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| Paper: |
Numerical Study of the Global Corona for CR 2055 Driven by Daily Updated Synoptic Magnetic Field |
| Volume: |
459, 6th International Conference of Numerical Modeling of Space Plasma Flows (ASTRONUM 2011) |
| Page: |
202 |
| Authors: |
Feng, X.; Yang, L. P.; Xiang, C. Q.; Liu, Y.; Zhao, X.; Wu, S. T. |
| Abstract: |
In this paper, a preliminary study of the global corona for
Carrington rotation (CR) 2055 is carried out by the 3D
Solar-Interplanetary (SIP) adaptive mesh refinement (AMR) space-time
conservation element and solution element (CESE) MHD model
(SIP-AMR-CESE MHD model) (Feng et al. 2011a), which is driven by
the daily-updated magnetic field synoptic data. To incorporate the
observations into the model, the lower boundary conditions are
specified according to the flux evolution of the observed magnetic
field and the normal projected characteristic method. The simulated
results are compared with solar observations and in-situ solar wind
measurements, which are mapped from both Ulysses and other
near-Earth spacecraft to the computation domain. Comparisons show
that the MHD results have good overall agreement with coronal and
interplanetary structures, including the size and distribution of
coronal holes and the transition of the solar wind speeds and
magnetic field polarities. The MHD results are also compared with
the Potential Field Source Surface (PFSS) and Wang-Sheeley-Arge
(WSA) methods. |
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