Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

FP5

TOPOZ-III Résumé de rapport

Project ID: EVK2-CT-2001-00102
Financé au titre de: FP5-EESD
Pays: Germany

The simulation of the southern hemisphere sudden stratospheric warming in Sep/Oct 2002 and the Arctic winter 2002/03

The southern Hemisphere Vortex Split in Sep/Oct 2002

The simulation of southern hemisphere vortex split period by the partners running CTMs reveal that the split of the vortex is reproduced in all models as a result of the well described short-term dynamics in the ECMWF analyses.

The four different CTMs (CLaMS, KASIMA, REPROBUS, SLIMCAT) show in general a similar distribution of long-lived tracers like CH4 but there are some remarkable differences. In the pressure-level models (KASIMA and REPROBUS) the upward transport of CH4 in the tropics seems to be stronger than in the models which uses the potential temperature as vertical co-ordinate (CLaMS and SLIMCAT). Together with the strongest vertical upward transport in the tropics the KASIMA model shows the strongest descent in the Antarctic polar vortex whereas CLaMS exhibits the weakest descent.

For more details please refer to:
http://www-imk.fzk.de/imk2/kasima/aktuelles/topoz-iii/deliverables/d2_2/"; target="_blank" Deliverable report D2.2

The simulation of Arctic winter 2002/2003:
The simulation of Arctic winter 2002/2003 by the partners running CTMs reveal that the vortex build up and break up is reproduced in all models as a result of the well described short-term dynamics in the ECMWF analyses.

For more details please refer to the
http://www-imk.fzk.de/imk2/kasima/aktuelles/topoz-iii/deliverables/d2_3/"; target="_blank" Deliverable report D2.3

Informations connexes

Reported by

Forschungszentrum Karlsruhe
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Germany
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