Tatooine clouds

There has to be a large body of water somewhere on Tatooine.

There are clouds above the Dune Sea when R2-D2 and C-3PO are wondering
around on it.

The moisture that the moisture vaporators condenses from the air has
to come from somewhere.

Large creatures like Banthas and Krayt Dragons must drink.

Where is this large body of water?

 

Well, it is the Dune Sea.

But honestly, I don't know. Maybe there is an underground body of water where the moisture vaporators draw their water from?

 

Yes. Perhaps.



Maybe there is volcanic activity that produces hot springs and geysers like in Yellowstone and the clouds form from steam and geysers issuing forth. The water wouldn't necessarily have to be exposed to direct sunlight after all for it to turn into vapor. Then, of course, the rock underneath the soil in these place would have to be porous to allow water falling back to Tatooine to go underground and back into the hot springs, to vaporize into more clouds, etc., and so forth.

I think we just might be onto something here.



I think it's time someone update Wookieepedia.

 

Without resorting to Arakis / Tatooine parallels:
http://boards.theforce.net/The_Star_Wars_Saga/b10456/12073632/p1

here's something testable about clouds on a dry planet:
http://www.solarviews.com/eng/marscld.htm

Mars has plenty of water beneath the surface.