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Global chemistry-climate modelling with EMAC. (English) Zbl 1202.86014

Wagner, Siegfried (ed.) et al., High performance computing in science and engineering, Garching/Munich 2009. Transactions of the fourth joint HLRB and KONWIHR review and results workshop, Leibniz Supercomputing Centre, Garching/Munich, Germany, December 8–9, 2009. Berlin: Springer (ISBN 978-3-642-13871-3/hbk; 978-3-642-13872-0/ebook). 663-674 (2010).
Summary: The Institute of Atmospheric Physics of the German Aerospace Center (DLR) uses the numerical model system ECHAM/MESSy Atmospheric Chemistry (EMAC). The model has a flexible modular structure and allows for coupled chemistry-climate simulations. Typical fields of application are related to questions regarding Earth’s climate, atmospheric chemical composition, and aerosol characteristics. In its current setup, the performance of EMAC on LRZ/ALTIX allows for multi-decadal simulations with climatologically significant results. The good performance demonstrates the multi-purpose capabilities of LRZ/ALTIX because EMAC involves various different numerical concepts and implementations of parallel decomposition. Our EMAC activities on LRZ/ALTIX are devoted to both model development and production simulations. The former comprise a new upper-boundary representation, a chemistry-transport mode, the inclusion of a mixed-layer ocean, and full-Lagrangian transport and dynamics. The latter tackle, for instance, questions related to the environmental impact of anthropogenic aerosol and gaseous substances.
For the entire collection see [Zbl 1196.65022].

MSC:

86A10 Meteorology and atmospheric physics
76M25 Other numerical methods (fluid mechanics) (MSC2010)