What happens during a La Niña event?
During La Niña events, strong winds push warm water towards Asia and upwelling increases of the west coast of the Americas. This means that cold, nutrient-rich water rises to the surface in the Pacific, which pushes the jet stream northward.
What is most likely to happen during the La Niña phase?
During a La Nina event, the changes in Pacific Ocean temperatures affect the patterns of tropical rainfall from Indonesia to the west coast of South America. These changes in tropical rainfall patterns affect weather patterns throughout the world.
Is La Niña caused by climate change?
La Niña and her brother El Niño are amplified by the effects of climate change, and, in turn, worsen climate change itself. According to SciJinks, “Like many siblings, the two weather patterns are opposites in almost every way. La Niña causes water in the eastern Pacific to be colder than usual.
Which of the following best describes La Niña?
Which of the following best describes a La Niña? It has the opposite effect than does an El Niño event. What is the ultimate source of energy for most wind?
What is a La Niña weather event?
La Niña events are typically defined when SOI values are sustained above +7 and NINO3. 4 temperatures are more than −0.8 °C below average. Events that maintain index values close to these thresholds are generally classified as moderate to weak, while those that greatly exceed them are referred to as strong.
Where does La Niña happen?
La Niña is a weather pattern that occurs in the Pacific Ocean. In this pattern, strong winds blow warm water at the ocean's surface from South America to Indonesia. As the warm water moves west, cold water from the deep rises to the surface near the coast of South America.
What causes La Niña?
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.
What causes El Niño La Niña?
El Niño and La Niña result from interaction between the surface of the ocean and the atmosphere in the tropical Pacific. Changes in the ocean impact the atmosphere and climate patterns around the globe. In turn, changes in the atmosphere impact the ocean temperatures and currents.
What is the effect of La Niña?
One important global impact of La Niña is its effect on the Atlantic hurricane season. La Niña reduces wind shear—the change in winds between the surface and the upper levels of the atmosphere—allowing hurricanes to grow.
How does La Niña affect the climate of the Pacific ocean quizlet?
The Eastern Pacific Ocean's temperature decreases during La Nina. It is still warmer than our ocean but compared to an average year, the water is cooler.
Where does it happen La Niña?
La Niña is a weather pattern that occurs in the Pacific Ocean. In this pattern, strong winds blow warm water at the ocean's surface from South America to Indonesia. As the warm water moves west, cold water from the deep rises to the surface near the coast of South America.
What causes La Niña and El Niño?
El Niño and La Niña result from interaction between the surface of the ocean and the atmosphere in the tropical Pacific. Changes in the ocean impact the atmosphere and climate patterns around the globe. In turn, changes in the atmosphere impact the ocean temperatures and currents.
What triggers an El Niño event?
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. The clearest example of El Niño in this series of images is 1997.
How does La Niña affect the climate of the Pacific ocean?
La Niña causes the jet stream to move northward and to weaken over the eastern Pacific. During La Niña winters, the South sees warmer and drier conditions than usual. The North and Canada tend to be wetter and colder. During La Niña, waters off the Pacific coast are colder and contain more nutrients than usual.
What is an effect of La Niña quizlet?
During La Ninoa, the warm pool shrinks. During El Nino, the trade winds strengthen. After the buildup of cooler waters in tropical Pacific, the easterly trade winds strengthen, cold upwelling off Peru and Ecuador intensify and sea-surface temps drop below normal.
What triggers El Niño?
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. The clearest example of El Niño in this series of images is 1997.
How does La Niña and El Niño occur?
El Niño and La Niña events are natural occurrences in the global climate system resulting from variations in ocean temperatures in the Equatorial Pacific. In turn, changes in the atmosphere impact the ocean temperatures and currents. The system oscillates between warm (El Niño) to neutral or cold (La Niña) conditions.
What is a La Niña quizlet?
A climate pattern that describes cooling of surface ocean waters along tropical west coast of south America. -Typically follows El Niño.
Which of the following would occur during a La Niña event quizlet?
Which of the following would occur during a La Niña event? Trade winds strengthen, causing greater upwelling of cold water off the west coast of South America.
Which of the following would occur during a La Niña event?
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.
What is La Niña quizlet?
La Niña. Unusually cold water temps in the pacific caused by strong easterly winds.