Abstract:The main characteristics of the general atmospheric circulation in February 2022 are as follows. There were two polar vortex centers in the Northern Hemisphere, with the subcenter located from the Sea of Okhotsk to the North Pacific Ocean which was stronger compared to the same period in history. The atmospheric circulation in the middle and high latitudes of Eurasia gradually changed from the “two troughs and a ridge” type to the “one trough and one ridge” type. The ridge between Ural Mountains and Bajkal was stable and maintained, and the middle and high latitudes of China were in the frontal zone in front of the ridge, with more active trough and cold air activities. The southern branch trough was more frequent in southern China with intensity close to that in normal years, bringing more rain and snow to the region. In February, cold air was active in China, while there were few strong cold air processes. The monthly mean temperature is -3.2℃, 1.9℃ lower than normal (-1.3℃). The monthly mean precipitation is 25.5 mm, 58% more than normal (16.1 mm). Meanwhile, in mid-to-late February, a persistent low-temperature rainy and snowy weather process occurred in the southern part of China.