Statistical data of smoke

According to the press conference of China Meteorological Bureau in February, 2065438+03, since the winter, smog has occurred frequently in most parts of central and eastern China, and the number of smog days is generally more than five days. According to meteorologists, there are three main reasons for smog weather:

1. In June, 5438+ 10, the cold air activity affecting China was weaker than normal, and the wind speed was low. The frequency of atmospheric stability conditions in most parts of central and eastern China is obviously high, especially in North China, which is as high as 64.5%, the highest in 10 years, and it is easy to cause pollutants to accumulate in the near-surface layer, thus leading to frequent haze weather;

Second, the high background concentration of aerosols in winter in China is conducive to the formation of smog;

Third, the smog weather will make the near-surface atmosphere more stable and aggravate the development of smog and air pollution. The formation of haze weather is not only affected by meteorological conditions, but also related to the increase of air pollutant emissions. It is suggested to further strengthen the control and protection of the atmospheric environment, especially to strengthen the multi-department consultation and linkage, improve the emergency emission reduction plan of atmospheric pollutants under static weather conditions, and prevent and control the occurrence of heavily polluted weather.

It is reported that since the winter, there have been 10 ~ 20 days in southern Hebei, Beijing, eastern Shanxi, Shandong, Henan, Anhui, Jiangsu, Shanghai, Zhejiang, Fujian, Hubei, Hunan, most of Jiangxi, western Guangdong, eastern Guangxi, Sichuan and Yunnan, among which most of Jiangsu has more than 20 days. Compared with the same period of normal years, there are more days in southern Hebei, Beijing, Tianjin, Shandong, northern Henan, Anhui, Jiangsu, Shanghai, Zhejiang, Guangdong and eastern Guangxi 1 day, including 3-8 days in Beijing, Tianjin, most of Anhui and Shanghai, and 8 days in northern Shandong, northeastern Anhui, most of Jiangsu, northern Zhejiang and southern Guangdong. In southern North China, central Jiangsu, eastern Sichuan, southwestern Chongqing and western Guizhou, the visibility is less than 1000m for 8 ~/5 days, and less than 500m for 5 ~ 12 days in southern Hebei, northwestern Shandong and eastern Sichuan.