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| Titel |
The CSIRO Mk3L climate system model version 1.0 – Part 1: Description and evaluation |
| VerfasserIn |
S. J. Phipps, L. D. Rotstayn, H. B. Gordon, J. L. Roberts, A. C. Hirst, W. F. Budd |
| 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 ; 4, no. 2 ; Nr. 4, no. 2 (2011-06-17), S.483-509 |
| Datensatznummer |
250001664
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| Publikation (Nr.) |
 copernicus.org/gmd-4-483-2011.pdf |
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| Zusammenfassung |
The CSIRO Mk3L climate system model is a coupled general
circulation model, designed primarily for millennial-scale
climate simulations and palaeoclimate research. Mk3L includes
components which describe the atmosphere, ocean, sea ice and
land surface, and combines computational efficiency with
a stable and realistic control climatology. This paper describes
the model physics and software, analyses the control
climatology, and evaluates the ability of the model to simulate
the modern climate.
Mk3L incorporates a spectral atmospheric general circulation
model, a z-coordinate ocean general circulation model,
a dynamic-thermodynamic sea ice model and a land surface scheme
with static vegetation. The source code is highly portable, and
has no dependence upon proprietary software. The model
distribution is freely available to the research
community. A 1000-yr climate simulation can be completed in
around one-and-a-half months on a typical desktop computer, with
greater throughput being possible on high-performance computing
facilities.
Mk3L produces realistic simulations of the larger-scale features
of the modern climate, although with some biases on the regional
scale. The model also produces reasonable representations of the
leading modes of internal climate variability in both the
tropics and extratropics. The control state of the model
exhibits a high degree of stability, with only a weak cooling
trend on millennial timescales. Ongoing development work aims to
improve the model climatology and transform Mk3L into
a comprehensive earth system model. |
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