DOI: 10.1002/2016GL071636
论文题名: Modulation of Bjerknes feedback on the decadal variations in ENSO predictability
作者: Zheng F. ; Fang X.-H. ; Zhu J. ; Yu J.-Y. ; Li X.-C.
刊名: Geophysical Research Letters
ISSN: 0094-8317
EISSN: 1944-8048
出版年: 2016
卷: 43, 期: 24 起始页码: 12560
结束页码: 12568
语种: 英语
英文关键词: Bjerknes feedback
; decadal variation
; ENSO
; predictability
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Sea level
; Sensitivity analysis
; Bjerknes feedback
; Decadal variations
; ENSO
; Equatorial Pacific
; Predictability
; Sea level pressure
; Southern oscillation
; Surface temperatures
; Climatology
英文摘要: Clear decadal variations exist in the predictability of the El Niño–Southern Oscillation (ENSO), with the most recent decade having the lowest ENSO predictability in the past six decades. The Bjerknes Feedback (BF) intensity, which dominates the development of ENSO, has been proposed to determine ENSO predictability. Here we demonstrate that decadal variations in BF intensity are largely a result of the sensitivity of the zonal winds to the zonal sea level pressure (SLP) gradient in the equatorial Pacific. Furthermore, the results show that during low-ENSO predictability decades, zonal wind anomalies over the equatorial Pacific are more linked to SLP variations in the off-equatorial Pacific, which can then transfer this information into surface temperature and precipitation fields through the BF, suggesting a weakening in the ocean-atmosphere coupling in the tropical Pacific. This result indicates that more attention should be paid to off-equatorial processes in the prediction of ENSO. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85008456998&doi=10.1002%2f2016GL071636&partnerID=40&md5=e59584e1a5de0fc34907ef2fbe4de0f1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9280
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: International Center for Climate and Environment Science (ICCES), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zheng F.,Fang X.-H.,Zhu J.,et al. Modulation of Bjerknes feedback on the decadal variations in ENSO predictability[J]. Geophysical Research Letters,2016-01-01,43(24).