A numerical model,which solves equations with spectral element method and resolves atmospheric near space,is developed.Model validations are performed.The spectral element model with atmospheric near space resolved (SEMANS) is integrated for 10 years under configuration of 81 local elements in each projected face of cubed sphere with spectral approximation of 8th degree Gauss-Lobatto-Legendre interpolation polynomial and 66 vertical layers with top layer pressure 4.5×10^-6 hPa.Through verification against ERA-Interim reanalysis dataset from ECMWF (European Center for Medium-Range Weather Forecasts) and COSPAR (Committee on Space Research) international reference atmosphere 1986,it is found that SEMANS reproduces features of 2 wave-lengths pattern along zonal circle in the northern hemisphere and 1 wave-length pattern along zonal circle in the southern hemisphere at 30hPa;SEMANS reproduces zones of low temperature at about 100 hPa,0.001 hPa and high temperature at about 1 hPa,above 0.0001 hPa;SEMANS also reproduces main features of zonal mean zonal wind in January and July below 0.001 hPa level.

Sharing advantages of spectral method and finite element method,a spectral element method is used in numerical study of geophysical fluid dynamics.By solving barotropic primitive equations with spectral element method,a regional barotropic atmospheric model is developed.In the model,computational domain is broken into a series of triangular elements,and variables in each element are represented as a high order Lagrangian interpolant with products of Legendre polynomials with triangular truncation.With geopotential and wind at 08 o'clock on 15 May 2006 on pressure level of 500 hPa taken as initial value and fixed lateral boundary condition,simulations of typhoon movement with maximum orders of Legendre polynomials 3 and 7 are carried out,respectively.It showns that the simulated relation between wind and pressure is rational and realization of the numerical model is successful.