IInternational nternational FFlood lood NetNetworkwork

- IFNet -- IFNet -

Akira SasakiAkira Sasaki

Deputy Director GeneralDeputy Director General

““Water in Rivers” / IFNet SecretariatWater in Rivers” / IFNet Secretariat

- Overview of Flood Damage -- Overview of Flood Damage -

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1973 to1977

1978 to1982

1983 to1987

1988 to1992

1993 to1997

EARTHQUAKE

DROUGHTand FAMINE

FLOOD

HIGH WIND

LANDSLIDE

VOLCAND

OTHER

Fig.-1 Affected by type of disaster and by period (1973 ～ 1997)

Source ： CRED, “World Disasters Report 1999” Source ： Asian Disaster Reduction Center, “Data book of Asian Natural Disasters in the 20th Century”

Fig.-2 Average occurrence and damage of natural disasters (1975 ～ 1999)

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1975-1979 1980-1984 1985-1989 1990-1994 1995-1999The average occurrence

The average killed thousands year（ ／ ）

The average affected peaple million year（ ／ ）

The average damaged property billion dollar year（ ／ ）

75-79 80-84 85-89 90-94 95-99

Occurrence Fatalities (thousand/year)

Sufferers (million/year) Economic Losses (billion $/year)

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50

0

Assisting activities to break the vicious Assisting activities to break the vicious circle of poverty and environmental circle of poverty and environmental degradation caused by floods and lead degradation caused by floods and lead to a safe and secure lifeto a safe and secure life..

< CONCEPT >< CONCEPT >

International Flood Network ImageInternational Flood Network Image

Project Planning

MLIT(Ministry of

Land, Infrastructure &

Transport)

MLIT(Ministry of

Land, Infrastructure &

Transport)

WMO(World

Meteorological Organization)

WMO(World

Meteorological Organization)

WWC(World Water

Council)

WWC(World Water

Council)

JICA (Japan

International Cooperation

Agency)

JICA (Japan

International Cooperation

Agency)

ADB(Asian

Development Bank)

ADB(Asian

Development Bank) OthersOthersOthersOthers

International Flood Network (IFNet)

Accumulation and Submission of Information

Input to International Conferences

<Establishment><Establishment>

International Flood Network (IFNet) was officially established during the WWF3 in Kyoto March 2003

<General Meeting><General Meeting>

General Meetings of IGeneral Meetings of IFNet are held annuFNet are held annually, their dates and ally, their dates and venues being decidvenues being decided jointly by the Ched jointly by the Chairperson and the Diairperson and the Director General.rector General.

The 1st General Meeting

10 August 2003, Stockholm

Schedule after EstablishmentSchedule after Establishment

10 August, 200310 August, 2003 The 1 The 1stst General Meeting in General Meeting in Stockholm Stockholm

March, 2004March, 2004 The 1 The 1stst Preparatory Preparatory Meeting for the WWF4 Meeting for the WWF4

March, 2005March, 2005 The 2 The 2ndnd Preparatory Preparatory Meeting for the WWF4 Meeting for the WWF4

Summer/Autumn 2005Summer/Autumn 2005 Regional MeetingRegional Meeting

November, 2005November, 2005 Advance Meeting for WWF4 Advance Meeting for WWF4

March, 2006March, 2006 WWF4 WWF4

Global Flood Alert SystemGlobal Flood Alert System( GFAS )( GFAS )

One of the activities of IFNet implemented One of the activities of IFNet implemented by by

- Ministry of Land, Infrastructure and Transp- Ministry of Land, Infrastructure and Transport (MLIT)ort (MLIT)- National Space Development Agency (NA- National Space Development Agency (NASDA) andSDA) and- Infrastructure Development Institute (IDI)- Infrastructure Development Institute (IDI)

石塘樋門

On-Line

Data Processing System

・ Data for climate forecasts (realtime/near-realtime data)・ 3-hour global precipitation map (realtime/near-realtime data)

Heavy rain around the Upstream of 　○○ River

・　　 Rainfall Prediction・　　 Flood Prediction

　　 Secretariat of IFNet

Flood may occur in the downstream of ○○ River.

Around the downstream of ○○ river

It is heavy rain in the upstream of ○○ River.There is a possibility to occur a flood in X hours. Please evacuate to safe places.

Organizations in Charge of Meteorology and Disaster Prevention

Flood Flood AlertAlert

Rainfall information

Observation Satellite (GPMObservation Satellite (GPM ））

Raw DataGrand Grand StationsStations

Precipitation for three days in Elbe River Basin

(2002 flood in Europe)

Inundated area

Mulde River

Elbe River

August 14, 2002

August 20, 2002

European Flood Ex-post Situation, August 2002

European Flood 2002 European Flood 2002

Precipitation and Flow Rate of Elbe River

3-D Rain Structure3-D Rain Structure

SatellitesObservation(GPM

TRMM(4-30 km)

GroundStations

Data Processing SystemData Processing System 3-hour Global Precipitation Data3-hour Global Precipitation Data

On-Line

Probability Calculation

Present RainfallPresent RainfallEstimated Precipitation Estimated Precipitation of the Probabilityof the Probability>

Alert!(Information Dissemination to Countries Concerned)

Obtainment of Precipitation Data/Information Dissemination

Preparation for the System

Collection Collection ofof

Precipitation Precipitation DataData

Estimation of Estimation of the the

Precipitation Precipitation of of

10 to 30 Year 10 to 30 Year Return PeriodReturn Period

Probability Calculation

Rainfall

Probability year

30 50

100

200

Issuance of Flood Alert洪水アラートの発信

Daily Precipitation of Aug. 1, 2003Daily Precipitation of Aug. 1, 2003

Derived from TRMM Data of Global Real-Time 3-Hourly Precipitation Analyses (3B42RT) by NASDA

Daily Precipitation ProbabilityDaily Precipitation Probability

Derived from TRMM Data of Rain Accumulation (3B42) by NASDA

10-y

ear

Re

turn

Pe

rio

d30

-yea

r R

etu

rn P

eri

od

30-year Return Period July 26, 2003

Derived from TRMM Data of Rain Accumulation (3B42) by NASDA

Derived from TRMM Data of Global Real-Time 3-Hourly Precipitation Analyses (3B42RT) by NASDA

Daily Precipitation of Zambezi River BasinDaily Precipitation of Zambezi River Basin

Derived from TRMM Data of Rain Accumulation (3B42) by NASDA

Derived from TRMM Data of Global Real-Time 3-Hourly Precipitation Analyses (3B42RT) by NASDA

10-year Return PeriodMay 15, 2003

（ Continuous Heavy Rains ）

Daily Precipitation of South China Daily Precipitation of South China

Tokyo

N37.25 E138.0

N35.25 E138.0

N37.25 E140.0

N35.25 E140.0

Comparison of TRMM Data and AMeDAS DataTRMM データとアメダスデータの比較

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1st 6th 11th 16th 21th 26th 1st 6th 11th 16th 21th 26th 31th

J uly,2002

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tation

/day

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)

Daily rainfall (Ground rainfall gauge(AMeDAS))Daily rainfall (TRMM 3 hourly data)Accumulated AMeDAS dataAccumulated TRMM 3 hourly data

J une,2002

Comparison of TRMM Data and AMeDAS Data(No assumption of lacking data)

TRMM データとアメダスデータの比較 ( 欠測補填なし )

TRMM data; http://trmm.gsfc.nasa.gov/

Comparison of TRMM Data and AMeDAS Data(Assumption of lacking data)

TRMM データとアメダスデータの比較 ( 欠測補填あり )

TRMM data; http://trmm.gsfc.nasa.gov/

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1st 6th 11th 16th 21th 26th 1st 6th 11th 16th 21th 26th 31th

J uly,2002

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cipi

tation

/day

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)

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umul

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cipi

tation

(mm

)

Daily rainfall (Ground rainfall gauge(AMeDAS))Daily rainfall (TRMM 3 hourly data)Accumulated AMeDAS dataAccumulated TRMM 3 hourly data

J une,2002

Schedule of System DevelopmentSchedule of System Development

20032003 Study of GFAS by using the data observed Study of GFAS by using the data observed

TRMM (Tropical Rainfall Measuring Mission)TRMM (Tropical Rainfall Measuring Mission)

20042004 Development of GFAS by using TRMM dataDevelopment of GFAS by using TRMM data 11stst Test Running of GFAS in the pilot areas Test Running of GFAS in the pilot areas

20072007 CompletionCompletion