Martian Atmosphere found to be Supersaturated with Water

The ESA probe Mars Express which has been orbiting Mars for several years now has measured the water content of the Martian atmosphere by way of its SPICAM spectrometer. It found that the water concentration is above the saturation point in a state called super-saturation. This is the first time this type of measurement has been made on a global scale. The results will help improve our understanding of Mar’s weather.

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. This further suggests that this event happened relatively recently since the water has not entirely bled off.



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