Accueil > Séminaires d’Astrophysique > Modeling Earth’s Magnetosphere for Science and Space Weather

 

Modeling Earth’s Magnetosphere for Science and Space Weather

Jimmy Raeder (Space Science Center, University of New Hampshire, Durham, NH, USA) — au CESR

Par Francois RINCON - 19/04/2010

 

Séminaires d’Astrophysique

de l’Observatoire Midi-Pyrénées


Séminaire de

Jimmy Raeder

(Space Science Center, University of New Hampshire, Durham, NH, USA)

Jeudi 6 Mai 2010 à 11h

CESR


Modeling Earth’s Magnetosphere for Science and Space Weather

Earth’s magnetosphere arises from the interaction of the solar wind and interplanetary magnetic field with the internal magnetic field of the Earth. Because the solar wind is highly variable the magnetosphere is very dynamic and host to numerous plasma processes. Since the magnetosphere is fairly accessible for in situ measurements it also serves as a laboratory for the collisionless plasma that makes up most of the cosmos. Attempts to model the global solar wind - magnetosphere interaction go back to the 1980’s and are usually based on the MHD equations. Contemporary models are much more complex and are coupled to other sub-models, such as ionosphere-thermosphere and ring current models. Furthermore, ever increasing computer power now allows us to produce many details and processes of the interaction. In this talk I shall present the Open Geospace General Circulation Model (OpenGGCM), and in particular recent developments such as the inclusion of ring current models and the porting of the code to IBM/Cell-BE (Playstation 3) hardware. Furthermore, I will discuss resent studies of Flux Transfer Events, plasma entry, and magnetospheric substorms, using the model and data comparisons. Finally, I will discuss the possible utilization of the model in the applied branch of space science, Space Weather Forecasting.

 

 

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Laboratoire Astrophysique de Toulouse - Tarbes (UMR5572)

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