Assimilation of operational storm surge forecasting model with HY-2 satellite wind

Abstract Storm surge is one of the primary causes of marine disasters in China. Numerical model forecasts serve as a critical reference in storm surge operational prediction. The prevailing storm surge numerical models typically utilize a model wind field derived from typhoon parameters as the driving force, ensuring both accuracy and timeliness. This paper presents an upgrade to the GPU version of the high-precision operational storm surge forecasting model for the China Sea, which incorporate remote sensing wind data from HY-2B、 2C and 2D satellites to assimilate and correct the model wind driven field, improving the accuracy of tropical storm surge calculations, especially in areas impacted by the right half of the typhoon.