In article ,
Jens Kieffer-Olsen wrote:
The researchers have brought on-line a large planetary
environmental chamber in which temperature, pressure,
atmosphere, sunlight and soil conditions can be reproduced.

I take it that gravity on Mars being a mere 38% of that in the
experiment has little bearing on the evaporation rate?

Very little. And as a practical matter, it's virtually impossible to
reproduce that anyway...
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MOST launched 1015 EDT 30 June, separated 1046, | Henry Spencer
first ground-station pass 1651, all nominal! |