气候变化领域集成服务门户(CCPortal): Calculation of supersaturation maximum and droplet concentration at cloud boundaries

CCPortal

DOI	10.1016/j.atmosres.2019.104694
	Calculation of supersaturation maximum and droplet concentration at cloud boundaries
	Pinsky M.; Khain A.
发表日期	2020
ISSN	0169-8095
卷号	234
英文摘要	Most parameterizations of droplet concentration at cloud base in cloud models are derived under the assumption that all droplets at the cloud base form by nucleation of dry CCN crossing the lifting condensation level in updraft. In this study, a novel method of calculation of the supersaturation maximum and droplet concentration at cloud base is described that takes into account the existence of liquid at the level of droplet nucleation. Liquid exists in haze particles, as well as in the form of cloud droplets and raindrops. It is shown that the presence of liquid water inside non-activated CCN, as well as of cloud droplets and raindrops substantially decreases supersaturation maximum in case of high aerosol concentration. The possible effect of the supersaturation maximum decrease on formation of DSD in clouds is discussed. The method can be also applied to calculation of supersaturation and droplet nucleation at cloud edges. © 2019
英文关键词	Cloud base supersaturation maximum; Droplet concentration; Nucleation
学科领域	Liquids; Nucleation; Supersaturation; Aerosol concentration; Cloud base; Cloud droplets; Droplet concentration; Droplet nucleation; Haze particles; Lifting condensation levels; Method of calculation; Drops; aerosol; cloud droplet; cloud microphysics; concentration (composition); nucleation; supersaturation
语种	英语
scopus关键词	Liquids; Nucleation; Supersaturation; Aerosol concentration; Cloud base; Cloud droplets; Droplet concentration; Droplet nucleation; Haze particles; Lifting condensation levels; Method of calculation; Drops; aerosol; cloud droplet; cloud microphysics; concentration (composition); nucleation; supersaturation
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120522
作者单位	Department of Atmospheric Sciences, The Hebrew University of Jerusalem, Israel
推荐引用方式 GB/T 7714	Pinsky M.,Khain A.. Calculation of supersaturation maximum and droplet concentration at cloud boundaries[J],2020,234.
APA	Pinsky M.,&Khain A..(2020).Calculation of supersaturation maximum and droplet concentration at cloud boundaries.Atmospheric Research,234.
MLA	Pinsky M.,et al."Calculation of supersaturation maximum and droplet concentration at cloud boundaries".Atmospheric Research 234(2020).