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秋冬雾霾季9月份开启 专家解读今年为何比以往来的更早一些

2017-09-03 06:40:49   央广网

央广网北京9月3日消息(记者杜希萌 王楷)据中国之声《新闻纵横》报道,昨晚(2日)6点,中央气象台继续发布全国24小时霾预报。预报显示,从昨晚(2日)8点到今晚8点,北京、天津、河北、太原等地有轻度到中度霾。

这两天,北京的天气的确不太给力,城市上空覆盖住一层雾蒙蒙的的灰色,让人格外头疼的雾霾天,又来了。未来几个月,北方的雾霾能否比以往有所好转?为了减少空气重污染过程的出现,社会各方又做出了哪些努力?

刚进入9月,可能很多北方的朋友就感慨,雨下了、天凉了。然而,相伴而来的还有京津冀地区的雾霾。往年,秋冬常见的雾霾天气,今年似乎来得更早了一些。

来自于中央气象台的消息,2日到到5日白天,北京、天津西部、河北中部、山西中部等地大气扩散条件一般,上述地区有轻度霾,局地中度霾。5日开始,受降水和弱冷空气影响,上述部分地区空气污染扩散和清除条件逐渐转好。此外,上述地区局夜间到早晨有轻雾,局地有大雾。

1日下午,中国环境科学研究院大气环境首席科学家柴发合接受央广采访时表示:主要是大气湿度在增加,基本上处在一个静稳的状态。特别是在早上,可能会生成逆温,对污染物扩散不利。但是到了中午前后,对流加强,问题马上就可以解决。

2日下午,北京市政府紧急召开专题会,研究部署近期污染天气应急防治工作。据北京环保局通报,1日北京局地达重度污染,4日之前污染扩散条件不利,预计将出现连续几天中度污染。眼下这轮雾霾天气因何而起,是否来得更早了一些呢?

柴发合:基本是有规律的。一个是秋冬转换季节,每年十一前后,差不多都会有一个比较重的污染过程。今年有没有,值得我们重视。第二个是采暖季开始,东北,比北京提前半个月,特别是起炉阶段,每次都会发生重污染过程。

近日,环保部会同发改委、财政部等十部委和京津冀晋鲁豫等六省市共同发布《京津冀及周边地区2017—2018秋冬季大气污染综合治理攻坚行动方案》。此次攻坚行动方案的重点是,对今年十月到明年三月的大气污染治理工作,“量化目标,细化问责”。

环保部大气环境管理司司长刘炳江:第一次设定了秋冬季下降的比例,以往都是没怎么下降,这次设双下降15%。PM2.5浓度下降15%,重污染天数下降15%。对各个城市这次第一次都量身定做了可量化的任务量,任务也都具体到了区县镇乡,都是定位下达的。

按照方案要求,本月底京津冀及周边区域已核实的应淘汰的,所有涉大气污染物排放的散乱污企业,一律关停;此外,纳入2017年度淘汰清单中的4.4万台燃煤小锅炉十月底前也要全面“清零”。同时,石家庄、唐山、邯郸、安阳等重点城市,采暖季钢铁产能限产50%,建材行业等也将实施错峰生产。这些措施能否避免今冬再次出现“重污染天气频发”的情况?

刘炳江:今年大气污染治理攻坚行动安排的大气污染物减排任务量是去年的两倍到三倍之间,比如说去年只完成了80万户的电代煤、气代煤的改造,今年至少是300万户。减排量放在那,如果天气稍微有利点儿,我相信今年空气质量应该会比去年好一些。

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