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Variation of Indian Summer Monsoon Rainfall on Quasi-biennial Variability of ISMR

PI: Vidyunmala Veldore
Institution: Indian Institute of Science
We propose the analyse Quasi-biennial variability of ISMR and its linkages to soil moisture and the variability in the Indian and Pacific Oceans. We propose to investigate whether there will be a change in the character of these events i.e. whether these linkages will strengthen or weaken in AR4 scenarios and the possible cause of these changes. Specifically we would like to study the impact of increasing heat content in the Pacific and Indian Oceans on the Indian Summer Monsoon and its effect on soil moisture and the consequent feebbacks. We also plan to analyse changes on the sub-seasonal scales under various scenarios. Methods of analysis such as the Continous Wavelet Techniques in Space and Time (CWT-ST) and the Intrinsic Mode Function techniques (IMF) would be used in this study. The study for Quasi-biennial variability will be done by initially studying the occurrence of these events with the control simulations, followed by studies under various scenarios up to 2200.

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    Lawrence Livermore National Laboratory  |  Physical & Life Sciences Directorate