Coexistence of CH4, CO2 and H2O in exoplanet atmospheres

P.W. and Ch.H. acknowledge funding from the European Union H2020-MSCA-ITN-2019 under Grant Agreement no. 860470 (CHAMELEON). O.H. acknowledges the PhD stipend form the University of St Andrews’ Centre for Exoplanet Science. P.B. acknowledges support from the St Leonards interdisciplinary scholarship.