| 摘要: |
| 分析2014—2016年江苏省O3污染状况，以及苏北、苏中和苏南3个典型区域O3年度、季度、日变化和频度占比等分布特征。结果表明，江苏省的O3空间分布呈现北低南高，2014—2016年的O3超标占比由18.4%上升至34.9%；2016年苏北、苏中和苏南地区O3-8h第90百分位数与2014年相比，上升2.7%，21.8%和3.3%；3个区域夏季O3-8h均值最高，春、秋2季次之，冬季最低；O3-1h日变化呈单峰状态，最低值出现在06:00—07:00，最高值出现在15:00—16:00；2016年3个地区的O3频度占比均呈正态分布，主要集中在40~80 μg/m3，所占比例均>15%；苏中和苏南区域2016和2014年相比O3频率占比的变化幅度较大，苏北地区变化幅度不大。指出，江苏省的O3污染程度在逐年提高，污染范围从苏南逐渐往中部和北部城市扩大。 |
| 关键词: 苏北 苏中 苏南 臭氧 污染特征 江苏省 |
| DOI： |
| 分类号:X515 |
| 文献标识码:B |
| 基金项目:江苏省环境监测基金资助项目（1307）；江苏省环境监测基金资助项目（1624)；大气环境监测数据共享技术及应用基金资助项目（2016YFC0201800）；江苏省环保科研基金资助项目（2016001） |
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| Analysis of Ozone Pollution in Jiangsu Province and Typical Areas from 2014 to 2016 |
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MAO Jingjing, ZHANG Lin, YANG Xue, WU Zhongxia
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Jiangsu Environmental Monitoring Center，Nanjing， Jiangsu 210036，China
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| Abstract: |
| This paper analyzes the ozone pollution in Jiangsu Province from 2014 to 2016, and the pollution distribution characteristics of ozone in Northern Jiangsu, Central Jiangsu and Southern Jiangsu three typical areas, focusing on yearly variation，seasonal variation, diurnal variation and frequency distribution. The results showed that the distribution of ozone in Jiangsu province presented a spatial distribution of higher in southern and lower in northern. The percentage of ozone exceeding the maximum allowable limit from 2014 to 2016 increased from 18.4% to 34.9%. In 2016, the 90th percentile of O3-8h in Northern, Central and Southern Jiangsu area increased by 2.7%, 21.8% and 3.3% compared with 2014. The highest concentration of ozone was in summer, followed by the spring and autumn, and the lowest in winter. The daily change of O3-1h was unimodal, the lowest value appeared at 06:00—07:00, the highest value appeared at 15:00—16:00. The proportion of ozone frequency in three typical areas in 2016 was normally distributed, mainly concentrated in 40~80 μg/m3, with a proportion of over 15%. Compared with 2014,Central Jiangsu and Northern Jiangsu showed great amplitude of variation of the frequency distribution of ozone, while Northern Jiangsu showed little change. The above analysis showed that the level of ozone pollution in Jiangsu is increasing year by year, and the pollution area spread gradually from Southern Jiangsu to central and northern cities. |
| Key words: Northern Jiangsu Central Jiangsu Southern Jiangsu Ozone Pollution characteristics Jiangsu province |
