This paper is devoted to the time integration of atmospheric transport-chemistry problems. Due to the large number of species and the 3D nature off-the-shelf solvers are not feasible. This has led to the use of special techniques. Most popular is operator splitting. This paper presents a comparison between standard operator splitting, source splitting and approximate matrix factorization. All methods under consideration are comparable in costs measured step wise. The comparison is directed at real-life problems. For that purpose a regional air pollution model is used.

Partial Differential Equations (acm G.1.8), Interpolation (acm G.1.1), PHYSICAL SCIENCES AND ENGINEERING (acm J.2)
Finite difference methods (msc 65M06), Method of lines (msc 65M20), Complexity and performance of numerical algorithms (msc 65Y20)
Modelling, Analysis and Simulation [MAS]
Computational Dynamics

Blom, J.G, & Verwer, J.G. (1999). A comparison of integration methods for atmospheric transport-chemistry problems. Modelling, Analysis and Simulation [MAS]. CWI.