The Atmosphere-Ocean General Circulation Model EMAC-MPIOM 1The Cyprus Institute, Energy, Environment and Water Research Center, Nicosia, Cyprus
Model Description Paper
09 Sep 2011
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
Received: 08 February 2011 – Published in Geosci. Model Dev. Discuss.: 04 March 2011 Abstract. The ECHAM/MESSy Atmospheric Chemistry (EMAC) model is coupled to the ocean
general circulation model MPIOM using the Modular Earth Submodel System
(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 shows a comparable run-time performance 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.
Revised: 06 September 2011 – Accepted: 06 September 2011 – Published: 09 September 2011
Citation: Pozzer, A., Jöckel, P., Kern, B., and Haak, H.: The Atmosphere-Ocean General Circulation Model EMAC-MPIOM, Geosci. Model Dev., 4, 771-784, doi:10.5194/gmd-4-771-2011, 2011.