气候变化领域集成服务门户(CCPortal): Convective self-aggregation in a mean flow

CCPortal

DOI	10.5194/acp-21-10337-2021
	Convective self-aggregation in a mean flow
	Jung H.; Naumann A.K.; Stevens B.
发表日期	2021
ISSN	1680-7316
起始页码	10337
结束页码	10345
卷号	21 期号:13
英文摘要	Convective self-aggregation is an atmospheric phenomenon seen in numerical simulations in a radiative convective equilibrium framework thought to be informative of some aspects of the behavior of real-world convection in the deep tropics. We impose a background mean wind flow on convection-permitting simulations through the surface flux calculation in an effort to understand how the asymmetry imposed by a mean wind influences the propagation of aggregated structures in convection. The simulations show that, with imposing mean flow, the organized convective system propagates in the direction of the flow but slows down compared to what pure advection would suggest, and it eventually becomes stationary relative to the surface after 15 simulation days. The termination of the propagation arises from momentum flux, which acts as a drag on the near-surface horizontal wind. In contrast, the thermodynamic response through the wind-induced surface heat exchange feedback is a relatively small effect, which slightly retards the propagation of the convection relative to the mean wind. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric convection; computer simulation; convective system; drag; radiative forcing; surface flux
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/246748
作者单位	Max Plank Institute for Meteorology, Hamburg, Germany; The Institute of Meteorology and Climate Research (IMK-TRO), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
推荐引用方式 GB/T 7714	Jung H.,Naumann A.K.,Stevens B.. Convective self-aggregation in a mean flow[J],2021,21(13).
APA	Jung H.,Naumann A.K.,&Stevens B..(2021).Convective self-aggregation in a mean flow.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(13).
MLA	Jung H.,et al."Convective self-aggregation in a mean flow".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.13(2021).