Journal
NEURAL NETWORKS
Volume 19, Issue 2, Pages 145-154Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neunet.2006.01.004
Keywords
neural network; El Nino; ENSO; nonlinear; forecast; sea surface temperature; tropical Pacific
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A nonlinear forecast system for the sea Surface temperature (SST) anomalies over the whole tropical Pacific has been developed using a multilayer perceptron neural network approach, where sea level pressure and SST anomalies were used as predictors to predict the five leading SST principal components at lead times from 3 to 15 months. Relative to the linear regression (LR) models, the nonlinear (NL) models showed higher correlation skills and lower root mean square errors over most areas of the domain, especially over the far western Pacific (west of 155 degrees E) and the eastern equatorial Pacific off Peru at lead times loner than 3 months, with correlation skills enhanced by 0.10-0.14. Seasonal and decadal changes in the prediction skills in the NL and LR models were also studied. (c) 2006 Elsevier Ltd. All rights reserved.
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