2 upvotes, 1 direct replies (showing 1)
View submission: Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
As the surface of land absorbs sunlight it gets hotter. The heat "rising" is simply the surrounding air which gets heated around the sunlit surface, which dissipates the further it moves from the heated surface. The air above the canyon is simply cooler as it is as removed from the hot surface as possible.
Comment by Francois_the_Droll at 26/04/2023 at 23:35 UTC
1 upvotes, 0 direct replies
The air at the top of the canyon is just as close to the land as the bottom though.