matsumoto jepp japan eos promotion program (jepp) theme 2-2 by prof. matsumoto, u-tokyo development...
TRANSCRIPT
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 predictionRainfall 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 36Thailand 18Vietnam 33
Rainfall estimation by satellite observation
Flood predictionRadar data + Raingauge data → Composite rainfall data
Similar to Radar-AMeDAS system in Japan
Routine Obs. Stations in Ver. 2
http://hydro.iis.u-tokyo.ac.jp/GAME-T/GAIN-T/index.htmlhttp://gain-hub.mri-jma.go.jp
We have collected quite good data for Indochina
Automatic rain gauges in Indochina
High Density Rain Gauges １
High Density Rain Gauges ２
18 N
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)
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”
豪雨の総観規模過程
Tropical depression（ TD）
convergence
Orographic effect
Upward motion
Continuous heavy rain
Cold surge（ CS）
925hPaStream line＆ v
925hPa divergence
• Diurnal and seasonal rainfall variations by automatic rain gauge at Hiep Duc, central Vietnam in 2004
Hiep Duc, 2004 : Month-Hour Diagram
Location
インド亜大陸北東部における降水量の観測
Rainfall in Meghalaya in 2006
Thankalan ParkPynurMawsingramCherrapunjeeAmlaerem
Doi Inthanon Doi Inthanon (2,565m)(2,565m)
Chiang MaiChiang Mai
Mae Nam Mae Nam ThanlwinThanlwin
Mae Mae ChaemChaem
Mae Mae YuamYuam
97 98 99 100ºE
19ºN
Mae Ping Mae Ping
18ºN
Mae Chaem WatershedMae Chaem Watershed3,853km3,853km22 282-2,565 masl 282-2,565 masl
Nattaung Nattaung (2,820m)(2,820m)
Mae Pai Mae Pai
Kog-MaKog-Ma
0
100
200
300
400
500
600
700
800
0 1000 2000 3000
Elevation (m.a.s.l.)
Ann
ual R
ainf
all (
mm
)
0
500
1000
1500
2000
2500
3000
0 1000 2000 3000
Elevation (m.a.s.l.)
Ann
ual R
ainf
all (
mm
)
0
100
200
300
400
500
600
700
800
0 1000 2000 3000
Elevation (m.a.s.l.)
Ann
ual R
ainf
all (
mm
)
Rainfall-elevationRainfall-elevation2006年 降水量
2006年 7月降水量
2006年 9月降水量
0
1000
2000
3000
4000
0 1000 2000 3000
Elevation (m.a.s.l.)
An
nu
al R
ain
fall
(mm
)
1999 (11 sites)
2000 (14 sites)
2001 (13 sites)
2002 (11 sites)
2003( 9 sites)
2004 (11 sites)
2005 (12 sites)
In AMY2008…
• Hourly rainfall
• Radar observations
• Some AWS station data in Bangladesh, Meghalaya, Central Vietnam
Data will be open through CEOP data-base