Re: Hellas Basin on Mars: Water, Liquid CO2, or both?
REB,
If your read the list of Authors for that second article, you'll find Yours Truly...
So of course, I agree entirely with their findings. ;-]
One thing to bear in mind is that the warmest places of Mars will be like the warmest places on Earth - the deserts!
The heat tends to drive water out of these areas in the vapour phase, and you need a way of getting water back again.
Without this, Hellas will be Mars' Sahara, or even the Taklimakan, where even camels don't go...