The science teams of GOLD, ICON, and COSMIC, in conjunction with ground-based observers, will hold a workshop entitled Geospace discovery science in a new decade (GDS workshop) on 8–10 February 2021. Each day will comprise two separate sessions, each of which will last two hours, for a total of twelve hours of content. This is a follow-up to a meeting from 2016, and the summary text is below.
Three new space missions, COSMIC-2, GOLD and ICON, provide remarkable avenues for new investigations of the geospace system, in collaboration with a growing network of ground-based observatories and their associated research teams. With a broad slate of new capabilities, the geospace research community is presented with unprecedented opportunities for new research and a revitalised capacity for solving significant outstanding problems in near-Earth space weather. The two NASA missions, ICON and GOLD, observe the thermosphere and ionosphere using optical and in-situ instruments. The international COSMIC-2 mission comprises a constellation of six satellites that map the ionosphere using GPS radio occultation, in-situ measurements, and beacon signals for space to ground measurements. Enhanced ground-based observatories, cubesats, and other satellite constellations, also provide essential new measurements. Combining these tools to effectively address questions in ion-neutral coupling and upper-atmosphere dynamics requires a comprehensive scientific strategy for broad community participation. Therefore we are holding an online workshop from the 8-10 February 2021. This workshop will discuss the space-based missions, and complementary ground-based observations, modelling, and data synthesis.