ENSO variability and atmospheric response in a global coupled atmosphere-ocean GCM

Contrasting Indian Ocean SST variability with and without ENSO influence: A coupled atmosphere-ocean GCM study

In this study, we perform experiments with a coupled atmosphere-ocean general circulation model (CGCM) to examine ENSO’s influence on the interannual sea-surface temperature (SST) variability of the tropical Indian Ocean. The control experiment includes both the Indian and Pacific Oceans in the ocean model component of the CGCM (the Indo-Pacific Run). The anomaly experiment excludes ENSO’s infl...

Role of the ENSO–Indian Ocean coupling on ENSO variability in a coupled GCM

[1] The effect of the Indian Ocean on El Niño/La Niña life cycles has been studied using 200-yrs simulation data of a coupled GCM. The results show that the interactive feedback between the ENSO and the Indian Ocean holds the key to the rapid transition to an opposite phase. This remote impact of the IndianOceanSSTanomaly is linked to the change of zonal wind stress in the western Pacific, whic...

ENSO Bred Vectors in Coupled Ocean–Atmosphere General Circulation Models

The breeding method has been implemented in the NASA Seasonal-to-Interannual Prediction Project (NSIPP) coupled general circulation model (CGCM) with the ultimate goal of improving operational seasonal to interannual climate predictions through ensemble forecasting and data assimilation. This is the first attempt to isolate the evolving ENSO instability and its corresponding global atmospheric ...

Coupled Aspect of Atlantic Ocean-Atmosphere Variability

This report is based on an overview talk given at the CLIVAR workshop on “Shallow tropical/subtropical overturning cells and their interactions with the atmosphere” that took place in Venice, Italy, October 9-13, 2000. After briefly touching upon observational studies, this report reviews the recent progress in coupled modeling of tropical Atlantic variability (TAV). This is followed by a discu...

Impact of southeast Indian Ocean sea surface temperature anomalies on monsoon-ENSO-dipole variability in a coupled ocean-atmosphere model