一次受夏收作物秸秆焚烧影响形成灰霾天气的机理分析

Analysis on the Mechanism of A Haze Episode Caused by Straw Burning of Summer Harvest

针对2012年6月中旬苏北地区的一次大面积夏收作物秸秆焚烧,通过对能见度、空气污染指数、可吸入颗粒物和降水中钾离子等数据的分析,并结合对气象条件的分析,初步揭示了秸秆焚烧对空气污染产生的影响机理,指出由秸秆焚烧产生的气态颗粒物在不利扩散的气象条件下会形成灰霾天气。

Aiming at once large areas straw burning of summer harvest during the second ten-day period of June 2012 in the north of Jiangsu Province, through analysis of the visibility, air pollution index, PM10 and K^＋ of rain, and combining the analysis of meteorological condition, the influence mechanism of straw burning on air pollution was revealed preliminary, it was pointed out that the small particulate of the straw burning will cause haze under the unfavorable diffuse meteorological condition.