Analysis And Research On The Influence Of Sea Surface Temperature On Typhoon "ampil" And Typhoon "nida" In The Air-sea Coupled Model

Located on the west coast of the northwestern Pacific Ocean,China is one of the countries in the world that is severely affected by typhoon disasters.Due to the long coastline of our country,there are financial losses and casualties which caused by typhoons,especially from those make landfall on our country's coast.Developed areas suffer from even more painful losses.In this paper,we analyze sea surface temperature which is the most important factors that influence a typhoon and the air-sea interaction which cannot be ignored during the development of a typhoon by numerical experiments.These experiments are carried out to explore the influence of sea surface temperature on typhoons in the air-sea coupled model.Using high spatial resolution reanalysis sea temperature data provided by NCEP and hourly global high time resolution sea temperature data provided by NMEFC,this paper simulates and analyzes 2018 typhoon No.10 Ampil with three numerical experiments.Combined with the analysis of the typhoon's dynamic and thermal conditions,it can be seen that the SST distribution and the intensity of the potential vorticity are in good agreement;the SST determines the change in typhoon intensity by affecting the latent heat release caused by the vertical movement,so the high-resolution SST data has an impact on the simulation results of typhoon numerical experiments.Using the mature air-sea coupling model COAWST,this paper designs four sets of numerical simulation tests for No.1604 Typhoon Nida.The results show that the air-sea coupling model can control the simulation deviation of typhoon intensity within 5h Pa.Combined with the analysis of the most important physical quantities in the development of typhoon: sensible heat flux and latent heat flux,this article further illustrates the influence of air-sea interaction on the development of it.