基于地面监测数据的2013年京津冀地区PM_(2.5)变化

The PM_(2.5) changes based on ground monitoring data of Beijing,Tianjin and Hebei area in 2013

文章对2013年京津冀地区81个国家级空气质量自动监测站点的PM_(2.5)逐时数据进行分析,从季节、月份尺度上探讨PM_(2.5)的时间动态变化。结果表明,2013年京津冀地区PM_(2.5)浓度由高到低的季节依次均为冬季>秋季>春季>夏季,地区分布为河北>天津>北京,与区域内冬季取暖、化石燃料的燃烧和燃煤关系密切;2013年PM_(2.5)月均浓度变化一致,1月份、2月份、12月份相对较高,3月份以后逐步下降。

This article analyzed hourly PM（2.5）data of 81 na tional air quality monitoring sites of Beijing,Tianjin and Hebei region in 2013,and explored the dynamic changes of PM（2.5）from seasons and months.The results showed that PM（2.5）concentrations in Beijing,Tianjin and Hebei region from high to low of season were Winter,Fall,Summer,Spring.Regional distribution are Hebei,Tianjin,Beijing,the result was closed to heating in winter,burning of fossil fuels and coal;In 2013,the average monthly change of PM（2.5）was consistent,but the January,February and December was relatively high,then gradually decline in March.