DOI: 10.1175/JCLI-D-17-0420.1
Scopus记录号: 2-s2.0-85041963457
论文题名: The imprint of strong-storm tracks on winter weather in North America
作者: Lukens K.E. ; Berbery E.H. ; Hodges K.I.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 5 起始页码: 2057
结束页码: 2074
语种: 英语
英文关键词: Extratropical cyclones
; Precipitation
; Storm tracks
; Wind
Scopus关键词: Losses
; Precipitation (chemical)
; Wind
; Current diagnostics
; Eastern north pacific
; Extratropical cyclones
; Lagrangian frameworks
; North Atlantic Ocean
; Northern Hemispheres
; Storm precipitation
; Storm track
; Storms
英文摘要: Northern Hemisphere winter storm tracks and their relation to winter weather are investigated using NCEP CFSR data. Storm tracks are described by isentropic PV maxima within a Lagrangian framework; these correspond well with those described in previous studies. The current diagnostics focus on strong-storm tracks, which comprise storms that achieve a maximum PV exceeding the mean value by one standard deviation. Large increases in diabatic heating related to deep convection occur where the storm tracks are most intense. The cyclogenesis pattern shows that strong storms generally develop on the upstream sectors of the tracks. Intensification happens toward the eastern North Pacific and all across the North Atlantic Ocean, where enhanced storm-track-related weather is found. In this study, the relation of storm tracks to nearsurface winds and precipitation is evaluated. The largest increases in storm-track-related winds are found where strong storms tend to develop and intensify, while storm precipitation is enhanced in areas where the storm tracks have their highest intensity. Strong storms represent about 16% of all storms but contribute 30%-50% of the storm precipitation in the storm-track regions. Both strong-storm-related winds and precipitation are prone to cause storm-related losses in the eastern U.S. and North American coasts. Over the oceans, maritime operations are expected to be most vulnerable to damage offshore of the U.S. coasts. Despite making up a small fraction of all storms, the strong-storm tracks have a significant imprint on winter weather in North America potentially leading to structural and economic loss. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111623
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Science, University of Maryland, College Park, College Park, MD, United States; Cooperative Institute for Climate and Satellites-Maryland, Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, MD, United States; Department of Meteorology, University of Reading, Reading, United Kingdom
Recommended Citation:
Lukens K.E.,Berbery E.H.,Hodges K.I.. The imprint of strong-storm tracks on winter weather in North America[J]. Journal of Climate,2018-01-01,31(5)