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← GeographyWhich jet stream effect results when a strong temperature gradient develops at mid-latitudes?
A)Increased geostrophic wind velocity✓
B)Decreased atmospheric stability aloft
C)Enhanced surface pressure gradient
D)Reduced seasonal temperature variation
💡 Explanation
When a strong temperature gradient develops, the pressure gradient force increases because warmer air expands and colder air contracts, leading to a greater pressure difference at a constant altitude. Therefore increased wind velocity results, rather than decreased stability, enhanced pressure gradients at the surface, or reduced temperature variation, which require different atmospheric conditions.
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