摘要
利用天津市2013-2018年空气质量监测数据和同期气象数据,分析了天津市大气主要污染物浓度变化特征及其与气象要素之间的关系。结果表明,自2013年实施"大气十条"以来,天津市环境空气质量逐年改善效果显著,6项主要污染物中,除O3外,PM2.5、PM10、SO2、NO2、CO5项污染物浓度均明显下降。与京津冀13个城市平均水平相比,天津市2018年环境空气质量总体略好,但与首批实施新环境空气质量标准的74个重点城市平均水平相比仍有一定差距。降水、风速、湿度和温度等气象要素对于天津市空气质量影响显著,风速、气温、降水、日照时数与O3正相关,与其他污染物负相关;气压与SO2、NO2、CO正相关,与O3负相关性,与颗粒物无明显相关性;相对湿度与PM2.5和CO正相关,与SO2、NO2负相关,与PM10、O3无明显相关性。
Based on the air quality monitoring data of Tianjin from 2013 to 2018 and the meteorological data of the same period, this paper analyzes the variation characteristics of the atmospheric pollutants concentration and their relationship with meteorological elements. The results show that since the implementation of "Air Pollution Prevention Action Plan" in 2013,the ambient air quality in Tianjin has improved significantly year by year. Among the six major pollutants, five pollutants(PM2.5, PM10, SO2, NO2 and CO) concentration is significantly reduced except for O3. Compared with the average level of 13 cities in Beijing–Tianjin–Hebei region, the overall environmental air quality of Tianjin in 2018 is slightly better. But there is still a certain gap compared with the average level of the 74 key cities that implemented the new ambient air quality standards. Meteorological elements such as precipitation, wind speed, humidity and temperature have significant impact on air quality in Tianjin. Wind speed, temperature, precipitation and sunshine hours are positively correlated with O3, and negatively correlated with other five pollutants. The air pressure is positively correlated with SO2, NO2 and CO, and negatively correlated with O3, but has no obvious correlation with particulate matter. The relative humidity is positively correlated with PM2.5 and CO, and negatively correlated with SO2 and NO2, but has no obvious correlation with PM10 and O3.
作者
李怀明
郭健
闫佩
李敏姣
廖光龙
罗彦鹤
张亦楠
LI Huaiming;GUO Jian;YAN Pei;LI Minjiao;LIAO Guanglong;LUO Yanhe;ZHANG Yi’nan(Tianjin Huanke Environmental Planning Technology Development Co.,Ltd.,Tianjin 300191,China)
出处
《天津科技》
2019年第6期86-88,93,共4页
Tianjin Science & Technology
关键词
空气质量
气象要素
相关分析
Spearman相关系数
air quality
meteorological elements
correlation analysis
Spearman correlation coefficient
