| 华东森林及高山背景区域臭氧变化特征及影响因素 |
| 摘要点击 3129 全文点击 1564 投稿时间：2012-06-26 修订日期：2013-02-28 |
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| 中文关键词 高山背景站 臭氧 变化特征 影响因子 区域输送 聚类分析 |
| 英文关键词 high mountain background site ozone variation characteristic impact factor regional transportation cluster analysis |
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| 中文摘要 |
| 为了探讨华东森林及高山背景区域大气中地面O3质量浓度的变化特征,以及相关物质和气象因子对O3生成和变化的影响,选取国家大气背景监测福建武夷山站2011年3月~2012年2月O3为期1 a的监测数据,研究其浓度变化特征和影响因子,并利用后向轨迹模式探讨区域输送对华东森林及高山背景区域O3质量浓度的影响. 结果表明,华东森林及高山区域O3背景浓度为(87.9±34.1)μg·m-3; O3浓度具有明显的季节变化特征,春季>秋季>夏季>冬季; 与其它气体污染物的相关性分析结果表明,O3来源于远距离水平输送、平流层注入和光化学反应生成; 来自高空、长三角地区、珠三角地区气团的输送导致武夷山背景点O3浓度出现极大值. |
| 英文摘要 |
| The O3 concentrations were measured online from March 2011 to February 2012 at the national atmospheric background monitoring station in Wuyishan of Fujian Province to discuss the characteristic of O3 concentrations and the impact factors in forest and mountain background region of East China. HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) Model was used to investigate the potential sources of particulates during the pollution episodes. The results showed that the background concentration of O3 was (87.9±34.1) μg·m-3. Seasonal variations of O3 loadings were observed, and the loadings decreased in the order spring>autumn>summer>winter. Analysis of correlation between O3 and other gas pollutants suggested regional transportation, stratospheric injection and photochemical production were the major sources of O3 in Wuyishan background station. The episodes were related with transportations of air parcel from Yangtze River Delta region, Pearl River Delta region and the high altitudes. |
