Why is the lowest temperature lower this winter than in previous years?

In the winter peak period of most La Nina years, the cold air affecting our country is more frequent, and so is this year. Moreover, this winter's cold air affects our country in the northwest path, and the overall force is relatively strong. But whether it is the coldest needs comprehensive consideration in many aspects.

Based on the formation of La Nina, many people think that this winter will be colder than normal, and some even say that this winter will be the coldest winter in 60 years.

As early as 10, meteorologists have refuted these statements and given explanations.

As far as this winter is concerned, according to experts' analysis, as far as the overall temperature trend in winter is concerned, except for the northeast, eastern North China and parts of Tibet, the overall temperature trend in most parts of central and eastern China is close to normal or low, but the temperature in winter fluctuates greatly, with obvious periodic changes and large fluctuations in cold and warm.

Especially around June 5438+ 10 next year, the cold air force affecting China will obviously become stronger. There may be strong snow and ice weather in the northern region, so take precautions. Affected by La Nina, it is unlikely that there will be a large-scale and sustained low-temperature rain and snow freezing in the southern region this winter. However, in the eastern part of Southwest China and the western part of Jiangnan, there will still be staged rain and snow weather in winter.

Although the appearance of La Nina will have a certain impact on the temperature in winter, it is still a bit difficult for La Nina to turn this winter into a cold winter on her own.

Under the background of global warming, the relationship between various climatic factors affecting China is very complicated, and La Nina is only one of the important factors affecting China's winter climate. According to experts' analysis, winter in China is not only affected by tropical oceans, but also cold air comes from high latitudes. The changes of atmospheric circulation in the middle and high latitudes, including the changes of sea ice and snow, will have obvious effects on the circulation system in the middle and high latitudes.

Therefore, the prediction of winter climate can not rely solely on a certain phenomenon to draw a conclusion, but should consider their interaction from many aspects.