Short-term forecasting with a multi-level spectralprimitive equation model part II hemispheric prognoses and verification

Abstract

The spectral global baroclinic primi-tive equation model described in Part I of this paper has been extensively tested. The model has been run daily from operational analyses for over a year. From this large sample of fore-casts, verification statistics have been collected and compared with similar statistics collected from three compe-titive grid-point models. The spectral model is also compared with the grid- point models in a synoptic case studyA second case study demonstrates the effect of horizontal resolution and physical effects on spectral model forecasts. The results of these experi-ments demonstrate that the spectral model is highly competitive with other models, in terms of both a..