 |
| Titel |
A general Cluster data and global MHD simulation comparison |
| VerfasserIn |
P. Daum, M. H. Denton, J. A. Wild, M. G. G. T. Taylor, J. Safrankova, M. Hayosh |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 26, no. 11 ; Nr. 26, no. 11 (2008-11-04), S.3411-3428 |
| Datensatznummer |
250016281
|
| Publikation (Nr.) |
 copernicus.org/angeo-26-3411-2008.pdf |
|
|
|
|
|
| Zusammenfassung |
| Among the many challenges facing the space weather modelling community today,
is the need for validation and verification methods of the numerical models
available describing the complex nonlinear Sun-Earth system.
Magnetohydrodynamic (MHD) models represent the latest numerical models of
this environment and have the unique ability to span the enormous distances
present in the magnetosphere, from several hundred kilometres to several
thousand kilometres above the Earth's surface. This makes it especially
difficult to develop verification and validation methods which posses the
same range spans as the models. In this paper we present a first general
large-scale comparison between four years (2001–2004) worth of in situ
Cluster plasma observations and the corresponding simulated predictions from
the coupled Block-Adaptive-Tree-Solarwind-Roe-Upwind-Scheme (BATS-R-US) MHD
code. The comparison between the in situ measurements and the model
predictions reveals that by systematically constraining the MHD model inflow
boundary conditions a good correlation between the in situ observations and
the modeled data can be found. These results have an implication for
modelling studies addressing also smaller scale features of the
magnetosphere. The global MHD simulation can therefore be used to place
localised satellite and/or ground-based observations into a global context
and fill the gaps left by measurements. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|