气候变化领域集成服务门户(CCPortal): Hurricane stalling along the North American coast and implications for rainfall

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DOI	10.1038/s41612-019-0074-8
	Hurricane stalling along the North American coast and implications for rainfall
	Hall T.M.; Kossin J.P.
发表日期	2019
ISSN	23973722
卷号	2 期号:1
英文摘要	The average speed of tropical cyclone (TC) translation has slowed since the mid 20th century. Here we report that North Atlantic (NA) TCs have become increasingly likely to “stall” near the coast, spending many hours in confined regions. The stalling is driven not only by slower translation, but also by an increase in abrupt changes of direction. We compute residence-time distributions for TCs in confined coastal regions, and find that the tails of these distributions have increased significantly. We also show that TCs stalling over a region result in more rain on the region. Together, increased stalling and increased rain during stalls imply increased coastal rainfall from TCs, other factors equal. Although the data are sparse, we do in fact find a significant positive trend in coastal annual-mean rainfall 1948–2017 from TCs that stall, and we verify that this is due to increased stalling frequency. We make no attribution to anthropogenic climate forcing for the stalling or rainfall; the trends could be due to low frequency natural variability. Regardless of the cause, the significant increases in TC stalling frequency and high potential for associated increases in rainfall have very likely exacerbated TC hazards for coastal populations. © 2019, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
语种	英语
scopus关键词	coastal zone; hurricane event; rainfall; residence time; temporal distribution; tropical cyclone; Atlantic Ocean; Atlantic Ocean (North); North America
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178114
作者单位	NASA Goddard Institute for Space Studies, New York, NY, United States; NOAA National Centers for Environmental Information, Center for Weather and Climate, Madison, WI, United States
推荐引用方式 GB/T 7714	Hall T.M.,Kossin J.P.. Hurricane stalling along the North American coast and implications for rainfall[J],2019,2(1).
APA	Hall T.M.,&Kossin J.P..(2019).Hurricane stalling along the North American coast and implications for rainfall.npj Climate and Atmospheric Science,2(1).
MLA	Hall T.M.,et al."Hurricane stalling along the North American coast and implications for rainfall".npj Climate and Atmospheric Science 2.1(2019).