www.geosci-model-dev-discuss.net/4/457/2011/ doi:10.5194/gmdd-4-457-2011 © Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License. The atmosphere-ocean general circulation model EMAC-MPIOM 1The Cyprus Institute, Energy, Environment and Water Research Center, Nicosia, Cyprus 2Atmospheric Chemistry Department, Max-Planck Institute for Chemistry, Mainz, Germany 3Ocean in the Earth System, Max-Planck Institute for Meteorology, Hamburg, Germany *now at: Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany Abstract. The ECHAM/MESSy Atmospheric Chemistry (EMAC) model is coupled to the ocean general circulation model MPIOM using the Modular Earth Submodel Sytem (MESSy) interface. MPIOM is operated as a MESSy submodel, thus the need of an external coupler is avoided. The coupling method is tested for different model configurations, proving to be very flexible in terms of parallel decomposition and very well load balanced. The run time performance analysis and the simulation results are compared to those of the COSMOS (Community earth System MOdelS) climate model, using the same configurations for the atmosphere and the ocean in both model systems. It is shown that our coupling method is, for the tested conditions, approximately 10% more efficient compared to the coupling based on the OASIS (Ocean Atmosphere Sea Ice Soil, version 3) coupler. The standard (CMIP3) climate model simulations performed with EMAC-MPIOM show that the results are comparable to those of other Atmosphere-Ocean General Circulation models. Discussion Paper (PDF, 6031 KB) Supplement (101 KB) Interactive Discussion (Closed, 7 Comments) Final Revised Paper (GMD) Citation: Pozzer, A., Jöckel, P., Kern, B., and Haak, H.: The atmosphere-ocean general circulation model EMAC-MPIOM, Geosci. Model Dev. Discuss., 4, 457-495, doi:10.5194/gmdd-4-457-2011, 2011. Bibtex EndNote Reference Manager XML |