DOI: 10.1002/2016GL069980
论文题名: Understanding Pacific Ocean influence on interannual precipitation variability in the Sahel
作者: Pomposi C. ; Giannini A. ; Kushnir Y. ; Lee D.E.
刊名: Geophysical Research Letters
ISSN: 0094-8687
EISSN: 1944-8418
出版年: 2016
卷: 43, 期: 17 起始页码: 9234
结束页码: 9242
语种: 英语
英文关键词: El Nino
; moisture budget
; monsoon
; Sahel
Scopus关键词: Atmospheric temperature
; Climatology
; Moisture
; Oceanography
; Precipitation (meteorology)
; Surface waters
; Atmospheric circulation changes
; Eastern tropical pacific
; EL Nino
; Moisture budget
; Monsoon
; Precipitation variability
; Sahel
; Sea surface temperature anomalies
; Budget control
; annual variation
; atmospheric circulation
; dry season
; El Nino
; hydrometeorology
; moisture content
; moisture transfer
; monsoon
; precipitation assessment
; sea surface temperature
; subsidence
; troposphere
; Atlantic Ocean
; Atlantic Ocean (Tropical)
; Pacific Ocean
; Pacific Ocean (Tropical)
; Sahel [Sub-Saharan Africa]
英文摘要: Moisture budget decomposition is performed for the Sahel (10°–20°N and 20°W–40°E) in order to understand the processes that govern regional hydroclimate variability on interannual time scales and frame them in the context of their primary ocean driver. Results show that warm conditions in the Eastern Tropical Pacific remotely force anomalously dry conditions primarily through affecting the low-troposphere mass divergence field. This behavior is related to increased subsidence over the tropical Atlantic and into the Sahel and an anomalous westward flow of moisture from the continent, both resulting in a coherent drying pattern. Understanding the physical processes relating remote sea surface temperature anomalies to atmospheric circulation changes and the resulting complex local convergence patterns is important for advancing seasonal prediction of precipitation over West Africa. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988036842&doi=10.1002%2f2016GL069980&partnerID=40&md5=440c3bc74a03887fab29b3ca82963ee4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9650
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: Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States
Recommended Citation:
Pomposi C.,Giannini A.,Kushnir Y.,et al. Understanding Pacific Ocean influence on interannual precipitation variability in the Sahel[J]. Geophysical Research Letters,2016-01-01,43(17).