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← GeographyWhich thermal consequence occurs when reduced wind stress weakens subtropical ocean gyre circulation?
A)Increased sea surface temperature stratification✓
B)Decreased deep water formation at high latitudes
C)Enhanced coastal upwelling intensity
D)Reduced ice sheet melt rates
💡 Explanation
When wind stress decreases, Ekman transport diminishes, weakening gyre circulation and reducing vertical mixing because thermal energy is trapped in the upper ocean layers. Therefore, increased sea surface temperature stratification results, rather than deep water formation, upwelling enhancement or decreased ice sheet melt rates, which depend on different dynamics.
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