Whitepaper #044 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: planetary ionospheres / upper atmospheres; space-based missions/projects; emerging opportunities.
We propose utilizing space-based far ultraviolet (FUV) remote sensing to explore Earth’s H and O distributions in support of cross-disciplinary, high-impact research goals. Thorough quantification of these distributions on Earth requires a dedicated, long-term, space-based FUV observational campaign.