River
Volcanism?
H2O/NH3
Lake
Organic sediments
Impacts
Melt
Plume
Condensate haze
Temperature
Tholin haze
H2O/NH3
CH4–N2 clouds
Pressure, bar
Altitude, km
Temperature, K
0.003
0.01
0.03
0.1
0.3
1.0
1.5
0
20
40
60
80
100
120
140
80
100
120
140
160
180
C2H6Fog