The atmospheres of rocky exoplanets - II. Influence of surface composition on the diversity of cloud condensates

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Table A.1

Comparison of Earth atmospheric data (Muralikrishna & Manickam 2017) with a GGCHEM phase-equilibrium model at p = 1.013 bar and T = 288.15 K based on total element abundances adjusted to fit the data, see text.

	N₂	O₂	H₂O	Ar	CO₂	Ne	He	CH₄	H₂	SO₂	HNO₃
observed (c_i)	77%	20.5%	10 ppm − 5%	0.93%	400 ppm	18 ppm	5.2 ppm	1.8 ppm	550 ppb	75 ppb	?
GGchem model	77%	20.5%	1.7%	0.93%	400 ppm	18 ppm	5.2 ppm	≪	≪	≪	2 ppb

The measured concentrations of H₂O depend on latitude, height, and weather conditions. The value of 1.7% corresponds to saturated liquid water (100% humidity) at 288.15 K in the model. Molecules marked with ’ ≪’ and all other molecules not listed have concentrations < 10⁻¹⁰ in the model.

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