Sensitive Numerical Simulation on Typhoon in the East China Sea

By using NCEP FNL global reanalysis data(1°×1°),we applied WRF3.4(Weather Research and Forecasting Model.version 3.4)to explore the impacts of different combinations of cumulus parameterization schemes and boundary layer schemes on the simulation of the track and intensity of fourteen typhoons which influenced East China Sea and to compare and analyze the influence on the large scale circulation and release of latent heat by different combinations of parameterization schemes.The results were showed that even the best combination of parameterization scheme was different for each typhoon on the simulation of the typhoonsu0027 track,the combination of cumulus parameterization scheme KF and boundary layer scheme MYJ produced the best simulation on the track overall,and the combination of cumulus parameterization scheme KF and boundary layer scheme YSU produced the best simulation on the intensity of the typhoons overall.By analyzing the typical typhoons,the results were showed that the combination of cumulus parameterization scheme KF and boundary layer scheme MYJ produced the best simulation on the track due to its best simulation on the large scale circulation,and when the typhoonu0027s intensity rapidly strengthened,sensitivity of the combination of cumulus parameterization scheme KF and boundary layer scheme YSU was better than the combination of cumulus parameterization scheme KF and boundary layer scheme MYJ,and when the typhoonu0027s intensity rapid strengthened,sensitivity of the combination of cumulus parameterization scheme KF and boundary layer scheme MYJ was better than the combination of cumulus parameterization scheme KF and boundary layer scheme YSU.