MDI Synoptic Charts of Magnetic Field: Interpolation of Polar Fields

Details MDI Synoptic Charts of Magnetic Field: Interpolation of Polar Fields MDI Synoptic Charts of Magnetic Field: Interpolation of Polar Fields

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.2405l&link_type=abstract

American Astronomical Society Meeting 210, #24.05; Bulletin of the American Astronomical Society, Vol. 39, p.129

Astronomy and Astrophysics

Astronomy

Scientific paper

In this poster, we compare various methods for interpolation of polar field for the MDI synoptic charts of magnetic field. By examining the coronal and heliospheric magnetic field computed from the synoptic charts based on a Potential Field Source Surface model (PFSS), and by comparing the heliospheric current sheets and footpoints of open fields with the observations, we conclude that the coronal and heliospheric fields calculated from the synoptic charts are sensitive to the polar field interpolation, and a time-dependent interpolation method using the observed polar fields is the best among the seven methods investigated.

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