A bogus typhoon scheme,designed for the initialization of a typhoon track prediction model,is developed in thispaper.This scheme includes both effects of axisymmetric wind and asymmetric wind.Experimental forecasts us...A bogus typhoon scheme,designed for the initialization of a typhoon track prediction model,is developed in thispaper.This scheme includes both effects of axisymmetric wind and asymmetric wind.Experimental forecasts using atwo-way interactive movable nested mesh model show that the forecast skill of typhoon tracks has clearly improvedafter introducing the bogus typhoon into the initial fields.展开更多
The limited area analysis and forecast system(LAFS)was developed and has been put into operational use at National Meteorological Center since January 1991.This system can be regarded as a branch system attached to th...The limited area analysis and forecast system(LAFS)was developed and has been put into operational use at National Meteorological Center since January 1991.This system can be regarded as a branch system attached to the global assimilation and medium-range forecast system which is based on a spectral model T42L9.The main advancements as an upgrade operational system are as follows:the use of a regional fine mesh optimum interpolation(OI)analysis scheme:the realiza- tion of the nonlinear normal mode initialization for the regional model:the development of a 15L- spherical grid primitive equation model(with real topography and enstrophy conservation)and its nesting forecast with the spectral model T42L9.展开更多
文摘A bogus typhoon scheme,designed for the initialization of a typhoon track prediction model,is developed in thispaper.This scheme includes both effects of axisymmetric wind and asymmetric wind.Experimental forecasts using atwo-way interactive movable nested mesh model show that the forecast skill of typhoon tracks has clearly improvedafter introducing the bogus typhoon into the initial fields.
文摘The limited area analysis and forecast system(LAFS)was developed and has been put into operational use at National Meteorological Center since January 1991.This system can be regarded as a branch system attached to the global assimilation and medium-range forecast system which is based on a spectral model T42L9.The main advancements as an upgrade operational system are as follows:the use of a regional fine mesh optimum interpolation(OI)analysis scheme:the realiza- tion of the nonlinear normal mode initialization for the regional model:the development of a 15L- spherical grid primitive equation model(with real topography and enstrophy conservation)and its nesting forecast with the spectral model T42L9.
