气候变化领域集成服务门户(CCPortal): Regional Superparameterization in a Global Circulation Model Using Large Eddy Simulations

CCPortal

DOI	10.1029/2018MS001600
	Regional Superparameterization in a Global Circulation Model Using Large Eddy Simulations
	Jansson F.; van den Oord G.; Pelupessy I.; Grönqvist J.H.; Siebesma A.P.; Crommelin D.
发表日期	2019
ISSN	19422466
起始页码	2958
结束页码	2979
卷号	11 期号:9
英文摘要	As a computationally attractive alternative for global large eddy simulations (LESs), we investigate the possibility of using comprehensive three-dimensional LESs as a superparameterization that can replace all traditional parameterizations of atmospheric processes that are currently used in global models. We present the technical design for a replacement of the parameterization for clouds, convection, and turbulence of the global atmospheric model of the European Centre for Medium-Range Weather Forecasts by the Dutch Atmospheric Large Eddy Simulation model. The model coupling consists of bidirectional data exchange between the global model and the high-resolution LES models embedded within the columns of the global model. Our setup allows for selective superparameterization, that is, for applying superparameterization in local regions selected by the user, while keeping the standard parameterization of the global model intact outside this region. Computationally, this setup can result in major geographic load imbalance, because of the large difference in computational load between superparameterized and nonsuperparameterized model columns. To resolve this issue, we use a modular design where the local and global models are kept as distinct model codes and organize the model coupling such that all the local models run in parallel, separate from the global model. First simulation results, employing this design, demonstrate the potential of our approach. © 2019. The Authors.
英文关键词	large eddy simulation; model coupling; multiscale modeling; superparameterization
语种	英语
scopus关键词	Electronic data interchange; Parameterization; Weather forecasting; Atmospheric process; Computational loads; European centre for medium-range weather forecasts; Global atmospheric models; Global circulation model; Model coupling; Multi-scale Modeling; Superparameterization; Large eddy simulation; atmospheric convection; atmospheric modeling; computer simulation; design; forecasting method; general circulation model; large eddy simulation; parameterization; three-dimensional modeling; turbulence
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/156862
作者单位	Centrum Wiskunde & Informatica, Amsterdam, Netherlands; Netherlands eScience Center, Amsterdam, Netherlands; Physics, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland; Royal Netherlands Meteorological Institute, Afghanistan; Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherlands; Korteweg-de Vries Institute, University of Amsterdam, Amsterdam, Netherlands
推荐引用方式 GB/T 7714	Jansson F.,van den Oord G.,Pelupessy I.,et al. Regional Superparameterization in a Global Circulation Model Using Large Eddy Simulations[J],2019,11(9).
APA	Jansson F.,van den Oord G.,Pelupessy I.,Grönqvist J.H.,Siebesma A.P.,&Crommelin D..(2019).Regional Superparameterization in a Global Circulation Model Using Large Eddy Simulations.Journal of Advances in Modeling Earth Systems,11(9).
MLA	Jansson F.,et al."Regional Superparameterization in a Global Circulation Model Using Large Eddy Simulations".Journal of Advances in Modeling Earth Systems 11.9(2019).