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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cooling of water in the Atlantic Ocean off the coast of South America
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cooling water off the Atlantic coast of the US
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cooling water in the Pacific Ocean off the coast of South America
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warm water in the Pacific Ocean off the coast of South America
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Detailed explanation-1: -During La Niña events, trade winds are even stronger than usual, pushing more warm water toward Asia. Off the west coast of the Americas, upwelling increases, bringing cold, nutrient-rich water to the surface. These cold waters in the Pacific push the jet stream northward.
Detailed explanation-2: -La Niña is caused by a build-up of cooler-than-normal waters in the tropical Pacific, the area of the Pacific Ocean between the Tropic of Cancer and the Tropic of Capricorn. Unusually strong, eastward-moving trade winds and ocean currents bring this cold water to the surface, a process known as upwelling.
Detailed explanation-3: -La Niña. La Niña is a climate pattern that describes the cooling of surface-ocean water along the tropical west coast of South America.
Detailed explanation-4: -La Niña causes water in the eastern Pacific to be colder than usual. In the same region, El Niño can cause the water to be warmer than usual. Areas that are hit with drought during La Niña years are pummeled with rain in El Niño years.
Detailed explanation-5: -During a La Niña event, the trade winds strengthen, allowing ocean water off the coast of South America to the central equatorial Pacific to cool. This happens because stronger winds churn cooler, deeper sea water up to the ocean’s surface – a process known as upwelling.