"Autumn Tiger" has made a comeback in many places in the south. Will there be a rare winter this year?

Autumn tigers are making a comeback in many places in the south. It raises the temperature. Although it is autumn, people still feel hot. But in some places in the north of China, it is autumn, and you can feel the coolness.

Under the trend of global warming and the influence of La Nina phenomenon, whether there will be a rare winter in China, the official made such a response to this year's winter climate forecast. Since 1986, the number of warm winters has gradually increased. However, after La Nina incident, the winter temperature in some areas was low. Especially in northwest China, east and north of southwest China, most of north China, south of northeast China and north China, the temperature is abnormal, which is lower than in previous years. La Nina events also have an impact on winter precipitation in China. Make a large range of precipitation less. Especially in northern Xinjiang, southern Southwest China, middle and lower reaches of the Yangtze River and eastern Northeast China, but there is more precipitation in eastern Northwest China and northern Southwest China. Besides La Nina, China's winter climate is also influenced by snowfall in Europe and Asia, Arctic sea ice and other factors. It is also affected by the natural rate of change in the atmospheric system.

At present, it is autumn in Huanghuai, North China, Southwest China and Northwest China. In the same period, East Inner Mongolia entered autumn about ten days earlier than Northeast China. In the Yellow Sea and North China Plain, autumn is delayed by about a week.

Some experts predict that the winter temperature will be relatively low from 2022 to 2023. What is the reason for this phenomenon? La Nina year? . That is to say, it will be colder in the south than in the north in winter, which may lead to extreme cold. La Nina is produced by the interaction between the atmosphere and tropical oceans. The trade winds blow warm water to the equatorial western Pacific, and the cold water under the sea surface supplements the warm water blown away by the equatorial eastern Pacific. In this case, the SST in the equatorial eastern Pacific will be lower than that in the equatorial western Pacific. The enhancement of trade winds will further aggravate the development of cold water in the equatorial eastern Pacific. In this way, there will be La Nina phenomenon, and there will be a cold winter.