DOI: 10.1002/2016GL069542
论文题名: The strong freshwater anomaly during the onset of the 2015/2016 El Niño
作者: Gasparin F. ; Roemmich D.
刊名: Geophysical Research Letters
ISSN: 0094-9569
EISSN: 1944-9300
出版年: 2016
卷: 43, 期: 12 起始页码: 6452
结束页码: 6460
语种: 英语
英文关键词: El Niño
; equatorial dynamics
; salinity
; western Pacific warm pool
Scopus关键词: Budget control
; Nickel
; Wind effects
; Eastern pacific
; Equatorial Pacific
; Large amplitude
; Observational data
; Salinity
; Surface acceleration
; Western Pacific
; Western Pacific Warm Pool
; Water
英文摘要: The strong freshwater anomaly in the equatorial Pacific is investigated during the onset of the 2015/2016 El Niño using oceanic observational data sets and atmospheric reanalyzes. The 2015 salinity patterns are marked by a large equatorial freshwater anomaly whose extensive spatial and large amplitude characteristics have not previously been captured in the 2004–2014 Argo record. As the main contributors of the freshwater budget, zonal advection and surface forcing have similar amplitude but with maxima located at different longitudes around the dateline. The comparison of the substantial rainfall and westerly winds observed in 2015 with the 2009 and 1997 El Niño onset years shows that 2015 characteristics combine both typical salinity-related patterns of Central and Eastern Pacific El Niños. Dynamically, this large freshwater anomaly causes a positive steric height anomaly in the western Pacific and increases eastward surface acceleration at the SSS front due to the zonal pressure gradient. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977488698&doi=10.1002%2f2016GL069542&partnerID=40&md5=3de610eea4c29ec3e060e5a9295a6eaa
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10532
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: Scripps Institution of Oceanography, University of California, San Diego, United States
Recommended Citation:
Gasparin F.,Roemmich D.. The strong freshwater anomaly during the onset of the 2015/2016 El Niño[J]. Geophysical Research Letters,2016-01-01,43(12).