A new dynamical core for the Met Office's global and regional modelling of the atmosphere

TLDR

The paper describes a computational scheme suitable for numerical weather prediction and climate modelling across a wide range of length scales. The scheme is non‑hydrostatic, fully compressible, avoids shallow atmosphere approximations, and employs semi‑implicit, semi‑Lagrangian time‑integration. The scheme serves as the dynamical core of the Met Office’s unified model for operational weather prediction and climate studies. © Crown copyright, 2005; Royal Meteorological Society.

Abstract

A computational scheme suitable for numerical weather prediction and climate modelling over a wide range of length scales is described. Its formulation is non-hydrostatic and fully compressible, and shallow atmosphere approximations are not made. Semi-implicit, semi-Lagrangian time-integration methods are used. The scheme forms the dynamical core of the unified model used at the Met Office for all its operational numerical weather prediction and in its climate studies. © Crown copyright, 2005. Royal Meteorological Society