Why is the weather so abnormal this year?

I believe that in recent days, everyone has been paying attention to the weather around China. In some places, frequent rainfall causes natural disasters such as heavy rain, mountain torrents and mudslides, while in other places, the temperature continues to be high, and the high temperature weather is extremely fierce. So why is the weather so abnormal this year? What is the abnormal weather in 2022? Let's look at the specific reasons.

Why is the weather so abnormal this year?

The abnormal weather in 2022 is an abnormal phenomenon, which is mainly caused by La Nina event and tropical SST anomaly. According to the forecast of China 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 Polanina phenomenon appears, so it may be affected by La Nina phenomenon in the summer of 2022. It is predicted that the climate situation in China will be strong in the later period, and there will be obvious regional and staged droughts and floods, with more extreme weather and rainy areas mainly concentrated in the northern region.

Specific causes of abnormal weather in 2022

1, the atmospheric circulation fluctuates periodically

Recently, the circulation in the westerly belt of middle and high latitudes in Europe and Asia fluctuates greatly in stages, and cold air activities are frequent. Among them, the blocking high pressure in the Ural Mountain and the phased enhancement of the East Asian trough triggered three cold wave weather processes since late April.

2. The impact of La Nina incident

Affected by La Ni? a event, the meridional circulation in the middle and high latitudes of Europe and Asia is large and fluctuates obviously in stages, and the frequent activities of cold air affect the climatic background conditions in China.

It was in late spring and early summer.

At the end of spring and the beginning of summer, the precipitation in the central and eastern regions of China gradually decreased, which made the cold air warm up rapidly during the intermission.

According to the recent weather forecast, it is predicted that the rainfall will expand eastward rapidly on 19, with moderate to moderate rain from west to east in the eastern part of southwest China, Jiangnan and South China, and heavy rain and local rainstorm in south-central Jiangnan, northern South China and Guizhou. Please take precautions in advance.