DOI: 10.1002/2015GL066253
论文题名: European high-impact weather caused by the downstream response to the extratropical transition of North Atlantic Hurricane Katia (2011)
作者: Grams C.M. ; Blumer S.R.
刊名: Geophysical Research Letters
ISSN: 0094-9131
EISSN: 1944-8862
出版年: 2015
卷: 42, 期: 20 起始页码: 8738
结束页码: 8748
语种: 英语
英文关键词: convection
; extratropical transition
; numerical weather prediction
; potential vorticity
; Rossby wave
; tropical cyclone
Scopus关键词: Heat convection
; Mechanical waves
; Natural convection
; Storms
; Tropics
; Weather forecasting
; Extratropical transition
; Numerical weather prediction
; Potential vorticity
; Rossby wave
; Tropical cyclone
; Hurricanes
; convection
; extratropical environment
; hurricane event
; potential vorticity
; Rossby wave
; sensitivity analysis
; spatiotemporal analysis
; thunderstorm
; transition zone
; tropical cyclone
; weather forecasting
; Atlantic Ocean
; Atlantic Ocean (North)
; Central Europe
英文摘要: Tropical cyclones undergoing extratropical transition (ET) are thought to cause high-impact weather (HIW) close to the transitioning tropical cyclone and in remote regions. However, no study so far clearly attributed European HIW to the downstream impact of North Atlantic ET. When Hurricane Katia underwent ET in September 2011, severe thunderstorms occurred downstream in Central Europe. We quantify the role of Katia in the European HIW, using numerical sensitivity experiments. Results show that Katia was crucial for the evolution of a narrow downstream trough. Large-scale forcing for ascent ahead of this trough triggered deep convection. In the absence of ET, no trough was present over Europe and no HIW occurred. This study is the first unambiguous documentation that European HIW is caused by the downstream impact of North Atlantic ET and would not occur otherwise. It likewise corroborates the crucial role of ET in altering the large-scale midlatitude flow in downstream regions. Key Points High-impact weather in downstream regions is caused by the remote impact of a tropical cyclone Hurricane Katia amplified a downstream trough that triggered deep convection over Europe Moreover, ET can alter intensity, region, and timing of high-impact weather in downstream regions © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946615771&doi=10.1002%2f2015GL066253&partnerID=40&md5=a02c9056897c34b324f593a9df17f1a4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8747
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
Recommended Citation:
Grams C.M.,Blumer S.R.. European high-impact weather caused by the downstream response to the extratropical transition of North Atlantic Hurricane Katia (2011)[J]. Geophysical Research Letters,2015-01-01,42(20).