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成都市PM10对大气辐射环境的影响

谢志辉 刘春琼 史凯

谢志辉, 刘春琼, 史凯. 成都市PM10对大气辐射环境的影响[J]. 环境科学研究, 2016, 29(7): 972-977.
引用本文: 谢志辉, 刘春琼, 史凯. 成都市PM10对大气辐射环境的影响[J]. 环境科学研究, 2016, 29(7): 972-977.
XIE Zhihui, LIU Chunqiong, SHI Kai. Impacts of PM10 on the Radiation Environments of the Atmosphere in Chengdu City[J]. Research of Environmental Sciences, 2016, 29(7): 972-977.
Citation: XIE Zhihui, LIU Chunqiong, SHI Kai. Impacts of PM10 on the Radiation Environments of the Atmosphere in Chengdu City[J]. Research of Environmental Sciences, 2016, 29(7): 972-977.

成都市PM10对大气辐射环境的影响

基金项目: 国家自然科学基金地区科学基金项目(41465010);湖南省教育厅科学研究一般项目(15C1117);湖南省研究生培养创新基地开放项目(JDST201506)

Impacts of PM10 on the Radiation Environments of the Atmosphere in Chengdu City

  • 摘要: 为研究城市PM10对大气辐射环境的影响,利用2013年6月1日—2014年5月31日成都市ρ(PM10)和空气吸收剂量率的逐日监测数据,采用DCCA(去趋势互相关分析)法对二者的相关性进行分析. 结果表明:在1 a的时间尺度上,成都市ρ(PM10)与空气吸收剂量率之间存在显著的正相关性(标度指数为0.928),并且这种正相关性具有长期、持续的特征,但相关性的强度却随时间以幂函数形式缓慢衰减. 冬夏两季ρ(PM10)与空气吸收剂量率的相关性存在显著差异. 在冬季重度灰霾期间,二者DCCA标度指数为0.968,说明高ρ(PM10)已对城市大气辐射环境产生了影响;而夏季二者的DCCA曲线分为两段,标度指数分别为0.579、1.519,折点位置对应的特征时间尺度约为2个月,推测这与当地夏季降雨的时间分布模式有关. 研究表明,在当前灰霾日益频发的背景下,需要重视城市重度灰霾对城市大气辐射环境造成的影响.

     

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出版历程
  • 收稿日期:  2015-12-18
  • 修回日期:  2016-05-03
  • 刊出日期:  2016-07-25

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