posted on Nov, 13 2004 @ 05:11 PM
My colleague Mr. Yaak makes some interesting observations regarding a reason for the increase in persistent contrails: increased pollution.
I don't have the data to make any comments one way or the other, so I certainly won't waste anyone's time in arguing yea or nay. However, I do
know one thing that causes water clouds to form is the presence of a "seed" of particulate matter around which the moisture can dondense. I am not
sure of the phsics of formation of cirrus ice clouds (or persistent trails, which are pretty much the same thing), but I have noticed that large
forest fires, which certainly produce a bunch of airborne particulates, seem to morph into large clouds which cometimes rain. For this reason, I'm
inclined to go along with Yaak.
But an additional reason for more persistent contrails would be that as the turboptop commuters are retired and replaced with Bombardier and EMBRAER
small jets, you will have more airplanes flying at the 9 to 12 000 meter altitudes where the temperature and hunmidity leads to persistent
My guess is that the increased reporting of persistent contrails probably stems from both reasons.
By the way, Mr. Yaak, I have tried to contact Mr. Big on several occasions and he has not returned my calls. If you see him, have him contact me at
the office: firstname.lastname@example.org/debunkatorium/langley/subbasement. Thanks.