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| Titel |
Description of the Earth system model of intermediate complexity LOVECLIM version 1.2 |
| VerfasserIn |
H. Goosse, V. Brovkin, T. Fichefet, R. Haarsma, P. Huybrechts, J. Jongma, A. Mouchet, F. Selten, P.-Y. Barriat, J.-M. Campin, E. Deleersnijder, E. Driesschaert, H. Goelzer, I. Janssens, M.-F. Loutre, M. A. Morales Maqueda, T. Opsteegh, P.-P. Mathieu, G. Munhoven, E. J. Pettersson, H. Renssen, D. M. Roche, M. Schaeffer, B. Tartinville, A. Timmermann, S. L. Weber |
| 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 ; 3, no. 2 ; Nr. 3, no. 2 (2010-11-02), S.603-633 |
| Datensatznummer |
250000958
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| Publikation (Nr.) |
 copernicus.org/gmd-3-603-2010.pdf |
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| Zusammenfassung |
| The main characteristics of the new version 1.2 of the three-dimensional
Earth system model of intermediate complexity LOVECLIM are briefly described.
LOVECLIM 1.2 includes representations of the atmosphere, the ocean and sea
ice, the land surface (including vegetation), the ice sheets, the icebergs
and the carbon cycle. The atmospheric component is ECBilt2, a T21,
3-level quasi-geostrophic model. The ocean component is CLIO3, which
consists of an ocean general circulation model coupled to a comprehensive
thermodynamic-dynamic sea-ice model. Its horizontal resolution is of
3° by 3°, and there are 20 levels in the ocean. ECBilt-CLIO is
coupled to VECODE, a vegetation model that simulates the dynamics of two main
terrestrial plant functional types, trees and grasses, as well as desert.
VECODE also simulates the evolution of the carbon cycle over land while the
ocean carbon cycle is represented by LOCH, a comprehensive model that takes
into account both the solubility and biological pumps. The ice sheet
component AGISM is made up of a three-dimensional thermomechanical model of
the ice sheet flow, a visco-elastic bedrock model and a model of the mass
balance at the ice-atmosphere and ice-ocean interfaces. For both the
Greenland and Antarctic ice sheets, calculations are made on a 10 km by
10 km resolution grid with 31 sigma levels. LOVECLIM1.2 reproduces well the
major characteristics of the observed climate both for present-day conditions
and for key past periods such as the last millennium, the mid-Holocene and
the Last Glacial Maximum. However, despite some improvements compared to
earlier versions, some biases are still present in the model. The most
serious ones are mainly located at low latitudes with an overestimation of
the temperature there, a too symmetric distribution of precipitation between
the two hemispheres, and an overestimation of precipitation and vegetation
cover in the subtropics. In addition, the atmospheric circulation is too
weak. The model also tends to underestimate the surface temperature changes
(mainly at low latitudes) and to overestimate the ocean heat uptake observed
over the last decades. |
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