Beijing has 36 days of heating and 32 days of sunny days, which is almost the same as the non-heating season. Is it true?

"Blue sky" and "haze-free moon" are high-frequency words used by netizens to describe the recent weather in Beijing. Many citizens feel that the winter in Beijing this year is different from previous years, with more blue sky and better air. According to the latest data obtained by the reporter from the Municipal Environmental Protection Bureau yesterday, during the 36 days from the heating season of1October15 to the heating season of 65438+20 in February, the air quality in Beijing was excellent for 32 days, the air compliance rate was as high as 89%, and the average concentration of PM2.5 was only 38 μ g/m3, which was comparable to the non-heating season! So far this autumn and winter, there have been only four days of heavy pollution, less than half of that in previous years.

The concentration of PM2.5 is similar to that in non-heating season.

In the heating season in previous years, there was smog every three to five days. Since the beginning of autumn and winter this year, there have been only four days of heavy pollution in Beijing, especially after the heating season, only 1 day of heavy pollution has appeared. Heavy pollution averaged seven or eight days in the same period in history, and two days were the heaviest level of serious pollution.

Xin Wang, an engineer of the Municipal Environmental Monitoring Center, said that there are only a handful of heavy pollution in autumn and winter this year, and the interval between heavy pollution is also relatively long. Judging from the public perception, the air quality is good.

The data show that the latest heavy pollution occurred on February 2, 65438, and the air was fine on the following 18 days, with the first-class fine weather 15 days. Further on,1October 6 165438+ and1October 26 -27 10 were heavily polluted. However, during these times, the concentration of PM2.5 is around 200 μ g/m3, which is considered as a relatively light and heavy pollution. "This kind of air quality was unimaginable in the heating season in previous years." Xin Wang said.

The reporter learned that since the beginning of the heating season, as of February 20 10, the average concentration of PM2.5 in this city was only 38 μ g/m3. Xin Wang said that the average monthly concentration value in a non-heating season is almost the same. In the same period of the past four years, the average has reached 93 μ g/m3.

According to the annual data, the number of days with good air quality reached 2 18 this year, 26 days more than last year's 192 days. The days of heavy pollution decreased from 35 days last year to 2 1 day, a decrease of 14 days.

Strong winds help the pollutants to dissipate.

The improvement of air quality is the result of "God help" and "human efforts".

According to reports, cold air activities in Beijing are more frequent this winter, with less rain and dry weather. These factors are not conducive to the formation of smog, and the meteorological conditions are generally favorable. The data show that from June 65438+February to June 19 this year, the average wind power in Beijing reached 2.3 1 m/s, which was higher than 2. 12 m/s in 20 15 years and/in 20 16 years. Meteorologists said that strong wind and good air diffusion conditions are conducive to the reduction of fog and haze. In the case of frequent cold air, coupled with the gradual advancement of air pollution control in Beijing, Tianjin and Hebei in recent years, the probability of blue sky in Beijing in June+February this year is high.

The control effect of "scattered pollution" is obvious

The key to improving air quality still depends on "human efforts". With the continuous promotion of the "Ten Articles of Atmosphere" and the five-year clean air action plan, in autumn and winter this year, under the unified arrangement of the Ministry of Environmental Protection, our city adopted the comprehensive air pollution control action in autumn and winter, and each district took turns to carry out the special law enforcement action of "breaking up pollution control", which can be said to be unprecedented in emission reduction.

This year's pollution reduction measures, especially the treatment of coal-burning and "scattered pollution" enterprises, are directly linked to the reduction of sulfur dioxide and PM2.5 concentrations. So far, the reduction rate of sulfur dioxide in this city has reached 20% this year, and PM2.5 has also decreased by 18.6% compared with the same period of last year, which is very obvious. At the same time, the improvement of air quality is also the benefit release of regional coordinated emission reduction and various pollution control and emission reduction measures taken by Beijing for many years.

In addition, due to the continuous good air quality in February of 65438, as of February 20, 65438, the average concentration of PM2.5 this year decreased by 1 μ g/m3 compared with the statistical data in October of165438+/kloc-0, and now it is at the level of 57 μ g/m3. According to the five-year clean air action plan, by the end of 20 17, the concentration of PM2.5 in this city will drop to about 60 μ g/m3.