200 - Typhoon Committee

ESCAP/WMO
Typhoon Committee Annual Review 2007
development of Tropical Cyclone as shown from satellite
images (cited from Dvorak, 1992). By using both VIS
(visible) and IR (infrared) imageries from MTSAT, the
weather forecasters understood that more clearly to
identify the cloud pattern such as: Cb cluster, curved
band, Embed (CDO), eye, shear and low-level vortex
patterns. After having practiced many exercises by
using different categories / conditions of cloud, by those
Forecasters can identify the cloud pattern. Determine
cloud system centre (CSC), determine T number (DT),
model expected T number (MET), Pattern T number (PT)
and Final T number (FT). The EIR analysis using and we
analysis using VIS images enhanced infrared images to
estimate intensity. Analysis Cloud system of development
and weakening of Tropical Cyclones. Analyse surface
observation by using compass method to determine
pressure center of Tropical Cyclone. MTSAT water vapour
channel could reveal the moisture transport at mid and
upper levels and utilise the rainfall estimation products
from other center for combining, DMH could understand
the moisture field within a tropical Cyclone environment.
On analysing Satellite imageries by applying DVORAK
technique are helpful to accurate forecast and issue
warning timely for assistance government and public to
take prevention and activities in Lao PDR.
• Interaction with users
Since 2007 DMH improved delivering the daily weather
forecast by real voice of forecaster through telephone
line and broadcast on air by National Radio station. DMH
website has been established and provides many products
through this web page such as: Radar observation,
satellite imageries, data observation (minimum and
maximum temperature and daily rainfall) for 22 stations,
Daily forecast, 3 day city forecast, Weekly forecast,
flood forecast and other…. Many agencies could access
and utilize the weather forecast products from DMH and
general users could already watch DMH products under
WMO website. Under project of establishment of the VCP
(WMO) on Broadband Internet Connection in Lao PDR
that the DMH staffs could access through internet more
rapidly to get information, products of NWP models,
weather forecast for various times, climate products,
tropical cyclone advisory, home page etc.. Huge centres
such as: National climate data USA, seasonal forecast
UK, JMA, KMA and other meteorological centres in the
world.
- Open house in DMH (observation station, data
collection and transmission, forecasting, Radar tower)
for elementary and high school students was conducted
on 15 and 16 October 2007 (about 200 students have
been visited). The purpose of this activity is to supply
to them with the basis knowledge about the role of DMH
so that some of them will be come interested in science
and technology.
- Seminar at DMH on 18 October, 2007 for the Mass
– media ( TV , Radio , Newspaper, Magazines) and line
Agencies (information users, about 30 persons). The
purpose of this activity is to supply the basis knowledge
to them so that they will become able to use information
effectively to contribute the protection of people’s lives
and property.
- Workshop at DMH on 22 - 23 October, 2007 for the staff
of PHMS (provincial Meteorological and Hydrological
Station) , line agencies and school teachers ( 30
persons). The purpose of this activity is to supply
the basis knowledge to them and to encourage them to
teach the knowledge to the school student and the local
people.
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