering soil thermal properties. These results emphasize the important role of STC in modeling soil thermodynamics and suggest the necessity of further developing STC schemes based on land modeling applications. According to the evaluation analyses, we recommend the Balland and Arp (2005, https://doi.org/10.1139/s05-007) scheme as a more suitable selection for use in land surface models. ©2019. The Authors.
英文关键词	Land surface modeling; Performance evaluation; Soil thermal conductivity schemes; Uncertainties analyses
语种	英语
scopus关键词	HTTP; Soils; Surface measurement; Temperature; Thermal conductivity; Land surface modeling; Land surface models; Land-surface process; Performance evaluation; Physical parameters; Soil thermal conductivity; Soil thermal properties; Uncertainties analyses; Uncertainty analysis; common land; land surface; performance assessment; soil temperature; thermal conductivity; thermodynamics; uncertainty analysis
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156841
作者单位	Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China
推荐引用方式 GB/T 7714	Dai Y.,Wei N.,Yuan H.,et al. Evaluation of Soil Thermal Conductivity Schemes for Use in Land Surface Modeling[J],2019,11(11).
APA	Dai Y..,Wei N..,Yuan H..,Zhang S..,Shangguan W..,...&Xin Y..(2019).Evaluation of Soil Thermal Conductivity Schemes for Use in Land Surface Modeling.Journal of Advances in Modeling Earth Systems,11(11).
MLA	Dai Y.,et al."Evaluation of Soil Thermal Conductivity Schemes for Use in Land Surface Modeling".Journal of Advances in Modeling Earth Systems 11.11(2019).