Sun and Wind
Name: Richard G.
What effect does the sun have on wind direction on hills,
mountain tops and passes.
The solar influence on wind direction applies only in situations such
as land-sea interfaces, where a sea-breeze or land-breeze
becomes established due to daytime heating, and nighttime cooling. Air
drainage does occur in hilly and mountainous areas at
night when the air near the ground cools and flows downhill into the
valleys. But atmospheric pressure patterns have a much
greater effect on wind direction than any solar influences has.
Wendell Bechtold, Meteorologist
Forecaster, National Weather Service
Weather Forecast Office, St. Louis, MO
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Update: June 2012