| 基于气流轨迹大气输送对大连市酸雨形成分析 |
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| 引用本文： | 石敏,张青新,于宁,陈宗娇.基于气流轨迹大气输送对大连市酸雨形成分析[J].环境科学与技术,2011(Z2):236-241. |
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| 作者姓名： | 石敏 张青新 于宁 陈宗娇 |
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| 作者单位： | 辽宁省环境监测实验中心 |
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| 摘 要： | 文章利用HYSPLIT-4后推气流轨迹模式,对辽宁省大连市2007年的降水来源进行气流轨迹模拟,再通过聚类分析方法,得到气流的平均轨迹分布,从而分析大连市降水的来源及各方向气流对酸雨形成的影响。研究表明,大连市酸雨污染主要由西-南、西北和北-东-南3个方向气流形成。在季风影响下,6-10月的雨季,来自西-南方向气流多经过河北、京津、山东、我国东部沿海等工业发达地区或朝鲜半岛;起源于北绕行东-南方向气流仅在辽宁省内行12小时后,也途经山东或朝鲜半岛及南部海域,这2个方向的气流运行高度低,地面污染贡献大,携带大量致酸前体物,在大连形成酸性降水频率高,导致其酸雨污染严重。而来自西北方向的气流经过蒙古、内蒙古、辽宁西部等工业欠发达地区,且多在高空运行,气流相对干净,很少形成酸性降水。
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| 关 键 词： | 酸雨 HYSPLIT-4模式 污染物输送 后向轨迹 |
Analysis on the Form of Acid Rain in Dalian Based on Air Trajectory Clustering |
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| SHI Min,Zhang Qing-xin,YU Ning,Chen Zong-jiao.Analysis on the Form of Acid Rain in Dalian Based on Air Trajectory Clustering[J].Environmental Science and Technology,2011(Z2):236-241. |
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| Authors: | SHI Min Zhang Qing-xin YU Ning Chen Zong-jiao |
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| Institution: | (Liaoning Environmental Monitoring & Experiment Center,Shenyang 110031,China) |
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| Abstract: | An air trajectory clustering methodology based on HYSPLIT-4 model and a clustering algorithm was developed to analyze the form of acid rain in Dalian city.The result showed the pollution of acid rain in Dalian was influenced by the air masses originated from east-south and southwest,which passed Hebei,Beijing,Tianjin,Shandong area or korean peninsula.Relatively,the air masses originated from north-west hardly formed acid rain. |
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| Keywords: | acid rain HYSPLIT-4 model transport of air polutant backward trajector |
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