The air quality in Beijing during the Spring Festival was improved by 2015 over the same period of t-naughty怎么读

The Spring Festival this year, Beijing air quality improved significantly compared to the same period 2015 – Sohu news Beijing News News (reporter Deng Qi) Beijing Municipal Environmental Protection Bureau informed today, during the 2016 Spring Festival (February 7th – February 13th is the beginning of the six month of the new year’s Eve) compared with the same period of 2015, the overall air quality is improved obviously, performance for the PM2.5 during the 2016 Spring Festival, the average concentration of 98 micrograms cubic meters, compared to 2015 during the Spring Festival of 117 micrograms per cubic meter down 19 micrograms, a decline of about 16%. In addition, during the Spring Festival this year, Beijing air quality days for 3 days, exceed the standard daily for 4 days, including 2 days to reach the five level of severe pollution. In severe pollution days from last year during the Spring Festival 5 days reduced to 3 days during the Spring Festival this year, has decreased significantly. Analysis of the Municipal Environmental Protection Bureau said that the main reason for an improvement in air quality during the Spring Festival in 2016, is more favorable conditions for the spread of contamination and fireworks decreased. In the aspect of pollution diffusion conditions, in addition to unfavorable diffusion conditions on February 11-12 have low pressure, humidity, temperature inversion, the other time in Beijing is mainly affected by the cold north wind, pressure control, overall diffusion more favorable conditions. In terms of the influence of fireworks, according to preliminary statistics, during the 2016 Spring Festival fireworks sales fell by about 20~30%, firecrackers and fireworks during the Spring Festival volume decreased significantly, effectively reducing the adverse effects of fireworks on air quality.

今年春节北京空气质量同比2015改善明显-搜狐新闻  新京报快讯(记者邓琦)北京市环保局今日通报,2016年春节期间(2月7日除夕—2月13日正月初六)与2015年同期相比,空气质量总体有较明显的改善,表现为2016年春节期间PM2.5平均浓度为98微克 立方米,较2015年春节期间的117微克 立方米下降19微克,降幅约16%。  此外,今年春节期间,北京空气质量优良日天数为3天,超标日天数为4天,其中2天达到五级重度污染。中重度污染日也从去年春节期间的5天减少为今年春节期间的3天,有明显下降。  市环保局分析称,2016年春节期间空气质量同比改善的主要原因,是污染扩散条件较为有利以及烟花爆竹燃放量下降。在污染扩散条件方面,除2月11-12日出现低气压、湿度大、逆温的不利扩散条件,其它时间北京主要受冷高压控制,偏北风,总体扩散条件较有利。在烟花爆竹燃放影响方面,据初步统计,2016年春节期间烟花爆竹销售量同比下降幅度约20~30%,春节期间烟花爆竹燃放量明显下降,有效降低了烟花爆竹燃放对空气质量的不利影响。相关的主题文章: