Are extreme rain and snow weather in many countries related?

It is reported that at the beginning of the new year, China suffered the "strongest snowfall" since winter. In addition to China, North America, Europe and other regions have also suffered from extreme weather such as blizzard recently.

According to the report, in view of the strongest rain and snow weather in China in recent years, experts from the Climate Prediction Office of the National Climate Center said that the warm and humid airflow from the Bay of Bengal was very strong recently, and it entered China from the southwest, where it met the weak cold air from north to south. The continuous wet and cold state promotes the formation of a wide range of rain and snow weather in the central and eastern regions, and the daily snowfall in some areas exceeds the local monthly extreme value.

From the time period, on average, the cold air is active in June 5438+ 10, and if there is plenty of water vapor, it is easy to have rain and snow weather, because generally speaking, the influence systems of winter rain and snow weather in different parts of the northern hemisphere have strong regional characteristics.

The weather systems that affect China are mainly members of the East Asian winter monsoon, such as the Siberian high, the western Pacific subtropical high and the southern branch trough. The activities of these systems are mainly concentrated in Asia, and the atmospheric movement is not isolated. For example, the different position of the polar vortex center in the northern hemisphere will have different effects on Asia or Europe and America.

I hope the extreme weather will pass soon!