Asian Journal of Environment and Disaster Management (AJEDM)Volume 3 Number 2 (2011)
Atmosphere–Ocean–Wave Coupled Model Performing 4DDA with a Tropical Cyclone Bogussing Scheme to Calculate Storm Surges in an Inner Bay
Typhoon MELOR struck Ise Bay in Japan on October 2009, creating one of the largest storm tides on record–a storm tide of 2.6 m–observed at Mikawa Port. Correct evaluation of sea surface winds must be done to produce highly accurate calculation of the storm surge generated by that typhoon. An atmosphere-ocean-wave coupled model performing four-dimensional data assimilation with the tropical cyclone bogussing scheme (4DDABS) was developed for accurate reproduction of the sea surface winds and the storm surge related to the typhoon. Its validity and utility were verified by comparing the observed results with those computed according to the typhoon tracks, wind speeds, and storm tides. Comparisons revealed that the calculated results obtained using the coupled model with the 4DDABS show good agreement with the observed data of the storm surge generated by typhoon MELOR (2009).
Keywords: Storm surge, Typhoon, Numerical simulation, Four-dimensional data assimilation, Tropical cyclone bogussing scheme.