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Vapor dispersal. (ani.social)

submitted 2 months ago by MyDarkestTimeline01@ani.social to c/memes@lemmy.world

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[–] Lucien@mander.xyz 33 points 2 months ago (18 children)

Well, it's not jet exhaust you're seeing, though. It's water vapor in air that's been compressed in a jet engine and then quickly decompressed out of the back, which causes the air to cool thus condensing the water vapor into droplets similar to those in a cloud.

[–] JeSuisUnHombre@lemm.ee -1 points 2 months ago (6 children)

Just because the contrails are science

I understand that part, doesn't stop them from containing the plane exhaust which is directly contributing to global warming

[–] Lucien@mander.xyz 6 points 2 months ago (5 children)

Well, it's not jet exhaust you're seeing, though.

I did acknowledge that, by the way. Jet fumes certainly contribute to global warming. I wasn't intending to imply they don't. Simply that it's not jet fumes you're seeing in contrails.

[–] Deme@sopuli.xyz 3 points 2 months ago (1 children)

I will convolute this conversation further by stating that contrails (like all other clouds consisting of ice crystals) warm up the planet by letting shortwave radiation from the Sun through while being more reflective in longer infrared wavelenghts, thus trapping outgoing longwave radiation. Contrails themselves are also warming the planet up. It's a small contribution in the grand scheme, but far from a trivial one.

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