DOI: 10.1007/s00382-014-2422-z
Scopus记录号: 2-s2.0-84925515604
论文题名: Global eastward propagation signals associated with the 4–5-year ENSO cycle
作者: Simon Wang S.-Y. ; Jiang X. ; Fosu B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 44, 期: 2017-09-10 起始页码: 2825
结束页码: 2837
语种: 英语
英文关键词: ENSO cycle
; Precursor
; Prediction
; SST propagation
; WNP
英文摘要: Longitude-time evolution of sea surface temperature anomalies (SSTA) reveals a slow southeastward propagation from the western North Pacific (WNP) around 20°N to the Niño-3.4 region in the equatorial Central Pacific. The propagation is manifested as a narrow, southwest-northeast oriented SSTA band across the subtropical North Pacific, and its journey takes about 2–3 years. The propagating SSTA appears to engage the initiation of the El Niño–Southern Oscillation (ENSO). The anomalies of surface winds, sea level pressure, outgoing longwave radiation, and velocity potential all exhibit a concurrent and distinct eastward propagation, one that appears to be circumglobal and is coupled with the predominant 4–5 year frequency of the ENSO cycle. It is suggested that the previously found warming/cooling in the Indian Ocean induced by El Niño/La Niña, the progressive SSTA and wind anomalies across the Indian Ocean towards the WNP, and the predominant 4–5-year frequency of the North Pacific Oscillation collectively contribute to the reported SSTA propagation. The findings implicate that monitoring the SSTA propagation from the WNP towards the tropical central Pacific could be useful in tracking the ENSO development. © 2014, Springer-Verlag Berlin Heidelberg. 资助项目: USAID, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54222
Appears in Collections: 过去全球变化的重建
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作者单位: Utah Climate Center, Utah State University, Logan, UT, United States; Climate Sciences Program, Utah State University, Logan, UT, United States; Joint Institute for Regional Earth System Science and Engineering, UCLA, Los Angeles, CA, United States
Recommended Citation:
Simon Wang S.-Y.,Jiang X.,Fosu B.. Global eastward propagation signals associated with the 4–5-year ENSO cycle[J]. Climate Dynamics,2015-01-01,44(2017-09-10)