Why is the weather so strange this year?

El Nino warm current is an abnormal natural phenomenon in the Pacific Ocean, and it is a famous Peruvian cold current flowing from south to north on the west coast of South America and the eastern part of the South Pacific. From June 165438+ 10 to March of the following year, it is summer in the southern hemisphere. The water temperature in the southern hemisphere generally rises and the equatorial warm current flows westward. At this time, the global pressure belt and wind belt move south, and the northeast trade wind crosses the equator and deflects to the left into the northwest monsoon under the action of the southern hemisphere self-deflection force (also known as geostrophic deflection force). The northwest monsoon not only weakens the southeast trade wind, which is near the west coast of Peru, but also weakens or even disappears the cold water flooding of Peru's cold current. It also blows the equatorial warm current with higher water temperature to the south, which makes the water temperature of Peru's cold current abnormally rise. This quiet and unstable ocean current is called "El Nino Warm Current".

El Nino is divided into El Nino phenomenon and El Nino event. El Nino is a climatic phenomenon of abnormal warming of sea surface temperature in tropical Pacific Ocean. Large-scale warming in the tropical Pacific will cause global climate change, but it will take more than three months to determine whether the El Ni? o event really happens. After El Nino, La Nina sometimes follows.

However, according to the satellite images released by the National Aeronautics and Space Administration (NASA) on February 27, 20 15, the El Ni? o phenomenon in the Pacific shows no signs of abating. Experts predict that 20 16 may become the most destructive year of El Ni? o.