Mixng ratios and cooling contributions of Kompot models. Top row: mixing ratios of several neutral species (indicated by solid lines) and ionised species (indicated by dotted lines) in the simulated domain. Bottom row: contributions of different cooling mechanisms at different altitudes. Each column corresponds to a different levels of irradiation, namely 1, 6, and 8 F_EUV,⊕. All models presented in this figure are of a 1 M_⊕ planet with an atmosphere composed of 1% N₂-99% CO₂.