- #1
GilSE
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- TL;DR Summary
- From one hand - hotter air is "lighter", from another - hotter air does a higher pressure
If the surface is heated, air above it will also heat, its temperature will rise. It will cause two processes: while temperature of gas rise, its pressure will also increase, but, also, as the air molecules get more energy, they will go higher from the earh surface, concentartion of the molecules near the surface will decrease, hence, the air pressure should decrease, too ([itex]p=nkT[/itex], [itex]n[/itex] is number density). So, which of these factors will prevail?