Long-term changes of precipitation intensity in monsoon Asia

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Paper or image format daily precipitation data and typhoon tracks in monsoon Asian countries including Japan back into the beginning of the 20th century have been digitized, and long-term changes of precipitation intensity on a daily basis have been analyzed. The precipitation intensity since 1930 has strengthened widely over Japan, in particular, with statistical significance in Northeast Japan. Precipitation intensity since 1950 in the Philippines has increased in summer, whereas drying trend is detected in the west coast region in winter. These trends are different when compared with those prior to 1940. Also precipitation intensity has been affected by both ENSO event and global warming. Difference of precipitation intensity trend between pre- and post-1950 has also recognized in Central Vietnam.