Beijing managing pollution gradually heavy southern region up to moderate pollution-jessica rabbit

Beijing managing pollution gradually heavy Southern moderate pollution up to the original title: second pollution is getting heavy Beijing morning news (reporter Wu Tingting) the monkey spring, although there are fireworks infestation, but the big wind helped Beijing pollutants, Lunar New Year’s day of the city in large parts of air quality. City Environmental Monitoring Center said, compared with last year, the average concentration of PM2.5 on New Year’s Eve increased by more than 50%. Because the ground is new year’s Eve night wind, significantlydeteriorated pollution diffusion conditions, the concentration of PM2.5 reached the peak after fall more slowly, after midnight on New Year’s Eve, which is 1 in the morning to 6 in the morning when the PM2.5 concentration was maintained at 460 micrograms per cubic meter or more. City environmental monitoring center introduced, compared with the same period in 2015, the new year’s eve before midnight PM2.5 concentration continued to rise, after 23, the rise rate is relatively rapid, the peak concentration increased by 69%. Affected by the diffusion conditions, the concentration of PM2.5 decreased slowly after the new year’s Eve, and the average concentration of PM2.5 increased by 53% from 18 to 6 on the eve of new year’s eve. Last night, the city continued the favorable diffusion conditions during the daytime, and the air quality was excellent. In the daytime, the pressure field becomes weaker and the wind direction is southerly, and the diffusion conditions tend to be unfavorable. It is expected to be lightly polluted and moderately polluted in the south. After the third year to the fifth day of the spread of pollution condition is not optimistic, expected 10 to 4 moderate pollution, 11, 5 12, 4 heavy pollution, moderate pollution. Editor: Joe’s SN098

北京今起污染渐重 南部地区可达中度污染   原标题:初二起污染渐重   北京晨报讯(记者 吴婷婷)猴年新春,尽管有烟花爆竹的侵扰,但北风帮了京城大忙吹散了污染物,大年初一白天全市大部分地区空气质量优良。市环保监测中心表示,与去年相比,除夕夜PM2.5平均浓度上升五成以上。   由于除夕夜间本市地面为静风,污染扩散条件明显转差,PM2.5浓度达到峰值后的回落速度较为缓慢,除夕后半夜,也就是凌晨1时到清晨6时,全市PM2.5浓度始终维持在460微克 立方米以上。   市环保监测中心介绍,与2015年同期相比,今年除夕前半夜PM2.5浓度呈持续上升趋势,23时之后上升速度较为迅速,峰值浓度同比上升69%。受扩散条件不利影响,除夕后半夜PM2.5浓度下降缓慢,除夕夜18时至初一6时,PM2.5每小时平均浓度同比上升53%。   昨天夜间,本市延续白天时段的有利扩散条件,空气质量优良。今天白天开始,气压场转弱,风向转为偏南风,扩散条件趋于不利。预计为轻度污染级别,南部地区可达中度污染。此后初三至初五的污染扩散条件不太乐观,预计10日为4级中度污染,11日5级重度污染,12日4级中度污染。 责任编辑:乔雷华 SN098相关的主题文章: