NDLI: The westerly anomalies over the tropical pacific and their dynamical effect on the enso cycles during 1980

Content Provider	Springer Nature Link
Author	Ronghui, Huang Xiaoyun, Zang Renke, Zhang Jilong, Chen
Copyright Year	1998
Abstract	In this paper, the zonal wind anomalies in the lower troposphere over the tropical Pacific during 1980–1994 are analyzed by using the observed data. The results show that during the formation of the 1982/83, 1986/87 and 1991 / 92 ENSO events, there were the larger westerly anomalies in the lower troposphere over the equatorial Pacific. Moreover, it is explained by using the correlation analyses that the westerly anomalies over the equatorial Pacific could cause the warm episodes of the equatorial central and eastern Pacific. A simple air-sea coupled model is used to discuss theoretically the dynamical effect of the observed westerly anomalies of wind stress near the sea surface of the equatorial Pacific on the ENSO cycle occurred in the period of 1981–1983. It is shown by using the theoretical calculations of the equatorial oceanic Kelvin wave and Rossby waves responding to the forcing of the observed anomalies of zonal wind stress near the sea surface of the equatorial Pacific that the westerly anomalies of wind stress near the sea surface of the equatorial Pacific make significant dynamical effect on the ENSO cycles occurred in the period of 1982–1983.
Starting Page	135
Ending Page	151
Page Count	17
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	15
Issue Number	2
e-ISSN	18619533
Language	English
Publisher	Science Press
Publisher Date	1998-01-01
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Westerly anomalies ENSO cycle Kelvin wave Rossby wave Meteorology/Climatology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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