Which effect most directly establishes the polar jet stream along the boundary between the Ferrel and Polar cells?

💡 Explanation

When a strong temperature gradient exists the Coriolis effect acts more intensely on the moving air masses resulting from convection because greater temperature differences increases pressure gradients. Therefore, the thermal gradient intensifying Coriolis deflection establishes the polar jet, rather than orographic lift, latent heat, or Ekman transport, which involve different mechanisms and locations.

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