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Sichuan Online reporter Wu Yafei
According to the results of the joint consultation between the Sichuan Provincial Ecological Environment Monitoring Station and the Provincial Meteorological Observatory, due to the impact of unfavorable weather conditions superimposed on polluting emissions, the diffusion conditions have further deteriorated. The Chengdu Plain, southern Sichuan, and most cities in northeast Sichuan have experienced mild to moderate pollution. There is a risk of heavy contamination.Starting at 0:00 on December 26, the three cities of Nanchong, Guang’an and Dazhou can start the orange warning for heavy pollution weather conditions, the three cities of Bazhong, Neijiang and Luzhou can start the yellow warning, and the three cities of Chengdu, Zigong and Yibin can be upgraded from the yellow warning to the orange warning. .
In accordance with the unified arrangement and deployment of the province, and in accordance with the relevant provisions of the “Chengdu High Pollution Weather Emergency Plan (Revised 2020)”, Chengdu has decided to update the yellow warning of high weather pollution to the orange warning starting at 0:00 on December 26, 2020.
After the orange warning for high pollution weather conditions is activated, pay attention to these four points:
1. Built-up areas of central city and suburban cities: construction waste transportation vehicles (including engineering mud) (except for key projects and emergency rescue engineering construction support vehicles approved by the municipal government) and the transportation of coal, sand and gravel, bagged cement, etc., are prone to dust. Transportation vehicles are closed 24 hours a day.
2. The area within the Fourth Ring Road (Chengdu Ring Expressway, excluded), from 06:00 to 22:00 Monday through Friday: gasoline vehicles with emission standards below National III (excluding) and National III (excluding) Diesel vehicles with the following emission standards are prohibited (except special vehicles) Other vehicles (including vehicles with temporary plates) will be restricted by the last Arabic number on the motor vehicle plate. That is, there are no restrictions during holidays (weekends from December 26 to 27).
3. Freight vehicles with a large (yellow) license plate and an approved load of more than 5 tons (not included) are prohibited from entering the Fourth Ring ring area (Chengdu Ring Expressway, not included) 24 hours a day. day.
4. Increase the frequency of operation of public transport, such as city buses and the subway; the area within the Fourth Ring Beltway (Chengdu Ring Expressway) (including some stations within the Fourth Ring Beltline) is free with Tianfu Pass. 20% discount on subway trips with the Tianfutong card.
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Since 00:00 on December 19, 2020, Chengdu started the heavy pollution weather yellow alert, the whole society has actively responded, all levels and departments have strengthened early warning management and control in accordance with the requirements of the plan, and all companies and institutions have actively implemented the relevant emission reduction measures. During the yellow warning period, the city’s average daily earthmoving suspension of more than 3,000 construction sites, a total of 293 illegal construction sites were investigated and dealt with, the average daily industrial restriction was restricted to nearly 3,000 businesses and 3,143 companies were cumulatively inspected. Traffic flow in the city during business days was reduced by approximately 3.4% compared to before the 4.5% warning. By means of a quick quantitative estimation of the effects of the previous measures, from 19 to 23, the average daily reduction rates of PM10, PM2.5, SO2, NOX and VOCS emissions throughout the society were 28%, 23% 11%, 8% and 18 respectively. %, there were no days of moderate contamination and 3 days to reach the standard on days 19, 20 and 22.
According to the latest prediction results from the Municipal Academy of Environmental Sciences, on the 26th there was a weak north wind at the lower level and the sky conditions slightly improved; on the 27th the entire floor was dominated by south winds, the sky conditions were bad, the humidity increased and the diffusion conditions deteriorated; Cold air began to be affected in the afternoon of the 28th, and the temperature and pressure increased significantly and the diffusion conditions gradually improved; cold air continued to be affected from 29 to 31, mainly in good and good weather, with high speed winds. It is estimated that on the 26th there will be light to moderate contamination; 27-28 is expected to be moderate to heavy contamination; 29 to 31 is expected to be excellent or good.
The contamination process continues, on days 27 and 28, the particulate material accumulates accelerating and the risk of strong contamination is greater. This also urges the general public to strengthen the early warning response, green travel, low-carbon living, most companies and building units strictly implement the primary responsibility of pollution prevention, and the The city’s “three great battles” office will organize municipal departments and districts (cities) and counties to continue to strengthen the management and control of early warnings, Vigorously reduce the intensity of pollutant emissions, slow down the rate of accumulation of contamination and maintain the bottom line without serious contamination.
