reply to post by Drew99GT
THAT video shows two airliners, at different altitudes. Therefore, the conditions for contrail formation were different. The one at the lower
altitude was in air with a higher relative humidity, and therefore a longer-lasting (persistent) contrail.
It really is that simple.
Now, judging altitude, merely by observation, is not an exact science....but based on what I observed (two flights, apparently on same Airway, or at
least approximately parallel courses) and their proximity to each other.
They cannot be so close together, IF at the same altitude. Minimum horizontal separation at those high (cruising) altitudes is 20 NM. Plus, my
experience tells me that the one leading is the one at a higher altitude, just by eyeballing the two.
Have you ever heard of the website "FlightAware"?
Don't know whether that's your YT video, and you're in the COS area or not. But, here's a link directly to the website, and it shows live activity,
flights on IFR flight plans, in the COS area. (You can change the setting, just type in another airport):
flightaware.com...
That was the link to the site overall, with extra info....(info worth checking out, if you want to learn more things)...here is the
BIGGIE map direct link (which you can access, of course, from the first
one too).
When you look at the flight tracker, the airplane icons in green are the ones to focus on, since they are cruising by, and not departing/arriving at
the airport you have the map centered on. THEY make the contrails (but only when conditions are right, for contrails to form).
Rollover with your mouse, on icons, to see the flight number, airplane type, altitude, groundspeed and city pair.
You can try to then identfy the actual airplanes, when you see them outside, by referencing the tracker website.
Oh, and BTW?? IF "chemtrails" were real (they aren't), but IF....why on Earth would they be "spraying" over Colorado Springs, of all places??
The United States Air Force Academy is located there, you know.......
edit on 11 November 2010 by weedwhacker because: (no reason given)