Question

Write a note on el nino.

Answer 1

Answer is

When we notice different weather patterns, we usually think of what's in the air. But did you know that a lot of what happens in the air is because of the temperature of the oceans? El Niño is an abnormal weather pattern caused by the warming of the Pacific Ocean near the equator, off the coast of South America. The sun warms the water near the equator, which can make more clouds and, therefore, more rain. However, normally there are trade winds, which blow that warm water west. During El Niño, though, those trade winds weaken, or even reverse, which lets the warm water that is usually found in the western Pacific remain or flow east. This warm water displaces the cooler water that is normally found near the surface of the eastern Pacific, setting off atmospheric changes that affect weather patterns in many parts of the world.

A temperature increase of least 0.9 F (0.5 C) needs to occur in the waters of the eastern Pacific Ocean near the equator for it to be considered an El Niño year. Although El Niño does not occur in a perfectly regular pattern, it seems to happen every 2 to 7 years. Following an El Niño, an opposite phenomenon occurs, called La Niña. During La Niña, the eastern Pacific Ocean experiences cooler than normal temperatures around the equator.

Answer 2

El Nino is a name given to the periodic development of a warm ocean current along the cost of Peru as a temporary replacement of cold peruvian current El Nino is a Spanish word meaning the child. And refers to the baby Christ. As this current starts flowing during Christmas. The presence of the El Nino leads to an increase in sea surface temperature and weakning of the trade winds in the region

referred to NCERT book of class 9

if it helps you, please mark me as brainliest