Influence of El Nino on Climate in China

The impact of El Nino on China's climate is as follows:

El Nino is prone to warm winters, heavy rains and floods in the south, high temperature and drought in the north and Leng Xia in the northeast. Extreme weather is more dangerous than simple temperature changes.

1, typhoon reduced. The number of tropical storms (typhoons) in the western Pacific and the number of coastal landings in China are less than normal.

2. The summer monsoon is weak, and the monsoon rain belt is south, which is located in the middle of China or south of the Yangtze River. The northern region is prone to drought and high temperature in summer, while the southern region is prone to low temperature and flood. In the past century, serious floods in China, such as 193 1, 1954, 1998 in the middle and lower reaches of the Yangtze River, all occurred one year after the El Ni? o phenomenon.

3. In the winter after El Nino, the northern part of China is prone to warm winters.

Reason:

The southeast wind weakened. When the southeast trade winds blowing near the equator in the southern hemisphere weaken, the cold water flooding in the Pacific Ocean will be reduced or stopped, resulting in abnormal warming of sea water temperature in a large range. The traditional equatorial ocean currents and atmospheric circulation anomalies lead to abnormal precipitation in some areas along the Pacific Ocean, while others are seriously dry.

When the earth's rotation slows down, the "braking effect" makes the atmosphere and seawater in the equatorial belt gain an eastward inertia, the equatorial ocean current and trade winds weaken, the warm water in the western Pacific flows eastward, and the cold water in the eastern Pacific is blocked, resulting in the El Ni? o phenomenon that the accumulation of warm water causes the seawater to warm and the sea surface to rise.