Quote:
Originally Posted by Dfrank
Van,
No the physics are not different, it is the numbers.
Water temperature, -20c, -10c, -5c, 1c. Ground temperature -20c, -10c, 5c. How far does the solar heat penetrate the surface material? Could it always be -10c just a centimeter below the surface even during max heating? What would be the heat transfer rate? Would the cold ground render the solar heating moot?
It is just a lot of stuff we do not know. A lot more than ambient air temp for sure.
Dfrank
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You have atmosphere temperature and pressure, you have solar insolation. You can, with great confidence, conclude that liquid surface water would not be stable for an extended period of time.