受沙尘影响 30日北京PM10浓度预计有短时轻中度污染|国产精品成人3p一区二区三区

  中新网北京11月29日电 (记者 陈杭)北京市生态环境监测中心官方微博29日通报称,近期受强冷空气频繁影响,中蒙边境沙源地频繁起沙,在偏西偏北气流作用下,沙尘大范围扩散并持续南下波及我国西北、华中、华北、华东的大范围地区,受沙尘主体影响的城市PM10浓度短时激增达到重度-严重污染水平。预计北京市30日白天受沙尘影响,PM10可能短时达到3-4级轻度-中度污染。

  北京市生态环境监测中心表示,29日午后至夜间北京市受沙尘回流影响,预计PM10浓度有所上升。29日13时,受前期回流沙尘滞留影响,京津冀区域PM10浓度整体以3级轻度污染水平为主,北京市PM10浓度为2级良。

  根据最新预报结果显示,29日午后至夜间,北京市地面低压系统控制为主,偏南风,周边区域沙尘可能回流,预计北京市PM10浓度有所上升,有达到2-3级良-轻度污染的风险。

  该中心称,受新一轮外来沙尘影响,预计北京市30日白天PM10短时可达到3-4级轻度-中度污染。30日凌晨至上午,西北强冷高压影响北京市,有强偏西北风,预计上游沙尘天气将造成一定影响,PM10浓度短时可达到3-4级轻度-中度污染水平;下午沙尘影响逐渐减弱,预计空气质量明显改善。(完)

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