DOI: 10.1002/2014GL062600
论文题名: Linkages of remote sea surface temperatures and Atlantic tropical cyclone activity mediated by the African monsoon
作者: Taraphdar S. ; Ruby Leung L. ; Hagos S.
刊名: Geophysical Research Letters
ISSN: 0094-9054
EISSN: 1944-8785
出版年: 2015
卷: 42, 期: 2 起始页码: 572
结束页码: 578
语种: 英语
英文关键词: African easterly jet
; African easterly wave
; African monsoon
; Mediterranean SST
; sea surface temperature
; tropical cyclones
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Climate change
; Hurricanes
; Storms
; Submarine geophysics
; Surface properties
; Surface waters
; Tropics
; African easterly jet
; African easterly waves
; African monsoons
; Mediterranean SST
; Sea surface temperature (SST)
; Tropical cyclone
; Oceanography
; annual variation
; atmospheric front
; climate effect
; jet flow
; monsoon
; oceanic convection
; sea surface temperature
; tropical cyclone
; Atlantic Ocean
英文摘要: Warm sea surface temperatures (SSTs) in North Atlantic and Mediterranean (NAMED) can influence tropical cyclone (TC) activity in the tropical East Atlantic by modulating summer convection over western Africa. Analysis of 30years of observations demonstrates that warm NAMED SST is linked to a strengthening of the Saharan heat low and enhancement of moisture and moist static energy in the lower troposphere over West Africa, which favors a northward displacement of the monsoonal front. These processes also lead to a northward shift of the African easterly jet that introduces an anomalous positive vorticity from western Africa to the main development region (50°W-20°E; 10°N-20°N) of Atlantic TCs. By modulating multiple African monsoon processes, NAMED SST explains comparable and approximately one third of the interannual variability of Atlantic TC frequency as that explained by local wind shear and local SST, respectively, which are known key factors that influence Atlantic TC development. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923566053&doi=10.1002%2f2014GL062600&partnerID=40&md5=afed11571a09c2088a3d739efe060e44
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8670
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: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States
Recommended Citation:
Taraphdar S.,Ruby Leung L.,Hagos S.. Linkages of remote sea surface temperatures and Atlantic tropical cyclone activity mediated by the African monsoon[J]. Geophysical Research Letters,2015-01-01,42(2).