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← GeographyWhich atmospheric feedback amplifies surface warming during an El Niño event in the eastern Pacific?
A)Decreased cloud formation reducing albedo✓
B)Increased trade wind strength cooling the ocean
C)Enhanced upwelling of cold, deep water
D)Reduced evaporation increasing latent heat flux
💡 Explanation
During El Niño, warmer surface waters lead to decreased stability in the lower atmosphere, reducing cloud formation because fewer condensation nuclei are present. Therefore, reduced albedo amplifies warming, rather than cooling from increased winds, upwelling, or evaporation, which are inhibited by El Niño conditions.
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