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← GeographyWhich phenomenon reduces surface wind speed globally near 30 degrees latitude?
A)Hadley cell subsidence✓
B)Ekman spiral intensification
C)Rossby wave amplification
D)Geostrophic balance disruption
💡 Explanation
Air descends in Hadley cells around 30 degrees latitude, inhibiting surface winds because pressure gradients weaken due to increased atmospheric stability from adiabatic compression, therefore subsidence suppresses horizontal air movement, rather than inducing stronger winds from intensified rotational flows.
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