Contrail vs. Chemtrail

As many of you know, I am in the middle of researching for a series of videos debunking the chemtrail conspiracies. However, it has just occurred to me that I have never explained contrails (also known as aviaticus cloud formatting) despite producing several blog posts and podcasts debunking the chemtrail conspiracies. I plan to rectify this now, however, before I do I should probably talk about the difference between chemtrails and contrails.

This might surprise you to hear, but everyone I talked to at Save Our Sky (a protest against chemtrails and geoengeneering) accepts that aircraft can make white lines in the sky called contrails. These contrails are almost identical to chemtrails, apart from one major difference according to the protesters. Contrails only last seconds, whereas chemtrails can persist hour after hour. But is this true? Can contrails only last for a few seconds?

The first thing to note is that contrails are generally classified into two different types. Exhaust contrails which, as the name would suggest, are formed from the exhaust of the aircraft and aerodynamic contrails, which are formed by the temporary reduction of air pressure over the surface or in the middle of the plane’s wake vortex.

The vast majority of contrails you see in the sky left by aircraft are exhaust contrails, which are caused by the condensation of the water vapour in the aircraft’s exhaust. These white clouds are not a million miles away from your breath on a cold day. When you breathe out, your warm, damp lungs are adding moisture to the air, which condenses when it hits the cool environment. This condensation evaporates relatively quickly but as aircraft are in a much colder environment their condensed freeze almost but not quite instantly. Because of the low temperatures they can’t melt or evaporate but they do eventually fade away through a process known as sublimation where a solid turns into a gas. However the rate at which these ice crystals will sublime is dependent on the humidity of their environment. In low humidity the trails can disappear very quickly where as in a humid environment not only can the contrails last for a long time but they can also grow in a proceed called deposition (the opposite of sublimation where a gas is turned directly into a solid). As these ice crystals grow they will sink faster causing the trail to spread out as it sinks through altitudes with different wind speeds.

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Aerodynamic contrails are formed when there is a localised decreased in pressure and temperature. As a aircraft fly thought the air its wing tips and sometimes wing flaps can create vortex which persist in the atmosphere long after it has passed. The reduction in temperature and pressure across each vortex can cause water to condense out of the air making the vortices visible. This effect is usually only seen on humid days at low altitudes when the aircraft is coming into land or taking off.

Aerodynamic contrail

So can contrails only last for a few seconds? Yes but contrary to what the people said at the Save Our Sky protest they can also last for hours.

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About Myles Power (613 Articles)
My name is Myles Power, and I run the educational YouTube channel, powerm1985. I spend what little free time I have sharing my love of SCIENCE! through home experiments, visiting sites of scientific interest, and angrily ranting at pseudoscience proponents. I am also one of the founding members of the podcast 'The League of Nerds' - which I co-host with James from 'The History of Infection'.

12 Comments on Contrail vs. Chemtrail

  1. Myles, you probably rushed this article because I noticed an inordinate amount of spelling and grammatical errors.

    I am sure you can do better. Perhaps you should carefully proof read before posting.

    Anyway, keep up the good work and debunking.

    Like

  2. Just because they can last longer does not prove chemtrails are not real. Why do some airplanes have a chemtrails button. Why are they suddenly in the skies where they weren’t before? Why are they in Texas where it is always hot? What is Geo engineering?

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  3. Go to geoengineeringwatch.org

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  4. Myles, what about the night time chemtrails that are being spayed in the middle of the night! Why is there a need to spray at night. Second yesterday I was in the middle part of CA nothing around there on I5 highway but only a sky full of chemicals leaving the trail lingering away . Nothing’s there and it’s empty

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  5. Myles, contrails don’t spread out out, turn into wimsy clouds, and produce rain, either. I have watched chemtrails do this time and time again.

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  6. Alright mr myles, not here to cut you down sir nor do I dislike you but you as our top elites in this world sell the public lies who sadly most will buy into, I’ll leave a clip here of a doctor speaking at a university telling you how (unreal) chemtrailing is. As well others can look up John Brennan cus director admitting to chemtrailing as they lie openly saying it’s for global warming, no their spraying so much to hide the coming in planets and nibiru /planet x from being seen as it’s caught globally all people have to do is type chemtrailing hiding nibiru on YouTube you’ll get truth
    Link here doctor showing telling all about chemtrailing and the 40 chemicals that have been floating in our air daily as everyone in the united States is getting sicker with more colds, flus, and sicknesses because of these chemicals sprayed in the air you deny exists because for one I’m sure if you told truth for this cover-up Website you’d be out of a job sir.

    Others can search truth out as it’s not here at all. I just pray others come to Jesus as Savior before these planets shake your foundation core because that you can’t lie about in some paper…

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  7. Russ moore // March 29, 2017 at 6:52 pm // Reply

    GOD BE WITH ALL. WHY IS THE GOVERNMENT DOING THIS. TO MANY PEOPLE, THATS WHY!! THE OLD PEOPLE ARE GETTING IT THE WORSE. I TOOK MY MOTHER TO THE DOCTOR TODAY, ALL THE PEOPLE IN THERE HAD MASK ON AND ALL HAVING BREATHING PROBLEMS. THE GOVERNMENT NEEDS TO STOP ALL THIS SPRAYING , ALL THE LETHAL CHEMICALS. GOD HELP US ALL. I AM SPEAKING THE 1 ADMENDENT. YOU HAVE THE RIGHT TO SPEAK YOUR PEACE. I AM NOT HURTING ANYONE, JUST ARE GOVERNMENT. WHY!!!!
    PLEASE STOP. GOD BE WITH US ALL. THE LORD WILL STOP ALL OF THEM. THE LORD IS COMING SOON . BE PREPARED TO MEET YOUR MAKER. FOR THE REST EJOY YOURSELF IN HELL, WHERE YOU BELONG. THERE IS NO GLOBAL WARMING. JUST YOUR SPRAYING OF OUR WEATHER IS CAUSING ALL THIS. Please stop!!!

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  8. Steven Davis // March 29, 2017 at 7:32 pm // Reply

    Now you can look down on our city sidewalks in LA and see the round black spots from the many years of overhead spraying.

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  9. I go straight to the point:
    Air with a % of humidity is heated up inside engines, humidity becomes vapor.
    This vapor within 30meters freezes down to -40. At a speed of 850km/h it has about 0,2 seconds of time.
    Freezing down means water molecules become ice crystals.
    If the hair is dry enough those ice crystals will evaporate, even at -40.

    Contrails are of the same compound as clouds, behave in the exact same way.
    If the air is humid, the air humidity will become dust, contrails will stay, and expand and the sky become cloudy.

    Ask yourself why shouldn’t a contrail stay but a cloud can stay in the sky for days.

    This is how I understand the phenomena.
    Find me on facebook:
    http://Www.facebook.com/jonathanbopp
    I ain’t willing to waste my precious time. If you believe in something, like chemtrails as a believer beliefs in his religion, your mind isn’t free. I won’t change your mind, I won’t discuss this subject.

    Live well! Bye!
    Jonathan Bopp

    Liked by 1 person

  10. Ben Sambell // May 2, 2017 at 4:09 am // Reply

    I’m really, really sorry to say this Myles, but I enjoyed the comments section on this one more than the article. Don’t get me wrong, it’s a fantastic article, very informative, but the comments have incredible entertainment value that you just can’t get from accurate information 😅😅😅

    Like

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