Typhoon Effects on the South China Sea Wave Characteristics During Winter Monsoon
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Ocean wave characteristics in the western Atlantic Ocean Hurricane Region to tropical cyclones have been well identified, but not the regional seas in the western Pacific, e.g., the South China Sea Typhoon Region. This is due to the lack of observational and modeling studies in the regional seas of the western Pacific. To fill this gap, Wavewatch-III WW3 is used to study the response of the South China Sea SCS to Typhoon Muifa 2004. The major purposes are to find the similarity and dissimilarity of wave characteristics between the two regions, and to evaluate the WW3 capability to typhoon forcing. The WW3 model is integrated from the JONSWAP wave spectra with a tropical cyclone wind profile model, simulating Typhoon Muifa, from 16 to 25 November 2004. This study shows strong similarities in the responses between Hurricane and Typhoon Regions, including strong asymmetry in the significant wave height Hs along the typhoon translation track with the maximum Hs in the right-front quadrant of the typhoon center, and asymmetry in the directional wave spectra at different locations frontward, backward, rightward, and leftward around the typhoon center. The unique features of the SCS wave characteristics to Muifa are also discussed.
- Physical and Dynamic Oceanography