气候变化领域集成服务门户(CCPortal): A New Frozen Soil Parameterization Including Frost and Thaw Fronts in the Community Land Model

CCPortal

DOI	10.1029/2018MS001399
	A New Frozen Soil Parameterization Including Frost and Thaw Fronts in the Community Land Model
	Gao J.; Xie Z.; Wang A.; Liu S.; Zeng Y.; Liu B.; Li R.; Jia B.; Qin P.; Xie J.
发表日期	2019
ISSN	19422466
起始页码	659
结束页码	679
卷号	11 期号:3
英文摘要	Freeze–thaw processes in soils, including changes in frost and thaw fronts (FTFs), are very sensitive to warming. However, the latest climate models do not predict changes in FTFs directly. In this study, a new frozen soil parameterization including changes in FTFs was incorporated into the Community Land Model version 4.5 for climate modeling, which we denote CLM4.5_FTF. A set of numerical experiments including single points, regions in China, and a global scale were conducted using the model to validate its performance. The simulated FTF depths compare well with observed data from both the D66 station (permafrost) and Hulugou station (seasonally frozen ground). The simulated active layer thickness, defined as the maximum thaw front depth in permafrost, is in general agreement but slightly greater than observations from the Circumpolar Active Layer Monitoring program. The simulated distributions of different types of frozen soil in China and permafrost in the northern hemisphere are in agreement with the frozen soil map of China and the International Permafrost Association map, respectively. The results confirm that the model performs well for FTF simulations. The model was also used for year-long simulations of soil temperature and freeze–thaw processes to check its applicability in continuous simulation. The results show that CLM4.5_FTF performed better than the original model, and the improvement was better for lower levels than for the upper level. Finally, we give simulated latent heat flux, sensible heat flux, and 10-cm soil temperature deviations determined via the couple model with and without the new scheme. ©2019. The Authors.
英文关键词	Frost and Thaw Front; Frozen Soil Parameterization; Land Surface Model; Permafrost
语种	英语
scopus关键词	Climate change; Heat flux; Parameterization; Permafrost; Temperature; Thawing; Community land models; Continuous simulation; Frost and Thaw Front; Land surface modeling; Numerical experiments; Seasonally frozen ground; Simulated distribution; Soil parameterization; Climate models; active layer; climate modeling; frost; frozen ground; latent heat flux; parameterization; permafrost; sensible heat flux; soil temperature; thawing; China
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/156945
作者单位	State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, China; School of Applied Science, Beijing Information and Science Technology University, Beijing, China; Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
推荐引用方式 GB/T 7714	Gao J.,Xie Z.,Wang A.,et al. A New Frozen Soil Parameterization Including Frost and Thaw Fronts in the Community Land Model[J],2019,11(3).
APA	Gao J..,Xie Z..,Wang A..,Liu S..,Zeng Y..,...&Xie J..(2019).A New Frozen Soil Parameterization Including Frost and Thaw Fronts in the Community Land Model.Journal of Advances in Modeling Earth Systems,11(3).
MLA	Gao J.,et al."A New Frozen Soil Parameterization Including Frost and Thaw Fronts in the Community Land Model".Journal of Advances in Modeling Earth Systems 11.3(2019).