Which phenomenon causes deflection in atmospheric jet streams around high-pressure cells?

💡 Explanation

When jet streams encounter high-pressure cells, the Coriolis effect induces deflection because the pressure gradient force balances with the Coriolis force, leading to geostrophic wind behavior that spirals clockwise in North Hemisphere. Therefore gradient variations of the Coriolis effect cause jet stream deflections, rather than other mechanisms, which require different atmospheric conditions and forces.

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