Beijing will issue a "red warning" again, and the odd and even numbers will be restricted for four days from now on.

From 7: 00 today to 24: 00 on the 22nd, the "red warning" lasted for 89 hours, and the 22nd was the peak of this round of pollution. The city's primary and secondary schools and kindergartens "closed classes and kept learning"

Last night, in the north of Shuangjing Bridge in the East Third Ring Road, the roadside display showed "19 from 7: 00 to 24: 00, single-number vehicles are driving in the city". Beijing News reporter Lu She

At 7 o'clock yesterday, Beijing issued a red warning of heavy air pollution. The city will start the red early warning and emergency measures for heavy air pollution from 7: 00 today to 24: 00 on the 22nd, including the restriction of single and even numbers of motor vehicles in the city. The Municipal Education Commission issued a notice requiring primary and secondary schools and kindergartens to "suspend classes without stopping studying". This is the second time this month that Beijing has issued a red warning of heavy air pollution. 1 1 days ago, Beijing launched the first "red warning" in history, which lasted for 53 hours, and this red warning will last for 89 hours. It is expected that 22nd will be the peak of this round of pollution. Due to the influence of strong cold air, the smog weather will end on 23rd.

As of yesterday 14, 12 cities in Beijing, Tianjin and Hebei and surrounding areas have issued emergency warnings for heavy air pollution. Among them, Beijing issued a red warning; Tianjin started the yellow warning of heavy air pollution at 7: 00 today. Since 0: 00 yesterday, Hebei Handan and Baoding have started red warnings, and eight cities, Xingtai, Shijiazhuang, Hengshui, Langfang, Zhangzhou, Tangshan, Dingzhou and Xinji, have started orange warnings.

An atmosphere/scene

The pollution is expected to be the most serious next Tuesday.

Yesterday morning, the overall air quality in Beijing was good, but the observatory in the southern suburbs was already at a level of heavy pollution. At 8 o'clock yesterday, the hourly concentration of PM2.5 in the sixth district of the city was 60 μ g/m3, and that in the southeast was 173. Yesterday, Beijing as a whole was at a moderate to severe pollution level.

Starting today, the air quality will gradually reach and maintain the level of heavy pollution. The Central Meteorological Observatory predicts that from 20 to 2 1, there will be mild to moderate haze in Beijing and severe haze in the southern region. There will be moderate haze on the 22nd, severe haze in the south-central part, and the lowest visibility is about 1km, which will lead to persistent heavy pollution. The average peak concentration of PM2.5 in urban areas will exceed 300 μ g/m3, and the peak concentration of individual stations in southern areas will exceed 500 μ g/m3. The pollution level of this round is expected to exceed the pollution process from 6th of this month to 10.

According to the forecast of Beijing's environmental protection and meteorological department, the air diffusion conditions in Beijing will further deteriorate on the 20th, mainly due to southerly winds. The pollutants in Beijing area are easy to accumulate and have high humidity, and it is expected to be at the level of heavy pollution all day.

2 1 day, in the morning, affected by the weak high-pressure system, the humidity in some parts of the north decreased slightly and the diffusion conditions improved, but the diffusion conditions in urban areas and southern areas were general, and it is expected that the air quality in the whole city will remain at the level of severe pollution.

On the 22nd, controlled by the low-pressure system, mainly southerly wind, the humidity increased obviously again, and the inversion temperature and local diffusion conditions were poor. At the same time, regional high-concentration polluted air masses will continue to transmit and gather to Beijing, further pushing up the concentration level of PM2.5 in Beijing, and air pollution is expected to be at a severe to serious pollution level.

At present, it is expected that there will be a strong cold air affecting Beijing in the early morning of the 23rd, when the air quality will gradually improve from north to south.

Embark on a journey

The tail number "1" will be continuously restricted next Tuesday and Wednesday.

From 7: 00 today to 24: 00 on the 22nd, on the roads in the administrative area of Beijing, motor vehicles were driving for one day and two days according to the tail number of the license plate.

The traffic control department explained the four-day limit in detail, and still adopted the rules of single-day driving and double-day driving. The odd numbers are 1, 3, 5, 7 and 9, and the even numbers are 2, 4, 6, 8 and 0. The "2002" number plate and the motor vehicles with English letters at the end of the number plate are managed as even numbers. In four days, even and odd motor vehicles can't run for two days respectively.

It should be noted that since the red warning started at 7: 00 today, the time limit today is from 7: 00 to 24: 00. On Sunday, next Monday and next Tuesday, the restricted time is from 3: 00 to 24: 00 every day, and the restricted range is the roads within the administrative area of this Municipality.

The most unfortunate thing about this restriction is the motor vehicle with the tail number "1". After the "red alert" was lifted on Wednesday, traffic restrictions were resumed for five days. On the same day, motor vehicles with the tail numbers 1 and 6 cannot drive on the road, and the odd number is limited on Tuesday. Vehicles with the tail number 1 will be restricted for two consecutive days next Tuesday and next Wednesday.

school

Schools need to ensure that children are supervised.

The Municipal Education Commission issued a notice yesterday that during the "Red Warning" period from today to the 22nd, primary and secondary schools, kindergartens, children's palaces, secondary vocational schools and off-campus educational institutions will be closed, and colleges and universities will stop sports activities, community activities and social practice activities.

During this period, primary and secondary schools and kindergartens are "closed". Teachers should rationally adjust teaching methods, flexibly arrange learning contents, and guide students to make full use of the network platform and digital resources of Beijing Digital School to carry out autonomous learning.

The relevant person in charge of the Municipal Education Commission said that in view of the problems found in the implementation of the first red warning, it is emphasized that all primary and secondary schools and kindergartens should arrange the class teacher to contact each student, parent or guardian to confirm that the child is supervised. For children who have no care conditions at home and need to be sent to school, the school should ensure that the study and life of the students at school are properly arranged on the basis of confirmation with their parents.

Different from the "red warning" for the first time, the notice issued by the Municipal Education Commission also clarified that individual private schools and international schools with protective conditions can be flexibly arranged according to the situation.

In addition, according to the introduction of the Municipal Children's Palace, after the launch of the "Red Warning", the large-scale celebration performance originally planned for the weekend was cancelled, and the art and dance class will also be suspended according to the red warning requirements of the Municipal Education Commission. Future courses will be postponed.

Q 1 Why did the blue sky issue a "red warning" yesterday?

Yesterday, the south of Beijing was heavily polluted, but the air quality in the north was excellent. Today, especially in the first half of the year, the overall air quality in Beijing will be at a moderate pollution level. Why was the red warning of heavy air pollution issued at 7: 00 yesterday and implemented at 7: 00 today?

Wang Bin, director of the emergency department of Beijing Environmental Protection Bureau, said that according to the forecast, the air quality in Beijing will gradually reach the level of heavy pollution this afternoon, and it will last for several days, so a red warning of heavy pollution was issued. According to the emergency plan for heavy air pollution in Beijing, the orange warning and the red warning should be released to the public 24 hours in advance. It was released at 7 o'clock yesterday and started at 7 o'clock today, which meets the requirement of "24 hours in advance".

Wang Bin said that when the compulsory emission reduction measures of "Red Warning" were started at 7: 00 this morning, the city might not have reached the level of heavy pollution. However, starting the red warning emergency measures half a day in advance is conducive to reducing emissions, reducing the accumulation rate of pollutants, reducing the peak pollution, and also helping to remind the public to make health protection and travel arrangements in advance.

Question 2: Why did the smog kill the carbine again?

Since yesterday, the weather situation in North China has stabilized and there has been regional air pollution. Besides Beijing, Tianjin and Hebei are also affected by pollution.

Affected by this, the weather in Beijing will tend to be calm, the cold air will weaken, the humidity will increase, the temperature will rise and the inversion temperature will increase. Therefore, starting from today, the air quality will gradually reach and maintain the level of heavy pollution.

The environmental protection department said that the heavy air pollution has the characteristics of "large scope, wide spread and long duration", covering the whole North China region and belonging to regional pollution. Due to the unfavorable overall diffusion conditions and relatively slow transmission speed, Beijing will slowly and continuously pollute from south to north.

Question 3: Is the air pollution getting worse this winter?

Since Beijing has an emergency plan for heavy air pollution, Beijing has never launched a red warning before, but it has been launched twice this month, with an interval of 1 1 day. Is the air pollution in Beijing getting worse this winter?

Wang Bin said that starting the red warning does not mean that the air quality is getting worse. In March this year, after the revision of the emergency plan for heavy air pollution in Beijing, the threshold for starting the red warning was greatly reduced. Previously, it was required to start the red warning after three consecutive days of serious pollution at level six. Now, serious pollution at level five can be started after more than three days. In other words, the starting threshold of red warning is equivalent to the starting standard of orange warning or even yellow warning in the original plan before revision.

Wang Bin said that up to now, Beijing has launched the early warning of heavy air pollution 16 times this year, with 35 days of heavy air pollution, still lower than last year, when the days of heavy air pollution were 45 days.

■ Analysis

The National Climate Center analyzes the causes of recent smog in Beijing, Tianjin and Hebei.

The wind is light, the humidity is high, the weather is stable and there are many days.

(The above answers were published on 2015-12-19. Please refer to the actual situation for the current purchase policy. )

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