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Simulation and hindcasts of tropical Pacific Ocean interannual variability Cover

Simulation and hindcasts of tropical Pacific Ocean interannual variability

Open Access
|Jan 1994

Abstract

A general circulation model of the tropical Pacific Ocean with a high resolution equatorial region is forced with observed winds from 1961 to 1993 to obtain a simulation of oceanic variability. Observed interannual sea surface temperature anomalies are reproduced well in the central equatorial Pacific, which is a region of strong variations in air—sea interaction. Combined principal oscillation pattern analysis of SST, heat content and zonal wind stress anomalies leads to a dominant interannual mode with a period of about 3 years. An empirical atmosphere model is constructed using the observed wind stress and the dominant simulated SST anomaly patterns. With the OGCM coupled to this statistical atmosphere, several hindcasts are made for the main recent ENSO events. Cold events are reproduced reasonably well, warm events less well: in particular, the 1982/83 hindcasts failed to produce a warming.

Language: English
Page range: 433 - 447
Submitted on: Aug 9, 1993
Accepted on: Feb 24, 1994
Published on: Jan 1, 1994
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 1994 Michael K. Davey, Sarah Ineson, Magdalena A. Balmaseda, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.