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气象条件对河北廊坊城市空气质量的影响

何建军 吴琳 毛洪钧 李瑞芃

何建军, 吴琳, 毛洪钧, 李瑞芃. 气象条件对河北廊坊城市空气质量的影响[J]. 环境科学研究, 2016, 29(6): 791-799.
引用本文: 何建军, 吴琳, 毛洪钧, 李瑞芃. 气象条件对河北廊坊城市空气质量的影响[J]. 环境科学研究, 2016, 29(6): 791-799.
HE Jianjun, WU Lin, MAO Hongjun, LI Ruipeng. Impacts of Meteorological Conditions on Air Quality in Urban Langfang, Hebei Province[J]. Research of Environmental Sciences, 2016, 29(6): 791-799.
Citation: HE Jianjun, WU Lin, MAO Hongjun, LI Ruipeng. Impacts of Meteorological Conditions on Air Quality in Urban Langfang, Hebei Province[J]. Research of Environmental Sciences, 2016, 29(6): 791-799.

气象条件对河北廊坊城市空气质量的影响

基金项目: 国家科技支撑计划项目(2014BAC16B03);中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目(LPCC201405)

Impacts of Meteorological Conditions on Air Quality in Urban Langfang, Hebei Province

  • 摘要: 气象条件是影响大气污染的重要因子.利用2013年3月—2014年2月廊坊颗粒物质量浓度监测资料、自动气象站观测资料和欧洲中期天气预报中心再分析资料,采用多种统计方法分析气象与污染的关系,量化天气形势和局地气象条件对城市颗粒物质量浓度变化的贡献.结果表明:天气形势是决定局地气象要素和城市空气质量的重要因子.当廊坊位于高压中心或高压后部时,大气层结稳定,易造成重污染;当廊坊位于高压前部(气压梯度较大)时,大气层结不稳定,易于污染物输送和扩散.利用客观天气分型结合污染物质量浓度统计分析方法,可以量化天气形势对城市空气质量的影响.在局地气象要素中,能见度与ρ(PM2.5)、ρ(PM10)相关性最高(相关系数分别为-0.75和-0.53,下同),其次依次为风速(-0.45和-0.31)、相对湿度(0.41和0.25)和温度(-0.15和-0.06).通过污染物浓度与局地风场关系分析发现,廊坊颗粒物质量浓度受天津市、河北省南部区域输送的影响明显,受北京区域输送的影响相对较弱.研究显示,气象条件可以解释廊坊ρ(PM2.5)和ρ(PM10)日均值变化的56%和49%,其在冬季对颗粒物质量浓度影响最为显著,春秋季次之,夏季影响最小.

     

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出版历程
  • 收稿日期:  2015-11-21
  • 修回日期:  2016-02-24
  • 刊出日期:  2016-06-25

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