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| Titel |
First description of the Minnesota Earth System Model for Ocean biogeochemistry (MESMO 1.0) |
| VerfasserIn |
K. Matsumoto, K. S. Tokos, A. R. Price, S. J. Cox |
| 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 ; 1, no. 1 ; Nr. 1, no. 1 (2008-08-04), S.1-15 |
| Datensatznummer |
250000110
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| Publikation (Nr.) |
 copernicus.org/gmd-1-1-2008.pdf |
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| Zusammenfassung |
| Here we describe the first version of the Minnesota Earth System Model for
Ocean biogeochemistry (MESMO 1.0), an intermediate complexity model based on
the Grid ENabled Integrated Earth system model (GENIE-1). As with GENIE-1,
MESMO has a 3D dynamical ocean, energy-moisture balance atmosphere, dynamic
and thermodynamic sea ice, and marine biogeochemistry. Main development
goals of MESMO were to: (1) bring oceanic uptake of anthropogenic transient
tracers within data constraints; (2) increase vertical resolution in the
upper ocean to better represent near-surface biogeochemical processes; (3)
calibrate the deep ocean ventilation with observed abundance of radiocarbon.
We achieved all these goals through a combination of objective model
optimization and subjective targeted tuning. An important new feature in
MESMO that dramatically improved the uptake of CFC-11 and anthropogenic
carbon is the depth dependent vertical diffusivity in the ocean, which is
spatially uniform in GENIE-1. In MESMO, biological production occurs in the
top two layers above the compensation depth of 100 m and is modified by
additional parameters, for example, diagnosed mixed layer depth. In
contrast, production in GENIE-1 occurs in a single layer with thickness of
175 m. These improvements make MESMO a well-calibrated model of intermediate
complexity suitable for investigations of the global marine carbon cycle
requiring long integration time. |
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