hydro-meteorological networkof Vietnam in AMY08

Nguyen Thi Tan ThanhNational Hydro – Meteorological Service of Vietnam (VNHMS)

ktcaokhong@hn.vnn.vn

Asian MONSOON YEAR 2008 (amy08) Workshop Bali, Indonesia, September 03 - 04, 2007

CONTENTCONTENT

1. Introduction

2. Network of Stations in AMY08

3. Operational H-M Models in NCHMF

4. Collaboration in MAHASRI

1. Introduction1. Introduction

- Up to now, Vietnam H-M network has more than 1200 stations and gauging places.- Very limited number of stations are in the GBSN or RBSN: 25 synoptic stations, 03 upper – air stations are sending TA and TB, 02 PILOT stations.- Need to know the standard data requirement for AMY08, which can contribute by all countries.- Improving the operational H-M forecasting system is a strong demanding to VNHMS

2 – Network of Stations in AMY082 – Network of Stations in AMY08

2.1. Meteorological station network

8obs/day, all Met.elements, except Solar Radiation.

- AWS in Danang city

- 57 class I

- 7 class II

Among this:

- 25 International reported stations

- 39 National synoptic reported Stations

2 – Network of Stations in AMY08 (cont.)2 – Network of Stations in AMY08 (cont.)

2.2. Upper – Air Station Network:- 5 radiosounding stations: 2obs./day

at 00Z and 12Z, only 3 stations international reported TA, TB, TC, TD + 2 new stations + higher spatial resolution.

- 8 PILOT stations: 00Z2.3. Weather Radar Network- 3 conventional weather radar

stations in the Northern part of VN: 3 PPI – 256 km scans at 0.5, 1.5, 2.5deg. in 10min

- 3 DWSR in the Southern part of VN: 14 elevations volume scan in 240km

2 – Network of Stations (cont.)2 – Network of Stations (cont.)

2.4. Marine H-M Station Network

- 11 stations on island- 5 coastal stations

- 1 Research vessel: 2 campaigns/year in 4 months

JEPP-Indochina NetworkJEPP-Indochina Network

• 1 AWS on 900m mountain area, 30km from Danang

• 34 automatic rain-gauges in the Middle part of Vietnam

• 9 automatic water level sensors in 03 river systems

3. Operational H-M Models in NCHMF of Vietnam

3.1. International GTS channels

• HaNoi - MOSCOW: 100 bps

• HaNoi -Bejing: 75 bps

• HaNoi - Bangkok: 1200bps

• PCVSAT: HaNoi - Bejing: 9600bps

3.2. NWP models

• Run operationally HRM (28 km) since 5/2002, (14km) since 7/2004.

• ETA model run (22 km) in experimental mode since June 2005, semi-operational (May, 2006)

• Barotropic models for TC tracking (BARO & BAR) for typhoon season 2003, 2004, 2005, 2006

• Post processing (display & diagnostic output): GSM(JMA), TLAPS (BoM), AVN(NCEP), NOGAPS, ECMWF ...

• Other software to serve as tools for forecasters

Initial & Boundary

data (GME) taken from

DWD(~165 MB/1

run)

RHMC

PC-basedLINUX-OS

4 nodes (8 CPU)

Run_Gme2hrm

Run_ Hrm

Graphics

Output (Grib, ASCII)

Other models (WAM, Storm Surge)

Hydrological Model

LAN-NCHMF

WEB site

Ftp- Server NCHMF

(Archive GME)

Output

FLOW CHART OF THE OPERATIONAL GME-HRM MODEL

at NCHMF

Ad river Thao river Lo river

Hµ Néi

HoaBinh R.

Rainfall 

Rainfall 

Rainfall 

Yªn Yªn B¸iB¸i

Tuyªn Tuyªn QuangQuang

FIRRFIRRFIRR

Reservoir Regulation

Inflow forecast into Hoa Binh Reservoir on Da River; flow at YenBai on Thao River, at TuyenQuang on Lo River and HoaBinh reservoir regulation.

Hydrologic Model FIRR using 4 combined methods:

Unit Hydrograph, Duhamel Integral, Kinematic Wave vµ Reservoir Regulation.

3.3. Hydrological Forecast

3.3. Hydrological Forecast

Observed and forecasted

rainfall

DEM

Forest Coverage

Map

MARINE MODEL

Out put Q~t

Distributed Model MARINE (France) with DEM và GIS, rainfall-runoff forecast inflow into Hoa Binh Reservoir on Da River

Main menu of the Software

Icons of zoom in, zoom out, move screen

Coordinates of mouse pointer

Check box to display/hide Hydro-Met stations

Map of river network, hydromet stations, diverge,

retard areas

Forecasting year

Flood forecasting scheme for upstream Red River

Tools to zoom in. zoom out, move

screen

Popup menu

Short-term flood forecasting software for the Red River system with lead time 6 – 48hours; using rainfall-runoff, related water

level/discharges methods, SSARR model and step multi-regression

4. International Collaboration 4. International Collaboration 1. To develop a National Data Integration System2. Higher temporal resolution of data can be

conducted with the financial support.3. Implementation of 4D - Data Assimilation.4. To improve the operational numerical models in

NCHMF of Vietnam5. To improve HM operational forecasting

technology, especially the forecasts of weather disturbances, floods and flash floods

6. Capacity building: training, workshop, education, exchange scientists etc...

Thank you very much Thank you very much for your attention!for your attention!