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基于AOD数据的秸秆焚烧监测

DOI: 10.6046/gtzyyg.2015.02.21, PP. 133-138

Keywords: 秸秆焚烧,可吸入颗粒物(PM10),气溶胶光学厚度(AOD),轨迹分析

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Abstract:

秸秆焚烧会增加可吸入颗粒物(particulatematterwithparticlesizelessthanorequalto10microns,PM10)的浓度。首先,分别从秸秆焚烧火点、10m风场、气溶胶光学厚度(aerosolopticaldepth,AOD)3个方面对发生在安徽及周边省市的2009年6月1—9日PM10污染事件进行机理分析;其次,利用拉格朗日混合单粒子轨迹(hybridsingleparticlelagrangianintegratedtrajectory,HYSPLIT)模式对2009年6月5日阜阳市出现的PM10污染事件进行后向轨迹分析;最后,对火点密度与AOD值进行相关分析。结果表明:秸秆焚烧火点、10m风场及AOD之间存在一致性,这表明使用AOD数据对秸秆焚烧进行监测是可行的;2009年6月5日阜阳市出现的PM10污染事件中有外来污染物的输入,污染物来自阜阳西部、河南中部、东南部和湖北北部、东部,因此很有必要加强区域秸秆焚烧的联防联控;火点密度与AOD值之间有正相关性,这表明秸秆焚烧可显著提高区域的AOD值。

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