A Question About Contrails

Sat Oct 14, 2000 11:02 am

I have noticed for several years, that is seems contrails appear more over St. Louis (my home), much more in the fall than in the spring or summer. Why would this be? Different weather patterns, or different flight directions? I would hardly see any in the spring or summer, but now there are contrails everywhere!

Posts: 1962
Joined: Tue May 18, 1999 8:32 am

RE: A Question About Contrails

Sat Oct 14, 2000 12:12 pm

Well, one of the factors that determine size of contrails is the moisture content of the air up there. More moisture will allow for a larger contrail. Why there would be more moisture in the fall than in the spring, over St. Louis, I don't know.

An optimist robs himself of the joy of being pleasantly surprised
Posts: 553
Joined: Thu Aug 31, 2000 9:11 pm

RE: A Question About Contrails

Sat Oct 14, 2000 7:43 pm

Here in Ibiza (Spain) we have very few contrails in the summer time, but in the winter we have a lot.
I agree with Hmmmm... that moisture is the most important factor, another one might be temperature.

RE: A Question About Contrails

Sat Oct 14, 2000 9:53 pm

Of course, it could all be a secret conspiracy as these people would have us believe.... - what a bunch of loonies!     
Posts: 507
Joined: Mon Feb 21, 2000 7:11 am

RE: A Question About Contrails

Sun Oct 15, 2000 5:09 am

Wow.....This Clifford E. Carnicom guy really should get out more.
What is he on ???
Bunch of Loonies ?.......Gross understatement.

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