Journal article

Variability of the Indian Ocean Dipole in coupled model paleoclimate simulations

J Brown, AH Lynch, AG Marshall

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | AMER GEOPHYSICAL UNION | Published : 2009

Abstract

The Indian Ocean Dipole (IOD) mode of variability has been observed to influence atmospheric circulation and precipitation over the Indian Ocean basin and surrounding continental areas, interacting with the Asian monsoon and El Niño Southern Oscillation (ENSO). Paleo-IOD reconstructions from fossil corals from the eastern tropical Indian Ocean suggest that IOD events may have varied in strength and timing under past climate conditions. The variability of the IOD and interactions with the Asian monsoon and ENSO are investigated here using a series of coupled model simulations of time slices during the last 55,000 years. The Fast Ocean Atmosphere Model (FOAM) is used to simulate pre-industrial..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

Petteri Uotilla provided assistance with model setup and analysis. Neville Nicholls provided helpful comments on a version of this manuscript. The comments of three anonymous reviewers also greatly improved this manuscript. The Australian Partnership for Advanced Computing (APAC) national facility was used to carry out model simulations. This research was supported by the Australian Research Council grants DP0557416 and FF0348550.