The jet stream is the 'root of all evil' with regard to physics and weather people.
They picture it as a river, and it carries 'weather' or heat energy from BC to Britain. This is the fundamental 'truth' of all Influencer Weather Science. Yet it is wrong.
We can look at the wikithing to see that it is just a boundary effect between global warm and cold air. The particle motion within the jet stream is just circular, going round and round on a plane, that is tilted at the bottom slightly towards the East. I'm not showing the pictures from that site.
Particle motion is the key to defining what it does, which is nothing. It just goes down on the cold side and up on the warm side. It can carry nothing.
I was going to explain on how the myth started, but no... Just be happy it will always be with us, because no measurements will ever be done.
ps ok, I have to add this. I'm sitting on the dock with a strong south breeze coming at me, carrying warmth and pine pollen. I see a sailboard zooming very fast to the east. Is the breeze carrying anything to the east? No, it is a sailing effect. Same as what jet planes do in the jet stream. There is no 'air jet' down the middle carrying anything. No particle motion along it as in a river.
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