气候变化领域集成服务门户(CCPortal): New Critical Length for the Onset of Self-Aggregation of Moist Convection

CCPortal

DOI	10.1029/2020GL088763
	New Critical Length for the Onset of Self-Aggregation of Moist Convection
	Yanase T.; Nishizawa S.; Miura H.; Takemi T.; Tomita H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Convective self-aggregation (CSA) in an idealized modeling framework is key to understanding the role of clouds. To investigate the existence of characteristic length of CSA onset, we conducted systematic cloud-resolving simulations, with a scope covering the horizontal domain size and resolution. In the high-resolution simulation, CSA can occur with a square domain larger than ~500 km. Based on the competition between two near-surface horizontal divergent flows, we discuss the characteristic length existence. While the flow induced by radiative cooling in the subsidence region acts as positive feedback for moisture perturbation and scales with the domain size, the other flow induced by evaporative cooling of falling rain in the convective region acts as negative feedback and does not scale. The study suggests characteristic length existence for the organization of moist convection, even in real-world conditions. ©2020. The Authors.
英文关键词	Evaporative cooling systems; Characteristic length; Cloud resolving simulations; Critical length; Evaporative cooling; High resolution simulations; Idealized models; Moist convection; Self aggregation; Radiative Cooling; atmospheric convection; convective cloud; convective system; cooling; moisture content; radiative forcing; simulation
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/169942
作者单位	RIKEN Center for Computational Science, Kobe, Japan; Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan; Graduate School of Science, Kyoto University, Kyoto, Japan; Graduate School of Science, University of Tokyo, Tokyo, Japan; RIKEN Cluster for Pioneering Research, Kobe, Japan
推荐引用方式 GB/T 7714	Yanase T.,Nishizawa S.,Miura H.,et al. New Critical Length for the Onset of Self-Aggregation of Moist Convection[J],2020,47(16).
APA	Yanase T.,Nishizawa S.,Miura H.,Takemi T.,&Tomita H..(2020).New Critical Length for the Onset of Self-Aggregation of Moist Convection.Geophysical Research Letters,47(16).
MLA	Yanase T.,et al."New Critical Length for the Onset of Self-Aggregation of Moist Convection".Geophysical Research Letters 47.16(2020).