气候变化领域集成服务门户(CCPortal): High Supersaturation in the Wake of Falling Hydrometeors: Implications for Cloud Invigoration and Ice Nucleation

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DOI	10.1029/2020GL088055
	High Supersaturation in the Wake of Falling Hydrometeors: Implications for Cloud Invigoration and Ice Nucleation
	Prabhakaran P.; Kinney G.; Cantrell W.; Shaw R.A.; Bodenschatz E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	Aerosol particles, cloud droplets, and ice crystals, coupled through the supersaturation field, play an important role in the buoyancy and life cycle of convective clouds. This letter reports laboratory observations of copious cloud droplets and ice crystals formed in the wake of a warm, falling water drop, which is a laboratory surrogate for a relatively warm hydrometeor in atmospheric clouds, such as a graupel particle in the wet growth regime. Aerosols were activated in the regions of very high supersaturation due to mixing in the wake. A mechanism is explored for attaining very high supersaturations capable of activating significant fractions of the interstitial aerosols within the lifetime of a convective cloud. The latent heat released from the activation of interstitial aerosols and subsequent growth may provide an additional source of buoyancy for cloud invigoration and may lead to larger concentrations of ice crystals. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Buoyancy; Chemical activation; Clouds; Crystals; Drops; Supersaturation; Wakes; Aerosol particles; Cloud droplets; Convective clouds; Growth regime; Ice crystals; Ice nucleation; Water drop; Ice; aerosol; buoyancy; crystal structure; equipment; latent heat flux; life cycle; nucleation; particle size; supersaturation; wake
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/170350
作者单位	Department of Physics, Michigan Technological University, Houghton, MI, United States; Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany; Institute for Dynamics of Complex Systems, University of Göttingen, Göttingen, Germany; Laboratory of Solid State Physics, Cornell University, Ithaca, NY, United States
推荐引用方式 GB/T 7714	Prabhakaran P.,Kinney G.,Cantrell W.,et al. High Supersaturation in the Wake of Falling Hydrometeors: Implications for Cloud Invigoration and Ice Nucleation[J],2020,47(10).
APA	Prabhakaran P.,Kinney G.,Cantrell W.,Shaw R.A.,&Bodenschatz E..(2020).High Supersaturation in the Wake of Falling Hydrometeors: Implications for Cloud Invigoration and Ice Nucleation.Geophysical Research Letters,47(10).
MLA	Prabhakaran P.,et al."High Supersaturation in the Wake of Falling Hydrometeors: Implications for Cloud Invigoration and Ice Nucleation".Geophysical Research Letters 47.10(2020).