Abstract:The main characteristics of the general atmospheric circulation in January 2022 are as follow. There were two polar vortex centers in the Northern Hemisphere. The location of the East Asian trough was more eastward than in the same period of normal years. The southern branch trough was stronger during this month. The monthly mean precipitation over China was 18.2 mm, which is 25.5% more than normal (14.5 mm). However, during the month there were two widespread freezing rain and snow processes affecting the central and eastern parts of China, featured with a wide range of influence, heavy snowfall and complex phase patterns of rain and snow. Jiangxi, Hunan, Chongqing, Sichuan, Yunnan and Tibet etc. suffered at varying degrees from low temperature, freezing rain and snow disasters. Generally, cold air activities were weak during this month. The monthly mean temperature was -4.0℃, which is 0.8℃ higher than normal (-4.8℃). In addition, two fog-haze events occurred in this month.