All numerical models of the atmosphere are based upon the same set of governing equations which are described here in non-mathematical terms. Numerical models differ in the approximations and assumptions made in the application of these equations, how they are solved to make a forecast and in the physical parametrizations . The UK Met.
Office is one of several organisations that run operational weather forecasting models.
The UK Met. Office is only one of many National Meteorological Services . A brief history of computing in the Met. Numerical Models at UK Met.