Global semi-Lagrangian atmospheric model based on compact nite-di erences

Global Semi-lagrangian Atmospheric Model Based on Compact Nite-diierences and Its Implementation on a Parallel Computer N ˚ 3080 Global Semi-lagrangian Atmospheric Model Based on Compact Nite-diierences and Its Implementation on a Parallel Computer

The semi-Lagrangian atmospheric model on the sphere based on compact nite diierences is presented. In the two-dimensional case, the potential vorticity is used as one of the prognostic variables. Fourth-order compact nite diierences are used to discretize rst-and second-order derivatives. The results including real data tests presented for 2D shallow water version with orography demonstrate its...

Global Semi-lagrangian Atmospheric Model Based on Compact Nite-diierences and Its Implementation on a Parallel Computer

The semi-Lagrangian atmospheric model on the sphere based on compact nite diierences is presented. In the two-dimensional case, the potential vorticity is used as one of the prognostic variables. Fourth-order compact nite diierences are used to discretize rst-and second-order derivatives. The results including real data tests presented for 2D shallow water version with orography demonstrate its...

Global 3D semi-Lagrangian model based on compact finite differences

A Parallel Implementation of the Hirlam Model

This paper is a status-report describing the e ort to implement the HIRLAM numerical weather prediction model on a MasPar MP{1 system. Several results of the parallel implementation of the forecast model are presented. Di erences with more traditional implementations on vector-computers are outlined. While work is still going on, this report mainly focuses on explicit Eulerian methods. Semi-imp...

Adaptive hierarchical grid model of water-borne pollutant dispersion

Water pollution by industrial and agricultural waste is an increasingly major public health issue. It is therefore important for water engineers and managers to be able to predict accurately the local behaviour of water-borne pollutants. This paper describes the novel and ecient coupling of dynamically adaptive hierarchical grids with standard solvers of the advection±di€usion equation. Adapti...