Which of the following is associated with an El Niño event?
During an El Niño event, westward-blowing trade winds weaken along the Equator. These changes in air pressure and wind speed cause warm surface water to move eastward along the Equator, from the western Pacific to the coast of northern South America.
Which is associated with El Niño quizlet?
El Nino is a disruption of the ocean-atmospheric system, which is characterized by a large scale weakening of the trade winds and warming of the surface layers in the eastern and central equatorial Pacific Ocean.
What happens during an El Niño event quizlet?
Where does El Nino primarily occur? During El Nino however, the pressure changes causing trade winds to diminish and warm water to move eastward instead of westward along the equator. This causes the traditionally cold waters along the coast of west South America to become warmer.
Which situation is often associated with El Niño events quizlet?
Which situation is often associated with El Niño events? High pressure dominates the west coast of South America, providing dry conditions. The South Asian monsoon is strongly developed and brings heavy rainfall. Heavy rains occur in northern Australia and Indonesia as ocean levels rise.
How El Niño develops?
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. During El Niño years, such as 1997, the southeast receives more rain than average.
Why El Niño occurs?
An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. During this phase of ENSO, the water is cooler than normal and the east winds are stronger. El Niños typically occur every 3 to 5 years.
When El Niño occurs quizlet?
This occurs when the land is warmer than the sea. This creates a low pressure over the land and a high pressure of the sea. The wind blows from the high pressure over the sea to the low pressure over the land.
What is El Niño geography quizlet?
Terms in this set (16) El Nino. warm ocean temperatures in Pacific near South America. La Nina. Opposite to El Nino, cooler temperatures in the Pacific near South America and along the equator.
How does El Niño develop quizlet?
This occurs when the sea is warmer than the land. This creates a low pressure over the sea and a high pressure of the land. The wind blows from the high pressure over the land to the low pressure over the sea.
How does El Niño begin quizlet?
is an abnormal weather pattern that is caused by the warming of the Pacific Ocean near the equator, off the coast of South America.
What occurs during a major El Niño event?
During an El Niño event, the surface waters in the central and eastern Pacific Ocean become significantly warmer than usual. It also reduces the upwelling of cooler, nutrient-rich waters from the deep—shutting down or reversing ocean currents along the equator and along the west coast of South and Central America.
What is El Niño quizlet?
El Nino. (oceanography) a warm ocean current that flows along the equator from the date line and south off the coast of Ecuador at Christmas time. La Nina. A cooling of the ocean surface off the western coast of South America, occurring periodically every 4 to 12 years and affecting Pacific and other weather patterns.