Chemical disequilibrium is a known biosignature, and it is important to determine the conditions for its remote detection. A thermodynamical model coupled with atmospheric retrieval shows that a disequilibrium can be inferred for a Proterozoic Earth-like exoplanet in reflected light at a high O2/CH4 abundance case and signal-to-noise ratio of 50.
- Amber V. Young
- Tyler D. Robinson
- James D. Windsor
