In this study we investigate the physical processes underlying maintenance of an in-phase transition between the South Asian summer monsoon (SASM) and the succeeding North Australian summer monsoon (NASM). In particular, our attentions were focused on identification of the roles of sea surface temperature anomaly (SSTA) in the Indian Ocean in contrast to that of the El Niño-Southern Oscillation...

The hydroclimatic association between the monthly Indian summer monsoon rainfall and a proposed monthly composite index (MCI) of large-scale atmospheric circulations from the Pacific Ocean and Indian Ocean regions is established. The spatial variability of this association is also checked. The predictability of the monthly Indian summer monsoon rainfall using the MCI is also investigated and is...

[1] In the Indian Ocean, in situ data are sparse both in time and space. Therefore, numerical models are one of the major tools for further understanding of the ocean circulation. We have implemented, validated, and done a 40 year simulation experiment forced by synoptic atmospheric data by using the Miami Isopycnic Coordinate Ocean Model (MICOM) not previously used for the Indian Ocean. The si...

The relative contributions of the Indian Ocean and Pacific Ocean sea surface temperatures (SSTs) to the rainfall variability over eastern, central, and southern Africa during austral spring-summer are examined. The variability of African rainfall is statistically related to both oceans, but the variability in the two oceans is also related. To separate the effects of the Indian and Pacific Ocea...

The net heat flux into the northern Indian Ocean is between 75 and 100 W m22 during the boreal spring and early summer but only 10–20 W m22 in the western Pacific during the entire year. The differences in the net surface heat fluxes arise from the radiation shielding by deep convective clouds over the western Pacific and the near absence of clouds over the northern Indian Ocean during spring. ...

[1] Salinity profiles collected by the International Argo Project (International Argo Project data are available at http://argo.jcommops.org) since 2000 provide us an unprecedented opportunity to study impacts of salinity data on the quality of ocean analysis, which has been hampered by a lack of salinity observations historically. The operational Global Ocean Data Assimilation System (GODAS) d...

The main objective of this paper is to highlight maritime security challenges within the South Western Indian Ocean Region; especially by India and South Africa and to explore the maritime initiatives and developments embarked upon by the two countries respectively. The East coast of South Africa and the West coast of India share the same oceanic territory, i.e. the Indian Ocean. This research ...

[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...

Interannual rainfall extremes over southwest Western Australia (SWWA) are examined using observations, reanalysis data, and a long-term natural integration of the global coupled climate system. The authors reveal a characteristic dipole pattern of Indian Ocean sea surface temperature (SST) anomalies during extreme rainfall years, remarkably consistent between the reanalysis fields and the coupl...