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首页 > 过刊浏览>2020年第12卷第6期 >656-664. DOI:10.13878/j.cnki.jnuist.2020.06.002
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2014—2019年北京和南京地区PM2.5和臭氧质量浓度相关性研究
作者:
中图分类号:

X511

基金项目:

国家重点研发计划（2018YFC0213800）；国家自然科学基金（41675125，42007187）


Correlation between surface PM2.5 and ozone during 2014-2019 in Beijing and Nanjing
Author:
  • SUN Jinjin

    SUN Jinjin

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • HUANG Lin

    HUANG Lin

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • GONG Kangjia

    GONG Kangjia

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • WANG Xueying

    WANG Xueying

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • LI Jingyi

    LI Jingyi

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • QIN Momei

    QIN Momei

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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  • YU Xingna

    YU Xingna

    Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044
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  • HU Jianlin

    HU Jianlin

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing 210044
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    摘要:

    自2014年以来，中国细颗粒物（PM2.5）浓度大幅度下降，但臭氧（O3）浓度逐年缓慢上升，厘清PM2.5和O3（P-O）相关性尤为关键.在本研究中，2014—2019年北京和南京PM2.5年均质量浓度下降幅度分别为-6.86和-6.15 μg·m-3·a-1；而日最大8小时平均O3质量浓度（MDA8 O3）年均增长幅度为1.50和1.75 μg·m-3·a-1.研究期间，北京地区MDA8 O3质量浓度小于100 μg·m-3，P-O呈负相关；而当质量浓度大于100 μg·m-3时，P-O为正相关.通过Pearson相关系数研究P-O两者相关性.在两个城市每月相关性分析中，在每日时间尺度5—9月为强的正相关；而小时时间尺度11月至次年2月趋于负相关.在北京，P-O每月和季节相关性变化大于南京.在日变化中，夏季在16时为强的正相关，春秋两季在13—17时为弱的正相关，而在春、秋和冬季8时，却为强的负相关.

    Abstract:

    It is particularly important to clarify the correlation between fine particulate matter (PM2.5) and O3 (P-O) in account of the seemingly increasing surface ozone and decreasing PM2.5 trends in China since 2014.Therefore,observations of hourly PM2.5 and O3 data for Beijing and Nanjing during 2014 to 2019 were summarized to reveal their P-O correlations.The observations showed a decreasing trend of annual average PM2.5 mass concentration,which was -6.86 and -6.15 μg·m-3·a-1 for Beijing and Nanjing,respectively.While the annual maximum daily 8-hour average O3 (MDA8 O3) increased by 1.50 and 1.75 μg·m-3·a-1 for Beijing and Nanjing,respectively.O3 pollution became more serious in summer for both cities.For Beijing,when O3 mass concentration was below/above 100 μg·m-3,the increase of O3 concentration would correspond to the decrease/increase of PM2.5 concentration,indicating a negative/positive P-O correlation.The same varying P-O correlation existed for Nanjing,except for the different critical value of O3 mass concentration of 150 μg·m-3.Significantly positive P-O correlation,indicated by Pearson correlation coefficient (COR) being larger than 0.5 on daily time scale,was found in both Beijing and Nanjing during May to September.While significantly negative P-O correlation,indicated by COR value being smaller than -0.5 on hourly time scale,was found for both Beijing and Nanjing during November to February.Compared with Nanjing,monthly and seasonal P-O correlation varied more greatly for Beijing.As for the diurnal variation,there was a significantly positive P-O correlation at 16:00 in summer and a weakly positive correlation during 13:00-17:00 in spring and autumn,and a significantly negative correlation at 08:00 in spring,autumn and winter.

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孙金金,黄琳,龚康佳,王雪颖,李婧祎,秦墨梅,于兴娜,胡建林.2014—2019年北京和南京地区PM2.5和臭氧质量浓度相关性研究[J].南京信息工程大学学报(自然科学版),2020,12(6):656-664
SUN Jinjin, HUANG Lin, GONG Kangjia, WANG Xueying, LI Jingyi, QIN Momei, YU Xingna, HU Jianlin. Correlation between surface PM2.5 and ozone during 2014-2019 in Beijing and Nanjing[J]. Journal of Nanjing University of Information Science & Technology, 2020,12(6):656-664

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  • 收稿日期:2020-10-09
  • 在线发布日期: 2020-12-30

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