A positive phase of the North Atlantic Oscillation (NAO) is associated with:
A. Cooler than normal waters in the North Atlantic
B. Stronger than normal Azores High and Icelandic Low
C. Warmer than normal waters in the North Atlantic
D. Weaker than normal Azores High and Icelandic Low
Answer: Option B
Solution (By JKSSB Mock Tests)
A positive NAO phase is characterized by stronger than normal Azores High and Icelandic Low, leading to stronger westerly winds, milder and wetter winters in northern Europe, and colder and drier winters in southern Europe.
Explanation:
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:
Occluded fronts are associated with complex weather patterns, including a mix of rain, snow, and strong winds, as the cold front overtakes the warm front.
Explanation:
The troposphere is characterized by decreasing temperature with altitude (normal lapse rate) due to adiabatic cooling, and it contains most of the weather phenomena.
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