Abstract: The performance of the NMC Global Medium-Range Model in forecasting the March 1993 ?superstorm? at various lead times is assessed. The forecasts of mean sea level pressure, 1000?500-mb thickness, 500-mb geopotential height ...

Abstract: By use of the time-dependent diffusion equation it is shown that a heat-balance equation for an evaporating raindrop based on the ?quasi-stationary? assumption (?//t = 0) is accurate. This equation is then used to obtain ...

Abstract: The operational model used to generate medium-range forecasts at the National Meteorological Center (NMC) has undergone significant changes in the last few years, resulting in considerable improvement in the skill of its ...