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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Warmer ocean waters allows for warm air to be blown toward the United States and cause droughts.
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Cooler ocean water causes the air to cool, and brings high air pressure to the United States.
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Warmer ocean water allows for warmer, wet air to travel east toward the United States.
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none of above
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Detailed explanation-1: -During an El Niño winter, the ocean warming at the equator sets off a chain reaction that affects the atmospheric circulation at the equator, altering the jet stream by making it stronger and extending it toward the California coast. This causes more storms than normal to approach the California coast.
Detailed explanation-2: -El Niño occurs when warm water builds up along the equator in the eastern Pacific. The warm ocean surface warms the atmosphere, which allows moisture-rich air to rise and develop into rainstorms.
Detailed explanation-3: -The changes in sea surface temperatures during El Niño and La Niña are caused and helped along by changes in the trade winds, which normally blow from east to west across the tropical Pacific Ocean.
Detailed explanation-4: -Reason: The presence of the EI Nino leads to an increase in sea – surface temperatures and weakening of the trade winds in the region. The El Nino generally occurs once in every 4-5 years. It displaces the cold Peru Ocean current flowing along the Peru coast.