200 - Typhoon Committee

ESCAP/WMO
Typhoon Committee Annual Review 2007
In Malaysia
Progress in Member’s Regional Cooperation,
Important, High-Priority Goals and
Objectives
a. Hardware and/or Software Progress
JMA-MMD Storm Surge Model
Malaysian Meteorological Department (MMD), with the
consent from Japan Meteorological Agency (JMA), runs
a JMA Storm Surge Model on operational mode since
July 2007. It is a numerical model developed by JMA
to simulate and predict storm surges, especially those
caused by tropical cyclones. The numerical scheme
of the model is based on the shallow water equations
and thus this model is two-dimensional. The model has
features as listed below:
(a) It computes storm surges due to wind setup and
inverted barometer effect;
(b) Accepts two types of meteorological forcing
data:
(i) GRIB format files containing surface wind and
pressure fields, and
(ii) Tropical Cyclone Best Track Data provided
by the Regional Specialized Meteorological Centre
Tokyo - Typhoon Center.
(c) Writes the storm surge calculation results in a
GRIB file using FORTRAN 77 and displays using Grid
Analysis and Display System (GrADS).
The model calculates the storm surges anomaly every
hour. However the model output is displayed at
6-hourly interval together with wind field map up to 7
days forecast.
Example of
JMA–MMD
Storm Surge
model output:
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