reply to post by vasaga
Sorry, vasaga.
You're being duped by a moron with a vid camera, posting on YT.
It is very obvious, at the time indices you refer, that the existing contrail, and the second airplane, are
at different altitudes!!!
See, as in the example of the two airplanes earlier, crossing paths, they are separated by 1000 feet vertically. The airmass they are in is saturated
with water vapor sufficiently, and for several thousand feet vertically, obviously, for really good contrails to form.
Sometimes, though, an airplane 1000 feet above, or below another
will not produce a contrail. You cannot see water vapor, hence these nutcases and their "chemtrail" conspiracy theories.
AND now, a short entertaining educational video:
I strongly recommend the OzWeatherman threads and his info, it is dead brilliant!
Contrails tend to resemble normal cirrus clouds because they are formed at the same altitudes as cirrus. In fact, whilst cirrus can form naturally,
the contrail left behind by a jet simply moves the process along.
Now, if you don't believe that a contrail can 'linger' and become a cloud, then you obviously don't believe that clouds exist!! Because, I do.
AND, I happen to see clouds 'linger' almost every day. Does this make me delusional?
Let me use a personal example. As I write it is 0854 Sunday, where I am. I was up and about at 0620. Sun was up, sky was
completely clear.
NOT a cloud within view. Now, in just those two hours or so, it is completely overcast, with fracto-cumulous, and very light scattered showers.
This is called
normal weather!!! It is the nature of meteorology. It changes. We've all seen clouds form, and stay for hours, yes?
Because, clouds move with the wind...and the velocity of the atmosphere is always varying, and variable. AND different at different altitudes.
How do I know this? Because I've been a pilot for over three decades.
AND, I don't come 'out of the woodwork' here just to be a so-called "debunker"! I come to deny ignorance. You can't "debunk" something that
isn't true in the first place! You can, however, spread knowledge.
And, just for a laugh (because it's always fun to laugh in the same spirit as "America's Funniest Home Videos" and their genre:
(I blame the Public School system for leading the USA into Idiocracy!)
[edit on 6/21/0909 by weedwhacker]