【摘 要】
：
本文利用2013～2016年最新的合肥城市大气PM2.5监测数据,对PM2.5浓度变化特征进行分析,结果表明:合肥城市大气PM2.5浓度具有不同时间尺度上的显著特征:秋冬污染重,春夏污染轻;
【机 构】
：
安徽省环境科学研究院,合肥230071合肥工业大学,合肥230000
【出 处】
：
第二十届SO2、NOX、PM2.5、Hg污染控制技术研讨会
论文部分内容阅读
本文利用2013～2016年最新的合肥城市大气PM2.5监测数据,对PM2.5浓度变化特征进行分析,结果表明:合肥城市大气PM2.5浓度具有不同时间尺度上的显著特征:秋冬污染重,春夏污染轻;污染重时污染持续时间长,消散窗口时间短;不同年份差别较大,在数据覆盖时间范围内,改善趋势明显;与PM10浓度比较发现,不同季节两者的一致性关系差别较大,秋冬季节强于春夏季节.结合典型PM2.5污染个例发生时的地面气象要素分析得出,PM2.5污染时地面偏暖、偏湿、弱风、低压发展,从事实上证实了气象要素影响空气质量的理论机制,气象指标的平均偏差的分析结果也为污染天气预测预报及大气环境管理提供了量化依据。
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