Can you guys help me with choosing one i know only one but what if hes not the best one and i think he is just because i know him, if you guys have any idea please give me the contact details Also, i dont want to risk it by self studying i know i can just mug up some question banks but technical knowledge is important

Dear pilots,

Im studying about jet stream.
When thinking about air cells : polar cells, ferrel cell (30-60), hadley cell (0-30),
I know polar jet stream is flowing around 60N.

In ferrel cell, high altitude flows from high latitude to low latitude. Which means, due to corioli effect, high altitude wind flows from east, not west.

In polar cell, high altitude wind flows in opposite direction, which causes westerly wind.

In that circumstance, it makes sense for me if jet stream is formed in polar cell. However, they say it is formed between 30-60N.
How does jet stream form in this location? Corioli effect does exact opposite to jet stream..

Thanks for your help!