Miata Mailing List: October 1994, Message #109
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   From: "Michael Simmons" 
Subject: Re: monoxide levels in the winter
   Date: Thu, 6 Oct 1994 19:03:42 -0400

Piet Ruyssinck drew some great graphs showing the temperature/height
relationships in the atmosphere.  He notes that inversions occur in the
winter and that they trap pollutants closer to the ground.

Here in Southern California inversions are what trap our ozone in the
basin and cause us problems, but they occur any time of the year, but
mostly in the summer, not winter.  If you're in the mountains or a
plane in the summer you can usually see brown air below with a very
distinct line at the top, above which it is crystal clear.  The
stronger solar heating and more stable air in the summer here cause the
problem.

Well, since neither one of us is a meteorologist, I'm going to have to
ask one (or someone else who would know).  I'll post the answer.

Mike