Martian Atmosphere found to be Supersaturated with Water
This finding is consistent with catastrophic Martian geology. If the pressure Mars' atmosphere had temporarily been raised to allow surface water by dust from impacts and volcanic activity, when
Martian atmospheric pressure dropped as this dust settled the resulting evaporation would supersaturated atmosphere. This state would continue because the low pressure makes rain impossible such that the only way to reduce it is for the water to slowly bleed off into space.