What is the abnormal weather in 222? Why is the weather so abnormal this year?

I believe that everyone has been concerned about the weather in various parts of China recently. In some places, frequent rainfall has caused natural disasters such as heavy rain, mountain torrents and mudslides, while in some places, the high temperature continues and the high temperature weather is extremely fierce. So why is the weather so abnormal this year? What is the abnormal weather in 222? Let's take a look at the specific reasons.

why is the weather so abnormal this year?

The abnormal weather in p>222 is an abnormal phenomenon, which is mainly caused by La Nina event and tropical SST anomaly. According to the forecast of China's climate center, the second wave of "double La Nina phenomenon" in China is expected to end in spring, but according to the data released by American climate experts, the third wave of La Nina phenomenon appears, so it may be affected by La Nina phenomenon in the summer of 222. It is predicted that the climate situation in China will be biased in the later period, and there will be obvious regional and staged drought and flood disasters, and extreme weather will be more, with rainy areas mainly concentrated in the northern region.

Specific reasons for abnormal weather in p>222

1. Periodic fluctuation of atmospheric circulation

Recently, the periodic fluctuation of circulation in the westerly belt of middle and high latitudes in Europe and Asia is relatively large, which makes cold air activities more frequent, among which the blocking high pressure in Ural Mountain and the phased enhancement of East Asia trough have triggered three cold wave weather processes since late April.

2. The influence of La Ni? a event

Due to La Ni? a event, the meridional degree of the circulation in the middle and high latitudes in Europe and Asia is large and fluctuates obviously in stages, and the frequent activities of cold air have affected the climatic background conditions in China.

3. It's in the late spring and early summer

Every late spring and early summer, the precipitation in the central and eastern regions of China gradually decreases, which makes the cold air warm up faster during the intermission.

according to the recent weather forecast, it is predicted that on the 19th, the rainfall will spread eastward rapidly, and there will be moderate rain from west to east in the eastern part of southwest China, Jiangnan and South China, and there will be heavy rain and local heavy rain in central and southern Jiangnan, northern South China and Guizhou, so everyone should take precautions in advance.