re: Get Real, Robert
I don't know the precise location of where those low water vapor measurements were made.
However, I do know Don Juan Pond is located in the Dry Valleys of Antarctica which generally have been likened to Mars in their extreme aridity.
WELCOME TO THE DRY VALLEYS,
ANTARCTICA.
Don Juan Pond
http://huey.colorado.edu/77DegreesSouth/spooky4.html
If Don Juan is the only liquid at the surface for miles around, this region of the Dry Valleys may very well have similar low water vapor values.
- Bob
