LAPORAN TAHUNAN 2016

Siri masa bagi simulasi ketinggian ombak signifikan model ramalan numerikal ombak JMA MRI III tanpa skim laut
cetek (SWH_D), dengan skim laut cetek dan pencerapan satelit AVISO
Time series of significant wave height for; JMA MRI-III numerical wave model simulation without the shallow water
scheme (SWH_D), with the shallow water scheme (SWH), and the AVISO satellite observation
Melalui kertas penyelidikan bertajuk “The Effect of
Shallow Water Calculation in JMA MRI III Wave
Model Simulation during Typhoon Sonamu and
Typhoon Shanshan”, MMD telah berjaya menambah
baik ketepatan simulasi ramalan ombak di perairan
negara dan sekitarnya dengan memasukkan skim
pengiraan kesan laut cetek ke dalam fizik model
ramalan numerikal ombak.
Through the research paper titled “The Effect of
Shallow Water Calculation in JMA MARI III Wave
Model Simulation during Typhoon Sonamu and
Typhoon Shanshan”, MMD has succeeded in
improving the accuracy of wave forecast simulation
in the waters of country and its surroundings by
incorporating a shallow water scheme into numerical
wave model’s physics.
Model JMA MRI III yang diadaptasi dari Japan
Meteorological Agency (JMA) berjaya menghasilkan
pekali korelasi setinggi 0.80 dalam proses verifikasi
menggunakan data boya tsunami di perairan Pulau
Layang-Layang.
Ketepatan sehingga hampir 93% pula dapat dilihat
melalui verifikasi simulasi model dengan data
pencerapan satelit altimetri AVISO. Kajian kes
dilakukan semasa Taufan Sonamu dan Taufan
Shanshan berada berhampiran perairan Laut China
Selatan pada tahun 2013.
The JMA MRI III model adapted for Malaysian
waters from the Japan Meteorological Agency (JMA)
obtained a high statistical correlation of 0.80 during
the verification test using tsunami buoy data in the
waters off Pulau Layang-Layang.
A high accuracy of 93% was also observed through
comparison between model simulation and AVISO
satellite altimetry observation. The case studies
conducted for both Typhoon Sonamu and Shanshan
were conducted in the vicinity of the South China Sea
in year 2013.
Laporan Tahunan 2016 Annual Report Jabatan Meteorologi Malaysia | 60