Abstract: A low-order tropical atmospheric model is developed that gives a reasonable account of the tropical precipitation and circulation anomalies observed during various El Niño and La Niña events. The dynamical part of the model ...

Abstract: A global ocean general circulation model is forced using various upper boundary conditions (BCs) on temperature and salinity. Solutions are obtained under restoring and mixed BCs (i.e., a restoring condition on the upper-level ...

Abstract: The dominant variability modes in the Tropics are investigated and contrasted with the anomalous situation observed during the last few years. The prime quantity analyzed is anomalous sea surface temperature (SST) in the ...

Abstract: The possibility that the tropical Pacific coupled system linearly amplifies perturbations produced by the Madden?Julian oscillation (MJO) is explored. This requires an estimate of the low-frequency tail of the MJO. Using ...

Abstract: An atmospheric general circulation model (AGCM), a simplified atmospheric model (SAM) of surface heat flux, and various idealized analytic models have been used to investigate the atmospheric response over the North Atlantic ...

Abstract: In this work the role that observed intraseasonal atmospheric variability may play in controlling and maintaining ENSO variability is examined. To this end, an asymptotically stable intermediate coupled model of El ...

Abstract: A common practice in the design of forecast models for ENSO is to couple ocean general circulation models to simple atmospheric models. Therefore, by construction these models (known as hybrid ENSO models) do not resolve ...