# More jet contrail info. **URL:** \ **Category:** Cecil's Columns/Staff Reports\ **Created:** [November 14, 2001, 2:53pm UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316 "2001-11-14T14:53:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![toadspittle](https://avatars.discourse-cdn.com/v4/letter/t/c0e974/32.png) [@toadspittle](https://boards.straightdope.com/u/toadspittle)\ **Post date:** [November 14, 2001, 2:53pm UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/1 "2001-11-14T14:53:54Z")
> **[Briefly Empty Skies Offer Climate Clues (Published 2001)](https://www.nytimes.com/2001/10/30/science/briefly-empty-skies-offer-climate-clues.html)** > > Suspension of flights after Sept 11 attacks has given scientists rare chance to improve their analysis of how aviation affects climate; Dr Patrick Minnis and others are reviewing satellite images of contrails and clouds created by few jets flying... More of just an FYI: Some interesting data came out of the 9/11 plane grounding, which provided a chance to observe otherwise clear skies and only a few planes. Cecil’s column: [http://www.straightdope.com/columns/000616.html](http://www.straightdope.com/columns/000616.html) ---
**Author:** ![Arnold\_Winkelried](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@Arnold\_Winkelried](https://boards.straightdope.com/u/Arnold_Winkelried)\ **Post date:** [November 16, 2001, 2:14am UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/2 "2001-11-16T02:14:23Z")
Another interesting fact - the website mentioned in the Straight Dope article, [contrailconnection.com](http://contrailconnection.com) , now has this text: _Contrail Connection will be closing for good on August 21 2001 all information and images will remain online until further notice, but all message boards, reporting forms and any other interactive feature will be deleted._ and you’re redirected to [Project Paranormal](http://www.projectparanormal.com/). Did the government finally catch up with its contrail victims and eliminate their website? :eek: ---
**Author:** ![tracer](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tracer/32/20578_2.png) [@tracer](https://boards.straightdope.com/u/tracer)\ **Post date:** [November 20, 2001, 3:59pm UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/3 "2001-11-20T15:59:37Z")
> [@](#): > > [http://www.nytimes.com/2001/10/30/science/earth/30CONT.html](http://www.nytimes.com/2001/10/30/science/earth/30CONT.html) This link requires me to register with [nytimes.com](http://nytimes.com) in order to read it. Can you give us a little hint as to what kind of “interesting” data this article provides, **toadspittle**? ---
**Author:** ![Arnold\_Winkelried](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@Arnold\_Winkelried](https://boards.straightdope.com/u/Arnold_Winkelried)\ **Post date:** [November 20, 2001, 9:54pm UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/4 "2001-11-20T21:54:33Z")
tracer, I think registration to the NY Times site is free. iN any event: October 30, 2001 Briefly Empty Skies Offer Climate Clues By ANDREW C. REVKIN Copyright 2001 The New York Times Company summary: NASA images show a sky with hardly any contrails above the eastern coast of the USA. The large amount of contrails usually found above the area form cirrus clouds that let sunlight in and trap the rising heat from the earth, which creates a warming trend. Dr. Minnis from NASA said the lack of flights after 11 September offered an ideal situation for doing a comparison study. From satellite photos one could tell how a single contrail (from a military flight following 11 September, on a day where no commercial flights were allowed) turns into a cirrus cloud. This will help enhance computer models on the effect of aviation on climate. [Edited by Arnold Winkelried on 11-20-2001 at 04:03 PM] ---
**Author:** ![Starbury](https://avatars.discourse-cdn.com/v4/letter/s/f04885/32.png) [@Starbury](https://boards.straightdope.com/u/Starbury)\ **Post date:** [November 26, 2001, 9:55pm UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/5 "2001-11-26T21:55:06Z")
Jon Rappoport has recently written about chemtrails on his website ([Nomorefakenews.com](http://www.nomorefakenews.com))…he points to a US Air Force report from the late '60s, entitled “Owning the Weather by 2025” as a possible origin for the deliberate use of chemtrails by the military. He also refers to a study of chemtrails (which was done after Cecil’s article), set up by the FAA, which showed that the chemtrails left behind by military jets lasted significantly longer (by several minutes) than the trails left by commercial airliners…I’m sure you can make up your own conspiracy theories for why this would be. Anyway, the impact of his argument is somewhat lessened by the fact that this article is immediately preceded by a discussion of UFO’s, but its worth checking out if you’re interested: [The Link](http://nomorefakenews.com/novdec2001.htm) ---
**Author:** ![CurtC](https://avatars.discourse-cdn.com/v4/letter/c/ce73a5/32.png) [@CurtC](https://boards.straightdope.com/u/CurtC)\ **Post date:** [November 27, 2001, 2:48am UTC](https://boards.straightdope.com/t/more-jet-contrail-info/93316/6 "2001-11-27T02:48:40Z")
The water vapor in contrails condenses around particulate stuff in the exhaust. I wouldn’t be surprised if military jets had more particulates than highly efficient, clean-burning commercial airliners.