  Long-term synoptic observations of the Sun are critical for advancing our
understanding of Sun as an astrophysical object, understanding the solar
irradiance and its role in solar-terrestrial climate, for developing predictive
capabilities of solar eruptive phenomena and their impact on our home planet,
and heliosphere in general, and as a data provider for the operational space
weather forecast. We advocate for the development of a ground-based network of
instruments provisionally called ngGONG to maintain critical observing
capabilities for synoptic research in solar physics and for the operational
space weather forecast.
