Method and system for constructing typhoon wind field with long recurrence period

The invention discloses a construction method and system of a long-return-period typhoon wind field, and relates to the technical field of typhoon wind field construction.The method comprises the steps that typhoon sets are classified according to typhoon path types, and typhoon subsets corresponding to different typhoon path types are obtained; and determining most probable strength parameter combinations corresponding to different typhoon path types based on the first probability distribution of the typhoon frequency, the second probability distribution of the lowest central air pressure and the third probability distribution of the maximum wind speed so as to construct a typhoon wind field of each typhoon in the typhoon set. Inputting each typhoon wind field into the spectral wave model to obtain the maximum wave height and the wave direction corresponding to the maximum wave height so as to determine the most unfavorable typhoon path of each wave direction, and constructing the long-return-period typhoon