Abstract: A global, three-layer, primitive-equation forecast model in spherical and σ coordinates on a 3.75° latitude-longitude grid has been developed. It has a boundary layer and two layers in the troposphere, with the top of the ...

Abstract: An improved numerical prediction model for forecasting the paths of hurricanes and typhoons is presented. A constant circular vortex representing the tropical cyclone is translated each time step so that it is always ...

Abstract: A primitive equation barotropic forecast model is employed independently at 700 mb. and 300 mb. to produce a wind forecast to 36 hr. once daily (from 1200 gmt real data analyses) for the entire tropical belt between 48°N. ...

Abstract: A primitive-equation free-surface barotropic model was designed for the tropical belt. By the use of Shuman's difference system, experiments were made to test the effect of both approximate and correct boundary conditions ...

Abstract: 500-mb. barotropic and 500-mb. baroclinic numerical forecasts for two cases, a developing baroclinic cyclone and a quasi-barotropic cyclone, are presented and compared. The barotropic forecasts did not indicate accurately ...