DOI: 10.1175/JCLI-D-16-0425.1
Scopus记录号: 2-s2.0-85015978692
论文题名: Characteristics and impacts of extratropical Rossby Wave breaking during the Atlantic hurricane season
作者: Zhang G. ; Wang Z. ; Peng M.S. ; Magnusdottir G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 7 起始页码: 2363
结束页码: 2379
语种: 英语
Scopus关键词: Hurricanes
; Liquid waves
; Moisture
; Ocean currents
; Oceanography
; Storms
; Tropics
; Troposphere
; Atlantic Ocean
; Climate variability
; Rossby wave
; Seasonal forecasting
; Tropical cyclone
; Wavebreaking
; Mechanical waves
; forecasting method
; hurricane
; Rossby wave
; seasonal variation
; tropical cyclone
; troposphere
; wave breaking
; Atlantic Ocean
英文摘要: This study investigates the characteristics of extratropical Rossby wave breaking (RWB) during the Atlantic hurricane season and its impacts on Atlantic tropical cyclone (TC) activity. It was found that RWB perturbs the wind and moisture fields throughout the troposphere in the vicinity of a breaking wave. When RWB occurs more frequently over the North Atlantic, the Atlantic main development region (MDR) is subject to stronger vertical wind shear and reduced tropospheric moisture; the basinwide TC counts are reduced, and TCs are generally less intense, have a shorter lifetime, and are less likely to make landfalls. A significant negative correlation was found between Atlantic TC activity and RWB occurrence during 1979-2013. The correlation is comparable to that with the MDR SST index and stronger than that with the Niño-3.4 index. Further analyses suggest that the variability of RWB occurrence in the western Atlantic is largely independent of that in the eastern Atlantic. The RWB occurrence in the western basin is more closely tied to the environmental variability of the tropical North Atlantic and is more likely to hinder TC intensification or reduce the TC lifetime because of its proximity to the central portion of TC tracks. Consequently, the basinwide TC counts and the accumulated cyclone energy have a strong correlation with western-basin RWB occurrence but only a moderate correlation with eastern-basin RWB occurrence. The results highlight the extratropical impacts on Atlantic TC activity and regional climate via RWB and provide new insights into the variability and predictability of TC activity. © 2017 American Meteorological Society. 资助项目: NOAA, National Oceanic and Atmospheric Administration
; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49860
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Naval Research Laboratory, Monterey, CA, United States; Department of Earth System Science, University of California, Irvine, Irvine, CA, United States
Recommended Citation:
Zhang G.,Wang Z.,Peng M.S.,et al. Characteristics and impacts of extratropical Rossby Wave breaking during the Atlantic hurricane season[J]. Journal of Climate,2017-01-01,30(7)