气候变化领域集成服务门户(CCPortal): Representing Intrahillslope Lateral Subsurface Flow in the Community Land Model

CCPortal

DOI	10.1029/2019MS001833
	Representing Intrahillslope Lateral Subsurface Flow in the Community Land Model
	Swenson S.C.; Clark M.; Fan Y.; Lawrence D.M.; Perket J.
发表日期	2019
ISSN	19422466
起始页码	4044
结束页码	4065
卷号	11 期号:12
英文摘要	The concept of using representative hillslopes to simulate hydrologically similar areas of a catchment has been incorporated in many hydrologic models but few Earth system models. Here we describe a configuration of the Community Land Model version 5 in which each grid cell is decomposed into one or more multicolumn hillslopes. Within each hillslope, the intercolumn connectivity is specified, and the lateral saturated subsurface flow from each column is passed to its downslope neighbor. We first apply the model to simulate a headwater catchment and assess the results against runoff and evapotranspiration flux measurements. By redistributing soil water within the catchment, the model is able to reproduce the observed difference between evapotranspiration in the upland and lowland portions of the catchment. Next, global simulations based on hypothetical hillslope geomorphic parameters are used to show the model's sensitivity to differences in hillslope shape and discretization. Differences in evapotranspiration between upland and lowland hillslope columns are found to be largest in arid and semiarid regions, while humid tropical and high-latitude regions show limited evapotranspiration increases in lowlands relative to uplands. ©2019. The Authors.
英文关键词	ESM; hillslope hydrology; lateral flow
语种	英语
scopus关键词	Arid regions; Evapotranspiration; Landforms; Runoff; Soil moisture; Arid and semi-arid regions; Community land models; Geomorphic parameters; Headwater catchment; High-latitude regions; Hillslope hydrology; Lateral Flow; Lateral subsurface flow; Catchments; catchment; connectivity; evapotranspiration; geomorphological response; headwater; hillslope; soil water; subsurface flow
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/156812
作者单位	Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Centre for Hydrology and Canmore Coldwater Lab, University of Saskatchewan, Canmore, AB, Canada; Department of Earth and Planetary Sciences, Rutgers University, New Brunswick, NJ, United States; Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Swenson S.C.,Clark M.,Fan Y.,et al. Representing Intrahillslope Lateral Subsurface Flow in the Community Land Model[J],2019,11(12).
APA	Swenson S.C.,Clark M.,Fan Y.,Lawrence D.M.,&Perket J..(2019).Representing Intrahillslope Lateral Subsurface Flow in the Community Land Model.Journal of Advances in Modeling Earth Systems,11(12).
MLA	Swenson S.C.,et al."Representing Intrahillslope Lateral Subsurface Flow in the Community Land Model".Journal of Advances in Modeling Earth Systems 11.12(2019).