Asian Journal of Environment and Disaster Management (AJEDM)

Volume 3 Number 2 (2011)

Asian Journal of Environment and Disaster Management 2011 3 2

doi: 10.3850/S1793924011000769

Atmosphere–Ocean–Wave Coupled Model Performing 4DDA with a Tropical Cyclone Bogussing Scheme to Calculate Storm Surges in an Inner Bay

Tomokazu Murakami1,a, Jun Yoshino2,c, Takashi Yasuda2,d, Satoshi Iizuka1,b and Shinya Shimokawa1,e
1Storm, Flood, and Landslide Research Department, National Research Institute for Earth Science and Disaster Prevention, 3-1, Tennodai, Tsukuba, Ibaraki, 305-0006, Japan.
2Environmental and Renewable Energy Systems Division, Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.


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.

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