DOI: 10.1175/JCLI-D-16-0385.1
Scopus记录号: 2-s2.0-85012289064
论文题名: Observed El Niño SSTA development and the effects of easterly and westerly wind events in 2014/15
作者: Chiodi A.M. ; Harrison D.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 4 起始页码: 1505
结束页码: 1519
语种: 英语
Scopus关键词: Atmospheric temperature
; Forecasting
; Oceanography
; Surface properties
; Surface waters
; Waveguides
; Wind stress
; EL Nino
; ENSO
; Equatorial Pacific
; Ocean model
; Oceanic waveguide
; Surface stress
; Westerly winds
; Wind surges
; Nickel
; El Nino
; El Nino-Southern Oscillation
; modeling
; sea surface temperature
; stress field
; temperature anomaly
; wind field
; wind forcing
; wind stress
英文摘要: The unexpected halt of warm sea surface temperature anomaly (SSTA) growth in 2014 and development of a major El Niño in 2015 has drawn attention to our ability to understand and predict El Niño development. Wind stress-forced ocean model studies have satisfactorily reproduced observed equatorial Pacific SSTAs during periods when data return from the TAO/TRITON buoy network was high. Unfortunately, TAO/TRITON data return in 2014 was poor. To study 2014 SSTA development, the observed wind gaps must be filled. The hypothesis that subseasonal wind events provided the dominant driver of observed waveguide SSTA development in 2014 and 2015 is used along with the available buoy winds to construct an oceanic waveguide-wide surface stress field of westerly wind events (WWEs) and easterly wind surges (EWSs). It is found that the observed Niño-3.4 SSTA development in 2014 and 2015 can thereby be reproduced satisfactorily. Previous 2014 studies used other wind fields and reached differing conclusions about the importance of WWEs and EWSs. Experiment results herein help explain these inconsistencies, and clarify the relative importance of WWEs and EWSs. It is found that the springtime surplus of WWEs and summertime balance between WWEs and EWSs (yielding small net wind stress anomaly) accounts for the early development and midyear reversal of El Niño-like SSTA development in 2014. A strong abundance of WWEs in 2015 accounts for the rapid SSTA warming observed then. Accurately forecasting equatorial Pacific SSTA in years like 2014 and 2015 may require learning to predict WWE and EWS occurrence characteristics. © 2017 American Meteorological Society. 资助项目: 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/49880
Appears in Collections: 气候变化事实与影响
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作者单位: Joint Institute for the Study of the Ocean and Atmosphere, University of Washington, Seattle, WA, United States; NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States
Recommended Citation:
Chiodi A.M.,Harrison D.E.. Observed El Niño SSTA development and the effects of easterly and westerly wind events in 2014/15[J]. Journal of Climate,2017-01-01,30(4)