Implementation Plan for the Korean
Demonstration Project (KDP)
2007. 12. 3

Deg-Hyo Bae (dhbae@sejong.ac.kr)
Professor, Dept. of Civil & Env.
Env. Engrg.,
Engrg., Sejong University, Korea

The Goal of GEOSS/AWCI
9 To better understanding the mechanism of variability in the Asia water cycle
9 To improve its predictability for various water resources applications
9 To help for mitigating water-related disasters (floods, droughts, water qualities)

The Goal of GEOSS
9 To achieve comprehensive, coordinated and sustained observations of the Earth system- Improve monitoring of the changing state of the planet- Increase understanding of complex Earth processes- Enhance the prediction of the impacts of environmental change

Three Targeted Issues and their Backgrounds for KDP
Use of Satellite and Numerical Data for Flood Management* Objectives- To utilize satellite data for flood and drought management- To develop a short- and long-term weather forecast system forthe application of water resources management* Method* Major Outcomes and Future Works- Development of downscaling techniques for connecting
global-meso-hydro scale model- Development of satellite-based flood management scheme- Design and implementation of weather forecasts for w.r. applications

Development of Radar Rainfall & Flood Forecasting SystemNowcast* Objectives- To develop a radar rainfall and flood forecasting systemfor both urban and rural watersheds* Method
0.5hr forecast- Consists of four processes: Meteorological Forecasting Process,Hydrologic Observation Process, Hydrologic Modeling Process,and Urban Flood Forecasting & Warning Process

1hr forecast

Flash
Flash FloodFloodForecasting
Forecasting SystemSystemDevelopmentDevelopment
Radar Rainfall

Flash Flood Guidance

Forecast Rainfall

Flash Flood Threat

2hr forecast* Major outcomes and Future Works- To forecast real-time radar-driven rainfalls coupled with satellite data
- To provide algorithms for real-time flood forecast

Climatic Change Impact & Vulnerability Assessments on Water Resources* Objectives- To evaluate the climate change impact assessment on the whole
Korean sub-basins* MethodGCM (ECHO-G) Simulations
Downscaling (MM5) Scheme
2015s-20-4040
200-20-40-60-40 -20 0 20 40 60 80% change in Autumn% change in Autumn

300-30-60-60060120 180% change in Winter600-20-40-40 -20 0 20 40 60 80% change in Autumn% c h a n g e in S u m m e r

60

Hydrologic Model (PRMS) Simulations

20-60-40 -20 0 20 40 60 80% c h a n g e in S u m m e r% c h a n g e in S u m m e r-60

40% c h a n g e i n S p r in g

02075s

2045s
Han
NakGum
SumYou20% c h a n g e in S p r i n g% c h a n g e in S p r i n g

40300-30-60-60

060

120 180% change in WinterImpact Assessment on WR6030* Major Outcomes & Future Works

0-30-60-60060120 180% change in Winter- Relative changes of annual mean P, T, ET and Q during
the future periods relative to the reference period- Understanding and reducing the uncertainties of climate change
and their hydrologic applications

Nominated River Basin: Choong-Ju Dam Basin
Key Map

River Basin Information
LocationApp. 128ºE, 37ºN

Basin Areas

6662 km2

Catchment Lengths

321.9 kmElevation70-1570 EL.m

Land Use

Mountain

Annual MAP

1149 mmObservation Systems and Data
Raingauge St. 46 (weather radar data)

Fig.
Fig. Study
Study area
area ofof Choong-JuChoong-Ju damdam sitesite

Stage St.

5Met. St.

3

Observation System
SURFACEHYDROLOGICALAir Temperature

3Streamflow

5Humidity3

Reservoir (Water level, Outflow)

1

Wind

3

Groundwater Table

Pressure

3

Evaporation

3Precipitation

46

Soil Temperature

3

Snow Depth

3

Skin Temperature

3

Soil Moisture

ATMOSPHERE

Upward Shortwave Radiation

Planetary Boundary Layer Tower

Downward Longwave Radiation

Pilot Baloon

Net Radiation

3

Radiosonde

Sensible Heat Flux

RadarLatent Heat Flux

WATER QUALITY

Ground Heat Flux

Groundwater Quality Indicators

8CO2 Flux

Surface water Quality Indicators

26

available※※ Remarks
Remarks -- Korea
Korea have
have 12
12 upperupper air
air measurement
measurement stations
stations andand 22 CO2CO2 flux
flux stations
stations-- 33 radiosonderadiosonde stations
stations (Sokcho,(Sokcho, Pohang,Pohang, Gosan)
Gosan)

GIS and Other data
DEM

DEM

Choong-Ju Watershed
Land CoverLandusewaterurban
barrenwetlandpastureforestpaddy
farm

70 - 320
321 - 570
571 - 820
821 - 1070
1071 - 1320
1321 - 1570

Soil Type
SoilClass
ANRYONGASAN
BAEGSANBANCHEONBANHOㆍGOGㆍㆍHydrologic Models
Hydraulic Design

Flood Analysis- Rational formula- HEC-1, HEC-2- Unit hydrograph- SSARR, SWM, SWMM, USGS, DAMBRK- Synthetic unit hydrograph- Storage function model, Clark- TANK model- PRMS, SLURP, SWAT, TOPMODEL

Urban Runoff Design / Analysis

Flood Event Analysis- ILLUDAS- Storage function model- RRL- HEC-1- SWMM- Sacramento model- Rational formula

Thank you for your attention