| 河源市空气质量首要污染物特征及其与气象条件的关系 |
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| 引用本文： | 张辉,巫楚,张敬伟,林小平,梁家权,刘素,郭艳芳,李成柳.河源市空气质量首要污染物特征及其与气象条件的关系[J].气象与环境学报,2022,38(1):40-47. |
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| 作者姓名： | 张辉 巫楚 张敬伟 林小平 梁家权 刘素 郭艳芳 李成柳 |
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| 作者单位： | 1. 河源市环境监测站, 广东 河源 5170002. 壹点环境科技(广州)有限公司, 广东 广州 5102503. 青岛华思环保科技有限公司, 山东 青岛 266199 |
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| 基金项目： | 河源市大气环境污染成因研究项目(HYJCCG2018009)资助。 |
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| 摘 要： | 基于2017-2019年河源市空气质量数据，分析了河源市首要污染物的年际变化特征，同时利用2019年东埔国控站点的首要污染物与气象要素进行了相关性分析，并以典型污染日为案例，分析了气象条件对污染过程的影响。结果表明：2017-2019年细颗粒物（PM2.5）污染日比重大幅度降低，以臭氧（O3）为首要污染物的污染日逐年增加，污染形式逐渐从颗粒物污染向臭氧污染发生转变。O3浓度与温度和湿度分别呈正负相关关系，高浓度O3主要出现在（20-30℃，25%-55%）阈值之间，在吹西北偏北风时O3浓度也较高。PM2.5和PM10与湿度也呈负相关关系，温度与湿度组合在（8-13℃，40%-55%）范围内时两者容易同时出现高值；在夏季PM2.5和PM10还与温度具有较强的正相关关系，这意味着高温情况下河源有出现颗粒物与O3复合污染的可能。河源市典型污染日具有风速较小局部扩散不利的特征，低温低湿条件下容易出现PM2.5污染，且主要受到区域的传输影响；而高温低湿条件下容易发生O3污染，且较高的前体物浓度容易加剧O3的本地污染。
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| 关 键 词： | 空气污染 首要污染物 气象条件 相关性分析 |
| 收稿时间： | 2020-07-22 |
Characteristics of primary pollutants of air quality and their relationships with meteorological conditions in Heyuan |
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| ZHANG Hui,WU Chu,ZHANG Jing-wei,LIN Xiao-ping,LIANG Jia-quan,LIU Su,GUO Yan-fang,LI Cheng-liu.Characteristics of primary pollutants of air quality and their relationships with meteorological conditions in Heyuan[J].Journal of Meteorology and Environment,2022,38(1):40-47. |
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| Authors: | ZHANG Hui WU Chu ZHANG Jing-wei LIN Xiao-ping LIANG Jia-quan LIU Su GUO Yan-fang LI Cheng-liu |
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| Institution: | 1. Heyuan Environmental Monitoring Station, Heyuan 517000, China2. OnePoint Environmental Consultant Co. Ltd., Guangzhou 510250, China3. Qingdao Huasi Environmental Protection Technology Co. Ltd., Qingdao 266199, China |
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| Abstract: | Based on the air quality monitoring data in Heyuan from 2017 to 2019,the interannual variation of primary air pollutants was analyzed in this study.The correlation analysis between the concentrations of primary air pollutants and meteorological conditions was conducted using the data at the Dongpu national observational station in 2019,and the impact of the meteorological conditions on typical air pollution events was also explored.The results showed that the proportion of polluted days with fine particle matter(PM2.5)as the primary air pollutant decreases significantly,and the polluted days with ozone(O3)as the primary air pollutant increase,which means the particulate matter pollution gradually transfers to ozone pollution in Heyuan.O3concentrations are positively correlated with temperature and negatively correlated with humidity.High concentrations of O3mainly concentrate within the thresholds(20-30℃,25%-55%),and also occur under north-northwesterly winds.PM2.5and PM10concentrations are negatively correlated with humidity and tend to have high values when temperature and humidity are within the ranges of 8-13℃and 40%-50%,respectively.In summer,PM2.5and PM10show a strong positive correlation with temperature,which means the combined PM and ozone pollution is possible to occur under high-temperature conditions in Heyuan.The typical pollution days in Heyuan are characterized by weak winds and unfavorable local dispersion conditions.PM pollution tends to occur under low temperature and low humidity conditions and is mainly affected by regional transport.O3pollution tends to occur under high temperature and low humidity conditions and can be exacerbated in the presence of high precursor concentrations. |
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| Keywords: | Air pollution Primary pollutants Meteorological conditions Correlation analysis |
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