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Asian MONSOON YEAR 2008 (amy08) Workshop Bali,
Indonesia, September 03 - 04, 2007
hydro-meteorological network of Vietnam in
AMY08 Nguyen Thi Tan Thanh National Hydro
Meteorological Service of Vietnam
(VNHMS) ktcaokhong_at_hn.vnn.vn
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CONTENT

• Introduction
• Network of Stations in AMY08
• Operational H-M Models in NCHMF
• 4. Collaboration in MAHASRI

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1. 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

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2 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

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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 00Z
• 2.3. 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

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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

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JEPP-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

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3. Operational H-M Models in NCHMF of
Vietnam
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3.1. International GTS channels

• HaNoi - MOSCOW 100 bps
• HaNoi -Bejing 75 bps
• HaNoi - Bangkok 1200bps
• PCVSAT HaNoi - Bejing 9600bps

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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

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FLOW CHART OF THE
OPERATIONAL GME-HRM MODEL at NCHMF
Ftp- Server NCHMF (Archive GME)
RHMC
Output
LAN-NCHMF
Internet
WEB site
Input
Output
PC-based LINUX-OS 4 nodes (8 CPU)
Run_Gme2hrm
Initial Boundary data (GME) taken from DWD(165
MB/1 run)
Run_ Hrm
Output (Grib, ASCII)
Other models (WAM, Storm Surge) Hydrological
Model
Graphics
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• 3.3. Hydrological Forecast

Hydrologic Model FIRR using 4 combined methods
Unit Hydrograph, Duhamel Integral, Kinematic Wave
vµ Reservoir Regulation.
FIRR
FIRR
Thao river
Lo river
Ad river
Rainfall  
Rainfall  
Rainfall  
Yªn Bi
Tuyªn Quang
HoaBinh R.
Reservoir Regulation
Hµ Néi
Inflow forecast into Hoa Binh Reservoir on Da
River flow at YenBai on Thao River, at
TuyenQuang on Lo River and HoaBinh reservoir
regulation.
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Distributed Model MARINE (France) with DEM và
GIS, rainfall-runoff forecast inflow into Hoa
Binh Reservoir on Da River
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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
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4. International Collaboration

• To develop a National Data Integration System
• Higher temporal resolution of data can be
  conducted with the financial support.
• Implementation of 4D - Data Assimilation.
• 4. To improve the operational numerical models
  in NCHMF of Vietnam
• 5. 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...

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Thank you very much for your attention!