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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:25 |
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Conference: Bucharest University Faculty of Physics 2001 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Simulated South-Eastern European Climate with the French Model Arpege-climat
Authors:
Liana Cazacioc(1), Michel Déqué(2)
Affiliation:
(1)National Institute of Meteorology and Hydrology, Bucharest, Romania
(2)Centre National de Recherches Météorologiques, Toulouse, France
E-mail
Keywords:
Abstract:
General Circulation Models are the most promising way to anticipate anthropogenic climate changes. The global warming they agree, as a response to an increase in the greenhouse effect, has an important hydrologic and thermal impact.
In this paper, various simulations with the global spectral French model ARPEGE-climat are presented. We examine the simulated south-eastern European climate by the version with homogeneous versus varying horizontal resolution.
Two versions of the model have been used to simulate the regionalization of climate impacts.
The first one uses a homogeneous horizontal resolution with a T42 truncation, which corresponds to the standard version of the model. This model has been integrated 15 years from 1979 through 1993. Such a model has a grid size of about 2.8°, which is insufficient to take into account the regional characteristics of the European orography.
The second version of the model is the stretched one. This version has its pole located in the Tyrrhenian Sea, the truncation is T106 and the stretching factor is 3.5. The grid size varies from 50 km at the pole of stretching, to 500 km at the antipodes. This model has been integrated 17 years from 1979 through 1995.
We have also verified how the model simulates the temperature at 2 m and the precipitation rate over the south-eastern Europe region in order to evaluate the possibility of use the general circulation model to the regional distribution of the climatic features.
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