- Conference date: 17-31 June 2002
- Location: Pisa (Italy)
Constraints on coronal plasma parameters derived from remote and in situ observations are reviewed. The coronal observations include measurements of polarized white light and the widths and intensities of spectral lines. Emphasis is placed on electron temperatures derived from these measurements. In situ observations include mass flux, velocity and ion composition. Some of these observational results are in contradiction to each other. It is discussed how these contradictions could be overcome and what it means for the physical properties of the coronal plasma. The observations will are placed in context with different theoretical models of ion formation and solar wind expansion. Emphasis is placed on the fast solar wind originating in the polar coronal holes.
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