气候变化领域集成服务门户(CCPortal): Upright Convection in Extratropical Cyclones: A Survey Using Ground-Based Radar Data Over the United States

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DOI	10.1029/2019GL086620
	Upright Convection in Extratropical Cyclones: A Survey Using Ground-Based Radar Data Over the United States
	Jeyaratnam J.; Booth J.F.; Naud C.M.; Luo Z.J.; Homeyer C.R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Upright convection can impact extratropical cyclone (ETC) precipitation and dynamics differently than isentropic ascent, but how often it occurs and how much it contributes to total precipitation within an ETC have not been systematically documented in previous literature. Herein, convection in ETCs is analyzed using ground-based radar observations over the Eastern United States. Convection occupies 1%–5% of the precipitating region and constitutes 1%–15% of total cyclone precipitation. Furthermore, the location of convective activity occurs preferentially in the warm sector early in a cyclone's life cycle, and then as the storm evolves, more convection occurs along and behind the cold front. The precipitation rates in regions with convection are more likely to be stronger than those in other precipitating regions of the cyclone. However, the cyclones with the largest area-average precipitation rates include only a small contribution from convection. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Heat convection; Precipitation (chemical); Radar; Cold front; Convective activity; Extratropical cyclones; Ground based radar; Isentropic; Precipitation rates; Total precipitation; Storms; atmospheric convection; data set; extratropical cyclone; ground-based measurement; precipitation (climatology); radar; survey method; United States
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/170686
作者单位	Earth and Environmental Sciences Department, Graduate Center, The City University of New York, New York, NY, United States; Department of Earth and Atmospheric Sciences, The City College of New York, The City University of New York, New York, NY, United States; NASA Goddard Institute of Space Studies, New York, NY, United States; Applied Physics and Applied Mathematics Department, Columbia University of New York, New York, NY, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States
推荐引用方式 GB/T 7714	Jeyaratnam J.,Booth J.F.,Naud C.M.,et al. Upright Convection in Extratropical Cyclones: A Survey Using Ground-Based Radar Data Over the United States[J],2020,47(4).
APA	Jeyaratnam J.,Booth J.F.,Naud C.M.,Luo Z.J.,&Homeyer C.R..(2020).Upright Convection in Extratropical Cyclones: A Survey Using Ground-Based Radar Data Over the United States.Geophysical Research Letters,47(4).
MLA	Jeyaratnam J.,et al."Upright Convection in Extratropical Cyclones: A Survey Using Ground-Based Radar Data Over the United States".Geophysical Research Letters 47.4(2020).