Using the Asymmetrical Typhoon Model to Calculate the Typhoon High Wind Distribution in China Sea and Adjacent Regions

This paper used the asymmetrical typhoon model, combined with tropical cyclone (TC) central pressure and wind speed data of Shanghai Typhoon Institute of China Meteorological Administration and reanalysis data of Japan Meteorological Agency to calculate the 2-hourly wind field of TC which affected China sea and its adjacent regions from 1978 to 2007, got the 50km×50km grid wind speed of TC. And automatic meteorological observing station data was used to compare with the calculating results, the results indicated that calculating wind speed comparatively tallies with the observation wind speed. After that, Poisson-Gumbel joint extreme value model was adopt to calculate the wind speed of N years return period of each grid under the influence of TC, and finally the design wind speed can be provided for the development and safe operation of China offshore wind farm and other ocean engineering.