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← GeographyWhich climatic consequence results when stratovolcano eruptions inject sulphur dioxide into stratosphere?
A)Years-long global cooling episode✓
B)Increased frequency of El Nino events
C)Intensified regional monsoon seasons
D)Decreased frequency of tropical cyclones
💡 Explanation
When sulphur dioxide reaches the stratosphere, oxidation produces sulphate aerosols persisting for years because gravitational settling removes them slowly, leading to increased albedo and shortwave reflection causing a global cooling period. Therefore global cooling results, rather than increased El Nino, monsoon changes, or reduced cyclones which are influenced by different atmospheric mechanisms.
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