湖州近地面臭氧浓度变化特征分析
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摘要
利用湖州3个大气成分监测站的2013-2015年污染物监测数据,分析了O_3浓度的变化特征,讨论了O_3浓度与五种污染物(PM_(2.5)、PM_(10)、NO_2、CO和SO_2)的相关性。研究发现:年O_3浓度频率呈类指数衰减分布特征,二级标准年超标率为5.99%;O_3表现出明显的季节变化特征,夏季、春季是湖州高浓度O_3易发季节,夏季超标率最高,达到10.73%,冬季超标率接近0;月平均O_3浓度呈双峰型分布,峰值浓度出现在5月和9月;日平均O_3浓度谷值和峰值分别出现在6时和15时,且冬季日变化幅度明显小于其它3个季节;O_3与PM_(2.5)、NO_2负相关明显,与SO_2变化趋势相似,一般比SO_2滞后6 h。
Based on the data of three atmospheric composition monitoring stations 2013-2015 in Huzhou, the variation characteristics of ozone concentration and the relationship between ozone Concentration and other five Pollution parameters(PM_(2.5)、PM_(10)、NO_2、CO、SO_2)were analyzed. The result showed that:the frequency of ozone concentration is attenuation at similar to exponential distribution,exceeding rate of second level standard was 5.99%. Ozone concentration has obvious seasonal variation features. High ozone concentration occurred mostly in summer and spring, the highest exceeding rate occured in summer, reaching 10.73%, and it is close to 0 in winter. The monthly average ozone concentration shows double peak type, the peak values appeared in May and September. The ozone concentration has an obvious diurnal variation with its main peak at 15: 00 and valley at 06: 00, and the diurnal variation in winter is significantly smaller than that in the other three seasons. Ozone shows significant negative correlation with PM_(2.5)and NO_2, and it has similar trends with SO_2 and lags 6 hours behind NO_2 generally.
Based on the data of three atmospheric composition monitoring stations 2013-2015 in Huzhou, the variation characteristics of ozone concentration and the relationship between ozone Concentration and other five Pollution parameters(PM_(2.5)、PM_(10)、NO_2、CO、SO_2)were analyzed. The result showed that:the frequency of ozone concentration is attenuation at similar to exponential distribution,exceeding rate of second level standard was 5.99%. Ozone concentration has obvious seasonal variation features. High ozone concentration occurred mostly in summer and spring, the highest exceeding rate occured in summer, reaching 10.73%, and it is close to 0 in winter. The monthly average ozone concentration shows double peak type, the peak values appeared in May and September. The ozone concentration has an obvious diurnal variation with its main peak at 15: 00 and valley at 06: 00, and the diurnal variation in winter is significantly smaller than that in the other three seasons. Ozone shows significant negative correlation with PM_(2.5)and NO_2, and it has similar trends with SO_2 and lags 6 hours behind NO_2 generally.
引文
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[12] 王冠岚,薛建军,张建忠.2014年京津冀空气污染时空分布特征及主要成因分析[J].气象与环境科学,2016,39(1):34-42.
[2] 杨昕,李兴生.近地面O_3变化化学反应机理的数值研究[J].大气科学,1999,23(4):427-438.
[3] Pochanart P, Akimoto H, Kinjo Y,et al.Surface Ozone at Four Remote Island Sites and the Preliminary Assessment of the Exceedances of its Critical Level in Japan[J],Atmospheric Environment,2002,36(26):4235-4250.
[4] Wolfe A H,Patz J A. Reactive Nitrogen and Human Health: Acute and Long-Term Implications[R]. AMBIO, 2002,31(2): 120-125.
[5] 孔琴心,刘广仁,李桂忱.近地面臭氧浓度变化及其对人体健康的可能影响[J].气候与环境研究,1999,4(1):61-66.
[6] 耿福海,刘琼,陈勇航.近地面臭氧研究进展[J].沙漠与绿洲气象,2012,6(6):8-14.
[7] 谈建国,陆国良,耿福海,等.上海夏季近地面臭氧浓度及其相关气象因子的分析和预报[J].热带气象学报, 2007, 23(5):515-520.
[8] 朱毓秀,徐家骝.气象因子对近地面臭氧污染影响的研究[J].大气科学,1994,18(6):13-18.
[9] 朱毓秀,徐家骝.近地面臭氧污染过程和相关气象因子的分析[J].环境科学研究,1994,7(6):751-757.
[10] 周艳明,刘厚凤,吴保庆.边界层臭氧浓度变化特征及相关因子分析[J].气象与环境学报,2008,24(1):63-66.
[11] 邓霞君,蔡振群,项晓美,等.丽水空气污染物时序特征及与气象条件的关系研究[J].气象与环境科学,2015,38(2):60-65.
[12] 王冠岚,薛建军,张建忠.2014年京津冀空气污染时空分布特征及主要成因分析[J].气象与环境科学,2016,39(1):34-42.