气候变化领域集成服务门户(CCPortal): Impact of resolution on large-eddy simulation of midlatitude summertime convection

CCPortal

DOI	10.5194/acp-20-2891-2020
	Impact of resolution on large-eddy simulation of midlatitude summertime convection
	Moseley C.; Pscheidt I.; Cioni G.; Heinze R.
发表日期	2020
ISSN	1680-7316
起始页码	2891
结束页码	2910
卷号	20 期号:5
英文摘要	We analyze life cycles of summertime moist convection of a large-eddy simulation (LES) in a limited-area setup over Germany. The goal is to assess the ability of the model to represent convective organization in space and time in comparison to radar data and its sensitivity to daily mean surface air temperature. A continuous period of 36 d in May and June 2016 is simulated with a grid spacing of 625 m. This period was dominated by convection over large parts of the domain on most of the days. Using convective organization indices, and a tracking algorithm for convective precipitation events, we find that an LES with 625 m grid spacing tends to underestimate the degree of convective organization and shows a weaker sensitivity of heavy convective rainfall to temperature as suggested by the radar data. An analysis of 3 d with in this period that are simulated with a finer grid spacing of 312 and 156 m showed that a grid spacing at the 100 m scale has the potential to improve the simulated diurnal cycles of convection, the mean time evolution of single convective events, and the degree of convective organization. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	air temperature; algorithm; atmospheric convection; comparative study; diurnal variation; large eddy simulation; midlatitude environment; spatial variation; summer; temporal variation; Germany
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247927
作者单位	Max Planck Institute for Meteorology, Hamburg, Germany; Department of Atmospheric Sciences, National Taiwan University, Taipei City, Taiwan; University of Bonn, Bonn, Germany
推荐引用方式 GB/T 7714	Moseley C.,Pscheidt I.,Cioni G.,et al. Impact of resolution on large-eddy simulation of midlatitude summertime convection[J],2020,20(5).
APA	Moseley C.,Pscheidt I.,Cioni G.,&Heinze R..(2020).Impact of resolution on large-eddy simulation of midlatitude summertime convection.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(5).
MLA	Moseley C.,et al."Impact of resolution on large-eddy simulation of midlatitude summertime convection".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.5(2020).