气候变化领域集成服务门户(CCPortal): Parameterizing Subgrid Variations of Land Surface Heat Fluxes to the Atmosphere Improves Boreal Summer Land Precipitation Simulation With the NCAR CESM1.2

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DOI	10.1029/2020GL090715
	Parameterizing Subgrid Variations of Land Surface Heat Fluxes to the Atmosphere Improves Boreal Summer Land Precipitation Simulation With the NCAR CESM1.2
	Sun W.; Wang B.; Wang Y.; Zhang G.J.; Han Y.; Wang X.; Yang M.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	Subgrid horizontal variations of land surface heat fluxes to the atmosphere resulting from subgrid land cover heterogeneity are important in land-atmosphere interaction in global climate models (GCMs). To incorporate it, a parameterization using stochastic sampling based on truncated normal distributions diagnosed from the land model and internal ensemble mean of multiple calls to the planetary boundary layer and deep convection schemes is developed. After its implementation in the National Center for Atmospheric Research (NCAR) Community Earth System Model version 1.2 (CESM1.2), large changes of simulated land precipitation are found to occur in regions where large subgrid variations of surface heat fluxes exist. The simulated precipitation is improved in boreal summer, especially over eastern China and the coastal areas of the Bay of Bengal. The improved precipitation is mainly a result of improved large-scale moisture convergence and advection by altered vertical diffusion and convection. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Boundary layers; Climate models; Normal distribution; Stochastic models; Stochastic systems; Surface measurement; Global climate model; Horizontal variation; Land atmosphere interaction; Land surface heat fluxes; Moisture convergence; National center for atmospheric researches; Planetary boundary layers; Truncated normal distributions; Heat flux
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169251
作者单位	Ministry of Education Key Laboratory for Earth System Modeling & Department of Earth System Science, Tsinghua University, Beijing, China; State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; Scripps Institution of Oceanography, La Jolla, CA, United States; Key Laboratory of Humid Subtropical Ecogeographical Process, Ministry of Education, Fujian Normal University, Fuzhou, China
推荐引用方式 GB/T 7714	Sun W.,Wang B.,Wang Y.,et al. Parameterizing Subgrid Variations of Land Surface Heat Fluxes to the Atmosphere Improves Boreal Summer Land Precipitation Simulation With the NCAR CESM1.2[J],2021,48(1).
APA	Sun W..,Wang B..,Wang Y..,Zhang G.J..,Han Y..,...&Yang M..(2021).Parameterizing Subgrid Variations of Land Surface Heat Fluxes to the Atmosphere Improves Boreal Summer Land Precipitation Simulation With the NCAR CESM1.2.Geophysical Research Letters,48(1).
MLA	Sun W.,et al."Parameterizing Subgrid Variations of Land Surface Heat Fluxes to the Atmosphere Improves Boreal Summer Land Precipitation Simulation With the NCAR CESM1.2".Geophysical Research Letters 48.1(2021).