  Ground-based synoptic solar observations provide critical contextual data
used to model the large-scale state of the heliosphere. The next decade will
see a combination of ground-based telescopes and space missions that will study
our Sun's atmosphere microscopic processes with unprecedented detail. This
white paper describes contextual observations from a ground-based network
needed to fully exploit this new knowledge of the underlying physics that leads
to the magnetic linkages between the heliosphere and the Sun. This combination
of a better understanding of small-scale processes and the appropriate global
context will enable a physics-based approach to Space Weather comparable to
Terrestrial Weather forecasting.
