1. Matsumoto JEPP Japan EOS Promotion Program (JEPP) Theme 2-2 by Prof. Matsumoto, U-Tokyo Development of rainfall observation system in Southeast Asia （ 1 ） Research on rainfall distribution （ 2 ） Research on flood prediction Rainfall observation by automatic rain Rainfall estimation using radar and gauges and development of real-time satellite observation and its data transmission system application to flood prediction Objective: Develop rainfall observation system in order to understand water cycle and its variability by climatic changes in tropical Asian monsoon region over Indochina IP Automatic rain gauge Networks India, Bangladesh 36 Thailand 18 Vietnam 33 Rainfall estimation by satellite observation Flood prediction Radar data + Raingauge data → Composite rainfall data Similar to Radar-AMeDAS system in Japan

2. Routine Obs. Stations in Ver. 2 http://hydro.iis.u-tokyo.ac.jp/GAME-T/GAIN-T/index.html http://gain-hub.mri-jma.go.jp We have collected quite good data for Indochina

3. Automatic rain gauges in Indochina High Density Rain Gauges １ High Density Rain Gauges ２ 18 N

4. Shift of Echo Area Max Time by CAPPI data of Om Koi radar (Okumura et al., GRL) Diurnal Variation of Precipitation Simulated by Cloud Resolving Model (Satomura, 2000: JMSJ)

5. Topographic Setting of Danang area Just the South of Hai Van Pass ( 雲海峠 ), “climatic divide” of Viet Nam Source : Google Earth Ho Chi Minh Hanoi Bangkok Vientiane Phnom Penh Yangon Da Nang Winter Monsoon “Climatic Divide”

9. 豪雨の総観規模過程 Tropical depression （ TD ） convergence Orographic effect Upward motion Continuous heavy rain Cold surge （ CS ） 925hPaStre am line ＆ v 925hPa divergence

10. Diurnal and seasonal rainfall variations by automatic rain gauge at Hiep Duc, central Vietnam in 2004 Hiep Duc, 2004 : Month-Hour Diagram

11. Location

12. インド亜大陸北東部における降水量の観測

13. Rainfall in Meghalaya in 2006 Thankalan Park Pynur Mawsingram Cherrapunjee Amlaerem

15. Doi Inthanon (2,565m) Chiang Mai Mae Nam Thanlwin Mae Chaem Mae Yuam 979899100ºE 19ºN Mae Ping 18ºN Mae Chaem Watershed 3,853km 2 282-2,565 masl Nattaung (2,820m) Mae Pai Kog-Ma

16. Rainfall-elevation 2006 年 降水量 2006 年 7 月降水量 2006 年 9 月降水量

17. In AMY2008… Hourly rainfall Radar observations Some AWS station data in Bangladesh, Meghalaya, Central Vietnam Data will be open through CEOP data-base