气候变化领域集成服务门户(CCPortal): The Role of Ice Splintering on Microphysics of Deep Convective Clouds Forming Under Different Aerosol Conditions: Simulations Using the Model With Spectral Bin Microphysics

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DOI	10.1029/2019JD031312
	The Role of Ice Splintering on Microphysics of Deep Convective Clouds Forming Under Different Aerosol Conditions: Simulations Using the Model With Spectral Bin Microphysics
	Qu Y.; Khain A.; Phillips V.; Ilotoviz E.; Shpund J.; Patade S.; Chen B.
发表日期	2020
ISSN	2169897X
卷号	125 期号:3
英文摘要	Observations during the Ice in Clouds Experiment-Tropical (ICE-T) field experiment show that the ice particles concentration in a developing deep convective clouds at the level of T = −15 °C reached about 500 L−1, that is, many orders higher than that of ice-nucleating particle. To simulate microphysics of these clouds, the 2-D Hebrew University Cloud model (HUCM) with spectral bin microphysics was used in which two main types of ice multiplication mechanisms were included in addition to the Hallet-Mossop mechanism. In the first ice multiplication mechanism ice splinters form by drop freezing and drop-ice collisions. Ice multiplication of this type dominates during developing stage of cloud evolution, when liquid water content is significant. At later stage when clouds become nearly glaciated, ice crystals are produced largely by ice splintering during ice-ice collisions (the second ice multiplication mechanism). Simulations show that droplet size distributions, as well as size distributions of ice particles, agree well with the measurements during ICE-T. Simulations with different cloud condensation nuclei concentrations show the existence of the “optimum” cloud condensation nuclei concentration (or droplet concentration), at which concentration of ice splinters reaches maximum. In these simulations ice nucleation caused by the direct formation of ice crystals upon ice-nucleating particles, as well as the Hallett-Mossop process, has a negligible contribution to the ice crystal concentration. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	mixed-phase clouds ice multiplication aerosol effects
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186197
作者单位	Key Laboratory of Mesoscale Severe Weather/MOE and School of Atmospheric Sciences, Nanjing University, Nanjing, China; University of Lund, Lund, Sweden; The Institute of the Earth Sciences, Hebrew University of Jerusalem, Jerusalem, Israel; Weizmann Institute, Rehovot, Israel
推荐引用方式 GB/T 7714	Qu Y.,Khain A.,Phillips V.,et al. The Role of Ice Splintering on Microphysics of Deep Convective Clouds Forming Under Different Aerosol Conditions: Simulations Using the Model With Spectral Bin Microphysics[J],2020,125(3).
APA	Qu Y..,Khain A..,Phillips V..,Ilotoviz E..,Shpund J..,...&Chen B..(2020).The Role of Ice Splintering on Microphysics of Deep Convective Clouds Forming Under Different Aerosol Conditions: Simulations Using the Model With Spectral Bin Microphysics.Journal of Geophysical Research: Atmospheres,125(3).
MLA	Qu Y.,et al."The Role of Ice Splintering on Microphysics of Deep Convective Clouds Forming Under Different Aerosol Conditions: Simulations Using the Model With Spectral Bin Microphysics".Journal of Geophysical Research: Atmospheres 125.3(2020).