What's the weather like in El Nino?

El Nino phenomenon, under normal circumstances, the equatorial warm current is from east to west. El Nino phenomenon occurs because the equatorial trade wind is abnormal, so it slows down or reverses the equatorial warm current. Due to abnormal ocean currents, the global climate is abnormal, especially in countries along the Pacific Ocean.

El Nino is a global climate anomaly, which usually lasts for more than three months. The abnormal change of seawater temperature in tropical Pacific makes the global monsoon abnormal, which in turn leads to extreme weather. El Nino event is a climatic phenomenon caused by the imbalance between ocean and atmosphere in the equatorial belt of the Pacific Ocean. Simply put, the large-scale sea water warming in the equatorial belt of the Pacific Ocean heats the air above the sea surface, and the air is heated, which affects the global heat balance, thus causing abnormal weather in many parts of the world. "El Nino" is unpredictable and lasts for different periods, which is extremely harmful to human beings.

Because of the rotation of the earth, the difference of seawater density and temperature, seawater is constantly flowing, forming a global warm current and cold current. Warm current flows through areas with large evaporation and abundant precipitation, while cold current flows through areas with little precipitation and dry climate. Many deserts in the world are distributed in the mainland near the cold current of the ocean, and ocean currents will also make the sea water swell or sink at different depths of the ocean. Coupled with solar radiation, the global atmosphere is divided into several pressure zones and wind direction zones.

Abnormal seawater temperature and wind direction in tropical Pacific make the upwelling of Peru cold current slow down or stop, and become a warm current-El Nino warm current, which will replace the original cold current, and then change the equatorial ocean current, change the precipitation and wind direction flowing through this area, and then affect the global weather conditions. The impact of El Nino on China can be summarized as "flooding in the south and drought in the north". The pressure belt and summer monsoon weaken, the monsoon rain belt moves south, the precipitation in the south increases, and the number of typhoon landings decreases. The northern continent became dry and hot, and the water vapor supplement was less.

When the El Ni? o phenomenon occurs, it is more likely to cause extreme weather phenomena. Some serious floods in China (1998, etc. ) has something to do with the El Ni? o phenomenon.