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(1)近百年来,全球经历了两次以气候变暖为特征的重大变化,灰霾现象就是其中之一。灰霾的成因,主要与化石能源的燃烧相关。人类活动排放颗粒态污染物,比如水泥厂、发电厂都会直接排放颗粒物,汽车尾气会直接排放黑碳粒子,人类活动也会排放二氧化硫、氮氧化物、挥发性有机物等气态污染物,造成能见度的恶化,也就造成了所谓的灰霾天气。
(1) Haze has been one of the major changes that the world has experienced over the past century, characterized by global warming. The cause of the haze is mainly related to the burning of fossil fuels. Human Activities Emissions of particulate pollutants, such as cement plants and power plants, will directly emit particulate matter. Vehicle exhaust will directly emit black carbon particles. Human activities also emit gaseous pollutants such as sulfur dioxide, nitrogen oxides and volatile organic compounds, resulting in visibility Deteriorated, it also caused the so-called haze weather.