CLIMATE OF INDIA
EL NINO AND SOUTHERN OSCILLATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Normal conditions
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El Nino
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La Nina
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none of above
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Detailed explanation-1: -During El Niño, trade winds weaken. Warm water is pushed back east, toward the west coast of the Americas.
Detailed explanation-2: -The term El Niño (Spanish for ‘the Christ Child’) refers to a warming of the ocean surface, or above-average sea surface temperatures, in the central and eastern tropical Pacific Ocean.
Detailed explanation-3: -El Niño (the warm phase) and La Niña (the cool phase) lead to significant differences from the average ocean temperatures, winds, surface pressure, and rainfall across parts of the tropical Pacific.
Detailed explanation-4: -During an El Niño, wind patterns shift all over the Pacific Ocean. Most significantly, they get weaker (purple) in the eastern tropical Pacific, allowing warm surface water to move toward the Americas (NASA Earth Observatory map by Joshua Stevens using RapidScat data from the Jet Propulsion Laboratory.)