A negative phase of the Arctic Oscillation (AO) is associated with:
A. Warmer than normal temperatures in the Arctic
B. Lower than normal pressure over the Arctic
C. Cooler than normal temperatures in the Arctic
D. Higher than normal pressure over the Arctic
Answer: Option D
Solution (By JKSSB Mock Tests)
A negative AO phase is characterized by higher than normal pressure over the Arctic and lower than normal pressure over the mid-latitudes. This allows cold Arctic air to spill southward, leading to colder winters in the mid-latitudes.
Explanation:
Agriculture, especially the use of nitrogen-based fertilizers, is a major source of nitrous oxide emissions. Burning fossil fuels and industrial processes release CO2 and other pollutants.
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