【摘要】 雾是北京地区秋冬季节常见的一种灾害性天气 ,对大气中污染物的扩散极其不利。该文着重分析了 1 998年北京地区出现大雾天气时的污染物浓度变化以及形成大雾的气象条件。更多还原

【Abstract】 Fog is one of the severe weather events in autumn and winter in Beijing, and restrains the diffusion of the pollutant in the air.The air pollution concentration change during heavy fog days in Beijing area and the weather conditions producing heavy fog were analysed.更多还原