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| Titel |
An Intermediate Complexity Climate Model (ICCMp1) based on the GFDL flexible modelling system |
| VerfasserIn |
R. Farneti, G. K. Vallis |
| 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 ; 2, no. 2 ; Nr. 2, no. 2 (2009-07-21), S.73-88 |
| Datensatznummer |
250000537
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| Publikation (Nr.) |
 copernicus.org/gmd-2-73-2009.pdf |
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| Zusammenfassung |
| An intermediate complexity coupled ocean-atmosphere-land-ice model, based on
the Geophysical Fluid Dynamics Laboratory (GFDL) Flexible Modelling System
(FMS), has been developed to study mechanisms of ocean-atmosphere
interactions and natural climate variability at interannual to interdecadal
and longer time scales. The model uses the three-dimensional primitive
equations for both ocean and atmosphere but is simplified from a "state of
the art" coupled model by using simplified atmospheric physics and
parameterisation schemes. These simplifications provide considerable savings
in computational expense and, perhaps more importantly, allow mechanisms to
be investigated more cleanly and thoroughly than with a more elaborate model.
For example, the model allows integrations of several millennia as well as
broad parameter studies. For the ocean, the model uses the free surface
primitive equations Modular Ocean Model (MOM) and the GFDL/FMS sea-ice model
(SIS) is coupled to the oceanic grid. The atmospheric component consists of
the FMS B-grid moist primitive equations atmospheric dynamical core with
highly simplified physical parameterisations. A simple bucket model is
implemented for our idealised land following the GFDL/FMS Land model. The
model is supported within the standard MOM releases as one of its many test
cases and the source code is thus freely available. Here we describe the
model components and present a climatology of coupled simulations achieved
with two different geometrical configurations. Throughout the paper, we give
a flavour of the potential for this model to be a powerful tool for the
climate modelling community by mentioning a wide range of studies that are
currently being explored. |
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