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Thank you, George. My understanding was that part of those "changes" was
also the fact that the land and water heat and cool very differently with
solar radiation, so that the air masses above them also heated and cooled
VERY differently, i.e. which is why hang gliders find thermals often based
what is under them, i.e. water, land, bright areas, dark ones.

If variations in the temperature of the air mass over the water are
important, how can it not matter that the air masses "here" and "there" are
going to be at very different temperatures, i.e. from one being over the
land and the other over the water, where air temperatures will be radically
different?

To what altitude are these changes in air temperature problematic?

   

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