Improving Global Solar Magnetic Field Maps: Why Multiple Low- and High-latitude Vantage Points are Necessary

Key solar physics projects rely on complete, up-to-date full-surface maps for the photospheric magnetic field. These projects are frustrated because the maps unavoidably contain out-of-date, inaccurate information. This problem cannot be solved without full-surface observational coverage. A multi-satellite mission providing vantage points in the ecliptic plane and in polar orbits is needed.