气候变化领域集成服务门户(CCPortal): Charge Separation in Collisions Between Ice Crystals and a Spherical Simulated Graupel of Centimeter Size

CCPortal

DOI	10.1029/2019JD030941
	Charge Separation in Collisions Between Ice Crystals and a Spherical Simulated Graupel of Centimeter Size
	Luque M.Y.; Nollas F.; Pereyra R.G.; Bürgesser R.E.; Ávila E.E.
发表日期	2020
ISSN	2169897X
卷号	125 期号:3
英文摘要	This work reports a new laboratory study of the electric charge separated in collisions between a spherical target of 1 cm in diameter growing by riming and vapor-grown ice crystals, with the objective of studying the charging behavior of the larger ice precipitation particles in thunderstorms in terms of the noninductive mechanism. A series of experiments was conducte d for a wide range of environmental conditions; the measurements were performed for effective liquid water content between 0.5 and 5 g m−3, for ambient temperatures between −5 and −30 °C and at air speed of 11 m s−1. The magnitude and sign of the electric charge transfer on the ice sphere as a function of the ambient temperature and the effective liquid water content is presented. The results show a charge reversal temperature for the riming target, which is roughly independent of liquid water concentration in the measured range. The simulated graupel charges negatively for temperatures below −15 °C, and positively at temperatures above −15 °C. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Charge transfer; graupel; lightning; thunderstorm
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/186198
作者单位	FaMAF, Universidad Nacional de Córdoba, IFEG-CONICET, Córdoba, Argentina
推荐引用方式 GB/T 7714	Luque M.Y.,Nollas F.,Pereyra R.G.,et al. Charge Separation in Collisions Between Ice Crystals and a Spherical Simulated Graupel of Centimeter Size[J],2020,125(3).
APA	Luque M.Y.,Nollas F.,Pereyra R.G.,Bürgesser R.E.,&Ávila E.E..(2020).Charge Separation in Collisions Between Ice Crystals and a Spherical Simulated Graupel of Centimeter Size.Journal of Geophysical Research: Atmospheres,125(3).
MLA	Luque M.Y.,et al."Charge Separation in Collisions Between Ice Crystals and a Spherical Simulated Graupel of Centimeter Size".Journal of Geophysical Research: Atmospheres 125.3(2020).