Whitepaper #213 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: ground-based missions/projects; solar physics; space-based missions/projects; emerging opportunities.
Identification of the mechanisms responsible for heating the solar atmosphere remains an outstanding problem. There has been tremendous progress in the past decade. Despite this progress, gaps remain. With dynamic broadband imaging spectropolarimetry, radio observations enable key diagnostics of the solar atmosphere. We briefly discuss the need for radio coverage and discuss the requirements.