The Indian Ocean, the western Pacific Ocean and "Maritime Continent" between these two oceans, have unique geography with the various tropical islands over a significantly warm ocean. Various precipitating clouds over the region drive the global atmospheric circulation as the "heat engine". Thus, the modulation of the precipitating cloud systems over the region affects the global climate so much.
In this project, we are trying to understand mechanisms and roles of these precipitating cloud systems, by observational research. For the purpose, the integrated observations from the land sites, vessels and aircraft for the precipitating clouds and surrounding atmosphere and ocean are carried out. Analyses of these unique dataset must bring new prospects on the mechanism of the climate system and the hydrological cycle. The products of this project will be also utilized to improve the ability of the numerical simulation to know the future of our earth system.