Merging of coronal and heliospheric numerical two-dimensional MHD models

Details Merging of coronal and heliospheric numerical two-dimensional MHD models Merging of coronal and heliospheric numerical two-dimensional MHD models

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1493o&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A12, pp. SSH 14-1, CiteID 1493, DOI 10.1029/2002JA009334

Astronomy and Astrophysics

Astrophysics

29

Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections, Interplanetary Physics: Interplanetary Shocks, Mathematical Geophysics: Numerical Solutions, Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds

Scientific paper

Space weather research requires investigation of a complex chain of coupled dynamic phenomena occurring simultaneously on various spatial and temporal scales between the Sun and Earth. Specialized physically based numerical models have been developed to address particular aspects of the entire system. However, an integrated modeling approach is necessary to provide a complete picture suitable for interpretation of various remote and in situ observations and for development of forecasting capabilities. In this paper we demonstrate merging of coronal and heliospheric MHD models for a two-dimensional hypothetical case involving a magnetic cloud, shock, streamer belt, and current sheet. The disruption of a sheared helmet streamer launches a coronal mass ejection (CME) (simulated by the coronal model), which evolves during its propagation through interplanetary space (simulated by the heliospheric model). These models employ different physical approximations and numerical grids to simulate physical phenomena over their respective spatial and temporal domains. The merging of the models enables accurate tracking of a CME from its origin in the solar atmosphere to its arrival at Earth.

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