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| Titel |
The 1-way on-line coupled atmospheric chemistry model system MECO(n) – Part 1: Description of the limited-area atmospheric chemistry model COSMO/MESSy |
| VerfasserIn |
A. Kerkweg, P. Jöckel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 5, no. 1 ; Nr. 5, no. 1 (2012-01-19), S.87-110 |
| Datensatznummer |
250002294
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| Publikation (Nr.) |
 copernicus.org/gmd-5-87-2012.pdf |
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| Zusammenfassung |
| The numerical weather prediction model of the Consortium for Small
Scale Modelling (COSMO), maintained by the German weather service
(DWD), is connected with the Modular Earth Submodel System
(MESSy). This effort is undertaken in preparation of a new,
limited-area atmospheric chemistry model. Limited-area models require
lateral boundary conditions for all prognostic variables.
Therefore the quality of a regional chemistry model is expected to
improve, if boundary conditions for the chemical constituents are
provided by the driving model in consistence with the meteorological
boundary conditions. The new developed model is as consistent
as possible, with respect to atmospheric chemistry and related
processes, with a previously developed global atmospheric chemistry
general circulation model: the ECHAM/MESSy Atmospheric Chemistry
(EMAC) model. The combined system constitutes a new research tool,
bridging the global to the meso-γ scale for atmospheric
chemistry research. MESSy provides the infrastructure and includes,
among others, the process and diagnostic submodels for atmospheric
chemistry simulations. Furthermore, MESSy is highly flexible allowing
model setups with tailor made complexity, depending on the scientific
question. Here, the connection of the MESSy infrastructure to the
COSMO model is documented and also the code changes required for
the generalisation of regular MESSy submodels. Moreover,
previously published prototype submodels
for simplified tracer studies are generalised to be plugged-in and
used in the global and the limited-area model. They are used to
evaluate the TRACER interface implementation in the new COSMO/MESSy
model system and the tracer transport characteristics,
an important prerequisite for future atmospheric
chemistry applications. A supplementary document with further details
on the technical implementation of the MESSy interface into COSMO with
a complete list of modifications to the COSMO code is provided. |
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