气候变化领域集成服务门户(CCPortal): How Does the Melting Impact Charge Separation in Squall Line? A Bin Microphysics Simulation Study

CCPortal

DOI	10.1029/2020GL090840
	How Does the Melting Impact Charge Separation in Squall Line? A Bin Microphysics Simulation Study
	Xu L.; Xue L.; Geresdi I.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	A new electrification and discharge model was developed based on a two-moment bin microphysical scheme coupled with the Weather Research and Forecasting (WRF) model. Based on the electrical model, the role of the noninductive charging mechanism associated with the melting processes of both snow and graupel (rimed particles) in the charge structure formation in the stratiform region of an organized convective system was examined. Our results showed that the snow melting charging mechanism forms a substantial positive charge layer near and below 0°C isotherm in the stratiform region of a squall line. It was also found that the graupel melting charging process mostly enhanced the positive charge layer in the convective region with little impact in the stratiform region. The in situ charging of noninductive collisional and melting processes and the charge transportation from the convective core all contribute to the charge structure formation in the stratiform region of a squall line. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electric charge; Metal melting; Snow; Storms; Charge separations; Charge transportation; Convective systems; Discharge modeling; Electrical modeling; Non-inductive charging; Simulation studies; Weather research and forecasting models; Weather forecasting; atmospheric convection; cloud microphysics; melting; snowmelt; squall line; stratiform cloud; United Nations Framework Convention on Climate Change; weather forecasting
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/169500
作者单位	State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; National Center for Atmospheric Research, Boulder, CO, United States; Faculty of Sciences, University of Pécs, Pécs, Hungary
推荐引用方式 GB/T 7714	Xu L.,Xue L.,Geresdi I.. How Does the Melting Impact Charge Separation in Squall Line? A Bin Microphysics Simulation Study[J],2020,47(21).
APA	Xu L.,Xue L.,&Geresdi I..(2020).How Does the Melting Impact Charge Separation in Squall Line? A Bin Microphysics Simulation Study.Geophysical Research Letters,47(21).
MLA	Xu L.,et al."How Does the Melting Impact Charge Separation in Squall Line? A Bin Microphysics Simulation Study".Geophysical Research Letters 47.21(2020).