A Description of the GFDL Global Spectral Model

摘要: Abstract A multi-level, global, spectral transform model of the atmosphere, based upon spherical harmonies, has been developed at GFDL. The basic nine sigma levels in vertical and rhomboidal truncation wavenumber 30. However, finer or resolution versions are available as well. model's efficient semi-implicit time differencing scheme does not appear to adversely affect medium range predictions. physical processes commonly associated with grid point GCM'S. Two unique features a linearized virtual temperature correction an optional, spectrally-computed non-linear horizontal diffusion scheme. parameterization mixing turbulent closure method is also optional. GFDL widely utilized for extended weather prediction experiments. In addition, it adapted applied climate studies, four-dimensional data assimilation experiments even atmosphere Venus. T...