They just look like persistent contrails to me.

In one case, you see a broken contrail, as it passed theough an area of the atmosphere where the temperature and/or RH was outside the envelope for formation of persistent contrails, which -- in that location, at least -- simply sublimed from ice crystals to water vapor.

I mean, a contrail will persist if the ambient temperature at the place where the contrail is formed is below minus forty degrees and the relative humidity is saturated.

If the temperature is ABOVE minus forty degrees or the relative humidity is BELOW 100 percent, then the contrail (which is just ice crystals) will sublime back to vapor like dry ice does and the contrail will disappear within a minute or so.

What's so mysterious about that? Haven't you studied anything about meteorology at all?

Yep...nothing but normal contrails in those pics.

I still don't understand all these people that think planes are spraying chemicals in the sky making these trails. A little research on the mechanics of contrails would debunk the whole chemtrail thoughts once and for all.

oops. duplicate post

[edit on 10-2-2005 by sensfan]

In particular, note how the persistent contrails form in the area where there are pre-existing cirrus clouds. that should tell you something about the RH in that area.

You'd be able to do a better job if you invested in a fisheye lens.

The ones on the right are particularly fishy. Definitely not regular contrails. Too wide and spready compared to the other trails.


What am i talking about its perfectly normal for jet contrails to be three times as wide as any plane right?

[edit on 27-2-2005 by joepits]

Um, yes it is, if the atmospheric conditions are right and the contrails are spread out by upper atmospheric winds.

Yes they do. If conditions are right contrails will fill out to cover the whole sky.

Joepits, have you even taken a physics or a meteorology course?

im only a 2nd year in college but i took engineering chem I and II and engineering physics I and II. B's in all.

Originally posted by joepits
im only a 2nd year in college but i took engineering chem I and II and engineering physics I and II. B's in all.

OMG. The US education system must suck.

Excellent pictures HowardRoark!
I have skirted around the whole chemtrail non-issue for a few months now, and thanks to you, Off_The_Street's convincing 'chemtrail hoax' post, viewing Cliff Carnicom's family video, some research into basic meterology and some conversations with pilots, I too have reached the verdict that there is 'nothing to see here'!

Cheers guys!

Originally posted by FatherLukeDuke

Originally posted by joepits
im only a 2nd year in college but i took engineering chem I and II and engineering physics I and II. B's in all.

OMG. The US education system must suck.

Yeah, it is pretty scary, isn't it?

hopefully, Joe is in the minority.

[edit on 28-2-2005 by HowardRoark]

duplicate

[edit on 28-2-2005 by HowardRoark]

Originally posted by HowardRoark

Yeah, it is pretty scary, isn't it?

hopefully, Joe is in the minority.

[edit on 28-2-2005 by HowardRoark]

Or he is lying. I'm not saying he his of course, but as the believers would have it with "chemtrails" - "there is always a possibilty"

hey so thats what those are you know the awacs here leave a simular trail all over when climbing how do you know the difference.......

mystik, I don't understand your sentence.