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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 2
Geosci. Model Dev., 3, 717-752, 2010
https://doi.org/10.5194/gmd-3-717-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

Geosci. Model Dev., 3, 717-752, 2010
https://doi.org/10.5194/gmd-3-717-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

Model description paper 22 Dec 2010

Model description paper | 22 Dec 2010

Development cycle 2 of the Modular Earth Submodel System (MESSy2)

P. Jöckel1,*, A. Kerkweg2, A. Pozzer3, R. Sander1, H. Tost1, H. Riede1, A. Baumgaertner1, S. Gromov1, and B. Kern1 P. Jöckel et al.
  • 1Max-Planck Institute for Chemistry, Air Chemistry Department, P.O. Box 3060, 55020 Mainz, Germany
  • 2Institute for Atmospheric Physics, University Mainz, 55128 Mainz, Germany
  • 3Cyprus Institute, EEWRC, P.O. Box 27456, 1645 Nicosia, Cyprus
  • *now at: Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82230 Wessling, Germany

Abstract. The Modular Earth Submodel System (MESSy) is an open, multi-institutional project providing a strategy for developing comprehensive Earth System Models (ESMs) with highly flexible complexity. The first version of the MESSy infrastructure and process submodels, mainly focusing on atmospheric chemistry, has been successfully coupled to an atmospheric General Circulation Model (GCM) expanding it into an Atmospheric Chemistry GCM (AC-GCM) for nudged simulations and into a Chemistry Climate Model (CCM) for climate simulations.

Here, we present the second development cycle of MESSy, which comprises (1) an improved and extended infrastructure for the basemodel independent coupling of process-submodels, (2) new, highly valuable diagnostic capabilities for the evaluation with observational data and (3) an improved atmospheric chemistry setup. With the infrastructural changes, we place the headstone for further model extensions from a CCM towards a comprehensive ESM. The new diagnostic submodels will be used for regular re-evaluations of the continuously further developing model system. The updates of the chemistry setup are briefly evaluated.

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