Whitepaper #385 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: solar physics.
Data driven simulations and supporting infrastructure must be advanced such that community members can easily use time dependent dynamic models on a regular basis as a tool to interpret observations and test physical theories for the region between the photosphere and Alfvén surface. This requires tight integration between simulation development, forward modeling, and multi-facility observations.