What is La Nino characterized by?

The El Niño story. El Niño is characterized by unusually warm ocean temperatures in the Equatorial Pacific, as opposed to La Niña, which is characterized by unusually cold ocean temperatures in the Equatorial Pacific.

What is La Niña and what are the causes and effects?

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 is the La Niña phenomenon?

La Niña is a weather phenomena characterized by unusually cold ocean temperature in the Equatorial Pacific which causes increased numbers of tropical storms in the Pacific Ocean. Health Effects.

What causes the El Niño phenomenon?

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.

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.

Which of the following are characteristics of an El Niño weather pattern?

El Niño episodes feature an equatorward- shifted, stronger-than-normal jet stream and wetter-than-average conditions across the southern part of the United States, and less storminess and milder-than-average conditions across the North.

Which condition happens during the La Niña?

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.

Who or what are most affected by La Niña?

Among the 14 La Niña events, nine came immediately after an El Niño year. La Niña increases the likelihood of both above-average and below-average rainfall in certain areas of eastern Africa. A potential La Niña is likely to have the most severe impact on Kenya and south-central Somalia.

Which condition happens during El Niño phenomenon?

An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. The opposite condition is called La Niña. 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.

Which of the following is the cause of La Niña?

This phenomenon occurs when the easterly trade winds get stronger and blow more warm water west, allowing cold water below the sea’s surface to push towards the top near the South American coast to replace the warm water. This, therefore, means that the easterly trade winds are to be blamed for partly causing La Niña.

What are the different effects of El Niño and La Niña?

El Niño and La Niña affect not only ocean temperatures, but also how much it rains on land. Depending on which cycle occurs (and when), this can mean either droughts or flooding. Typically, El Niño and its warm waters are associated with drought, while La Niña is linked to increased flooding.