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The author:(作者)qqpublished in(发表于) 2014/7/5 8:36:03 Beijing had high temperature smog days， reproduced throughout the city heavily polluted
CNS, Beijing, July 4 (reporter Yin Li)-under the influence of unfavourable terms of proliferation, Beijing urban air quality is two days in a row in high levels of pollution levels. Beijing environment protection monitoring center predicted that based on existing weather conditions, air quality will not be a full-fledged turnaround, coming two days still have mild to moderate pollution.
After high temperatures during late June and into July, Beijing has again ushered in thunderstorms. But the cool weather did not last long, Beijing recently suffered another haze enveloped in yellow all day. The diffusion conditions remain unfavourable, bringing the air quality as much again to high levels of pollution levels.
4th morning, Beijing was shrouded in a light fog, visibility was down to less than two kilometers in some sections. Sultry and humid weather, which many people lamented that "the sauna days are here again." Due day maximum temperatures reached 31 c, not many pedestrians wearing masks on the streets.
4th at 14 o'clock, Beijing air quality state diagrams show the fact sheet, with the exception of two sites appear as missing data, and 35 stations in the city had 19 in five heavily polluted site, located in Tongzhou in the East station point appears as a six-level pollution levels, the primary pollutants for PM2.5. Among them, heavily polluted sites are located in downtown, most PM2.5 concentrations exceed 150 micrograms per cubic meter. The entire process from downtown to suburban pollution decreasing trend.
Environmental experts say that for two consecutive days of heavy pollution weather occurs because the water in the atmosphere, saturated humidity as high as 90%, lead directly to local pollutants cannot be effectively spread. Emissions of pollutants from vehicle exhaust in urban area, but also makes the urban polluting heavier than the suburban.
Beijing environment protection monitoring center released information that is expected today for three days, Beijing's air humidity, unless there is strong rainfall, or pollutant dispersion conditions there will be no significant improvement, air quality will be dominated by mild to moderate pollution. (End)
(Original title: subject to high temperature smog tianquan Cheng reappearance of severe contamination)
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