200 - Typhoon Committee

ESCAP/WMO
Typhoon Committee Annual Review 2007
Enforcement of the law on Standardizing Meteorological
Observation
KMA published the law on standardizing meteorological
observation in Korea on December 31, 2005. The law has
been in force since July 1, 2006 to protect the lives and
property of the people from the meteorological disaster
and promote social benefits by improving the quality
of meteorological data and public use of the data (Fig.
2.2).
34 governmental and public organizations in Korea have
been separately operating meteorological instruments
and data acquisition facilities for their own purposes.
These separate operations resulted in not only duplicate
investments, but also difficulties in sharing the data with
each other.
Now, in accordance with the law on standardizing
meteorological observation, Korea expects to establish
more efficient meteorological observation network
and then to reduce meteorological disasters including
typhoon. All the data acquired by each organization
will be collected to KMA and their quality will be
automatically checked in real time. Additionally, we can
quickly cope with severe weather events and expect to
increase positive economic effects in fields of various
industries.
KMA will assess the grade of all the meteorological
observation facilities in Korea, on the basis of the
observation site and its exposure, meteorological
instrument, observation procedure, data quality control
and data exchange, and so on. The facilities in lower
grade will be improved or removed.
Northeast Asia) and extension to global (GoWAM, 1.25°
resolution) domain. In 2005, the KMA replaced the NEC
SX5 with a 1024-CPU Cray X1E system, which is a Parallel
Vector Processor (PVP) machine with 128 node modules.
The coastal ocean wave prediction system (CoWAM),
which may comply intricate those environment, is
designed and under testing mode. The mesh size of
1km with 6 encompassing 3° longitude and 2° latitude
domains nested inside regional ocean wave prediction
system. The directional wave spectra at boundaries were
provided from 1/12° upgraded version of operational
ReWAM. The WAVEWATCH-III code (developed at NOAA)
is used for the upgraded ReWAM and new CoWAM
system. To secure the required model performance in
MPP architecture of new supercomputer, the Message
Passing Interface (MPI) is realized in model source level.
The sea surface wind and significant wave height are
verified routinely in monthly bases. The global moored
buoy data including the coastal ones operated by KMA
and remote sensing data from Topex/Poseidon, Jason
retrieval wave height and QuikSCAT retrieval wind data
are used for verification of wave prediction system.
The third generation WAM cycle 4 (WAMDI, 1988) was
adopted in application of Northeast Asia and global
wave prediction. Two wave prediction system GoWAM
(Global WAve Model), ReWAM (Regional WAve Model)
are running operationally twice daily (00 & 12UTC) since
then (Park, 2000). The two systems are set up on a fairly
standard configuration. The wave spectrum is resolved
into 24 angle bins at 15 degree resolution and 25 frequency
bins from 0.0418 Hz to 0.4114 Hz. The source terms and
propagation terms are integrated every 6 minutes for
Ocean Wind Wave Prediction System
KMA has operated numerical ocean wave prediction
system since 1992. The 1st major upgrade had been done
in 1999 with adaptation of the 3rd generation wave model
(WAM) for regional (ReWAM, 0.25° resolution, covers
ReWAM and 12 minutes for GoWAM. The GDAPS T426L40
provides the sea surface wind in every 12-hour interval
for GoWAM and the RDAPS 30km for ReWAM in every
3-hour interval. As the wave observation data are not
assimilated in both systems, the previous 12 hour job
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