Why is the air quality in Chongqing better than that in Chengdu?

The wind is light and the clouds are light, and the sun is just right. Where did you sunbathe this afternoon? Someone said, "It's great that Chengdu people can have some warm sunshine in winter."

Today's grandson must be a "hothead". At noon, the outdoor temperature soared to 16, as cold as early spring. You must feel "warm" in the sun.

In this way, under the "baking" of the warm sun, we sent away 1 1 month. Tomorrow we will celebrate the last month of 20 17. The Chengdu Meteorological Observatory said that the sunshine will continue tomorrow. Although the sunshine on cloudy days is subtle, it can be brilliant in winter with a little sunshine, right? At the same time, the Municipal Meteorological Observatory reminds everyone that there may be fog in some places in the morning, so pay attention to traffic safety.

In addition, the monitoring data of Chengdu Environmental Protection Bureau showed that 15 consecutive excellent days in Chengdu appeared on1October 24th, which also marked that the excellent days of air quality in Chengdu in 20 17 reached the best record in five years-224 days. "This is the best level in Chengdu's history since the implementation of the new ambient air quality standard ——AQI (air pollution index) on 20 13. Although the year of 20 17 has not ended, it has been one more day than the year of 20 14, which has always maintained an excellent number of days. " The staff of the Municipal Environmental Protection Bureau said.

In fact, the change value of PM2.5, the primary pollutant of air quality in autumn and winter, also confirms the change of air quality. It is understood that from 20 13 to 20 16, the concentration of PM2.5 in Chengdu was 97, 77, 64 and 63 μ g/m3 respectively, showing a downward trend year by year. The concentration of PM2.5 in 20 16 years decreased by 35. 1% compared with that in 20 13 years. As of165438+1October 24th, the average concentration of PM2.5 this year has dropped to 5 1 μ g/m3, which is 10.5 percentage point lower than the same period last year.

However, what is the trend of air pollution index in the last month of 20 17? According to the forecast of meteorological department, the average temperature in most places in June and February of 5438 was higher than that in the same period of history, and the precipitation was less than that in the same period of history. Generally speaking, the conditions for pollution diffusion are still unfavorable. "We must be psychologically prepared to fight a protracted war and fight a tough battle."

According to the air quality forecast of Chengdu, the possibility of near-surface inversion in Chengdu will change from small to large from 65438+February 1 to 65438+February 3, with low wind speed, stable atmospheric stratification and medium deviation of meteorological diffusion conditions.

Specific weather forecast in the province

On the evening of 30th, the cities in the basin were cloudy with scattered or sporadic light rain in Bazhong, Dazhou, Nanchong, Guang 'an, Suining, Ziyang and Ya 'an, as well as in Chengdu, Leshan, Yibin and southern Luzhou. There are showers (snow) in the south of the western Sichuan Plateau and the northeast of Liangshan Prefecture, and the rest of the western Sichuan Plateau and Panxi area are cloudy.

65438+February 1 day: the cities in the basin turned cloudy, with sporadic rain in southern Ya 'an, Leshan and Luzhou, and fog in the central and northern parts of the basin in the morning; Cloudy weather prevails in the western Sichuan Plateau and Panxi area, with scattered showers (snow) in the south of Ganzi Prefecture.

1 night to day 2: the cities in the basin are cloudy and cloudy, some parts of the central and northern parts of the basin are foggy in the morning, and some parts of Ya' an, Leshan, Zigong and Luzhou have sporadic rain; Cloudy weather prevails in the western Sichuan Plateau and Panxi area, with scattered showers (snow) in the south of Ganzi Prefecture.

During the day from the evening of the 2nd to the 3rd: the cities in the basin are cloudy on cloudy days, with light rain or sporadic light rain in Mianyang, Ya 'an, Leshan, Yibin, Luzhou and Nanchong; The western Sichuan Plateau and Panxi area are cloudy.

Within 24 hours, the lowest temperature in the basin is 5-10; Maximum temperature 12- 14.

Tianfu Morning Post reporter Zhu Jiahui