Traditional Culture Encyclopedia - Weather forecast - The weather in the whole country is abnormal this year. What is this?
The weather in the whole country is abnormal this year. What is this?
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 La Nina 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.
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 them, the blocking high pressure of Ural Mountain and the periodic enhancement of East Asia trough triggered three cold wave weather processes since late April.
Impact of La Ni? a event: Due to the impact of La Ni? a event, the longitude of 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.
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