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Old 03-10-2012, 08:15 PM
 
37 posts, read 45,929 times
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http://goddessontheloose.com/wp-cont...em-Trails2.jpg


Could someone explain to me this phenomenon?
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Old 03-10-2012, 08:20 PM
 
Location: Perth, Western Australia
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They're contrails by the looks of it.

Contrail - Wikipedia, the free encyclopedia
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Old 03-11-2012, 06:24 AM
 
Location: Laurentia
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Contrails. I see them all the time, although not usually in that quantity. If you live in a heavily-trafficked area, that quantity wouldn't be unusual.
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Old 03-11-2012, 11:12 AM
 
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How could they be contrails when they stay up in the air for hours on end and thicken like clouds?

I thought that contrails stay for a few minutes but these that I have seen stay for hours.

I notice My area gets them in the Northeast when the jet stream is over me.

I tracked this.
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Old 03-11-2012, 11:36 AM
 
Location: France
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They get spread by high altitude winds, that's probably why you tend to see them when the jet stream is over you. The higher the relative humidity at this level, the longer they stay around. When high altitude air is dry, they disappear shortly after the plane has passed. When it's humid, they hang around and form an ugly mess of altitude clouds.
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Old 03-11-2012, 12:08 PM
 
Location: Leeds, UK
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Some people believe they are chemtrails, where governments spray whatever up in the air. I don't know really, I don't like these nutty conspiracies

But yeah they're normal, they are totally common here, in fact, they are present here right now.
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Old 03-11-2012, 12:17 PM
 
Location: Top of the South (Nelson), NZ
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They don't really form much during the summer months, and are just starting to reappear now. Another marker of the seasons change.
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Old 03-11-2012, 12:33 PM
 
37 posts, read 45,929 times
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then what type of planes cause these?

the smoke that causes these do not come out of all planes.

I have seen 3 planes in a line flying at the same time with the same smoke that was lingering for hours but I never see this coming out of commercial planes.

Why does it occur with certain planes but not others?
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Old 03-11-2012, 12:35 PM
 
37 posts, read 45,929 times
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Cloud Seeding, water resource management, increase precipitation - Weather Modification, Inc.

Also take a look at this website.
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Old 03-13-2012, 04:48 AM
 
Location: Melbourne AUS
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Dude, relax. It's just harmless water vapor. It happens when the hot exhaust from jet engines condenses as it hits the cold humid air aloft.
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