Magma ocean evolution for initial H₂O of 1 TO, 5 TO, and 100 TO , respectively. All scenarios are for albedo=0. Initial CO₂ mass content is scaled relative to the H₂O content by a factor of 0, 0.3, and 1, denoted by red, green, and purple lines, respectively. Surface temperature (left) and volatile content evolution (right) are shown.H₂O, CO₂, and O₂ are denoted by solid, dashed, and dotted lines, respectively.