Whitepaper #015 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: other programmatic; user-need-driven basic space weather research; space-based […]
Small and mid-scale phenomena in Earth’s thermosphere and E-region are severely under-sampled. Satellite observations are horizontally smeared and ground-based observations are insufficient. The solution: a modernization of the falling spheres technique to probe in situ the neutral and electrodynamics between 80 and 200 km.