气候变化领域集成服务门户(CCPortal): Statistically Steady State Large-Eddy Simulations Forced by an Idealized GCM: 1. Forcing Framework and Simulation Characteristics

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DOI	10.1029/2019MS001814
	Statistically Steady State Large-Eddy Simulations Forced by an Idealized GCM: 1. Forcing Framework and Simulation Characteristics
	Shen Z.; Pressel K.G.; Tan Z.; Schneider T.
发表日期	2020
ISSN	19422466
卷号	12 期号:2
英文摘要	Using large-eddy simulations (LES) systematically has the potential to inform parameterizations of subgrid-scale processes in general circulation models (GCMs), such as turbulence, convection, and clouds. Here we show how LES can be run to simulate grid columns of GCMs to generate LES across a cross section of dynamical regimes. The LES setup approximately replicates the thermodynamic and water budgets in GCM grid columns. Resolved horizontal and vertical transports of heat and water and large-scale pressure gradients from the GCM are prescribed as forcing in the LES. The LES are forced with prescribed surface temperatures, but atmospheric temperature and moisture are free to adjust, reducing the imprinting of GCM fields on the LES. In both the GCM and LES, radiative transfer is treated in a unified but idealized manner (semigray atmosphere without water vapor feedback or cloud radiative effects). We show that the LES in this setup reaches statistically steady states without nudging to thermodynamic GCM profiles. The steady states provide training data for developing GCM parameterizations. The same LES setup also provides a good basis for studying the cloud response to global warming. ©2020. The Authors.
语种	英语
scopus关键词	Atmospheric thermodynamics; Budget control; Global warming; Cloud radiative effects; Dynamical regime; General circulation model; Prescribed surface temperatures; Statistically steady state; Sub-grid scale process; Vertical transports; Water vapor feedbacks; Large eddy simulation; climate feedback; climate forcing; general circulation model; large eddy simulation; parameterization; simulation; statistical analysis; steady-state equilibrium; thermodynamics; vertical movement
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/156762
作者单位	Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, CA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Department of the Geophysical Sciences, University of Chicago, Chicago, IL, United States; Jet Propulsion Laboratory, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Shen Z.,Pressel K.G.,Tan Z.,et al. Statistically Steady State Large-Eddy Simulations Forced by an Idealized GCM: 1. Forcing Framework and Simulation Characteristics[J],2020,12(2).
APA	Shen Z.,Pressel K.G.,Tan Z.,&Schneider T..(2020).Statistically Steady State Large-Eddy Simulations Forced by an Idealized GCM: 1. Forcing Framework and Simulation Characteristics.Journal of Advances in Modeling Earth Systems,12(2).
MLA	Shen Z.,et al."Statistically Steady State Large-Eddy Simulations Forced by an Idealized GCM: 1. Forcing Framework and Simulation Characteristics".Journal of Advances in Modeling Earth Systems 12.2(2020).