摘要
根据郑州市2015—2019年的空气质量逐时数据,分析了空气质量的主要变化特征,并探讨了空气质量与气象要素之间的关系.结果表明:近五年来郑州市的空气质量有明显的改善,空气质量指数(AQI)由2015年的134.94降低到了2019年的97.55,降幅达27.71%,在六种主要污染物中,PM_(2.5)、PM_(10)、SO_(2)、CO和NO_(2)质量浓度呈逐年下降的趋势,分别下降了37.55%、36.23%、71.58%、40.57%和20.98%;O_(3)质量浓度相反,有逐年上升的趋势,上升了27.44%.污染物的污染呈季节性变化,PM_(2.5)、PM_(10)、SO_(2)、CO、NO_(2)污染物质量浓度一般在冬季最高,夏季最低,O_(3)反之;O_(3)与温度呈强正相关性,AQI与能见度呈负相关.风速、降水量等对空气污染起到一定的改善作用.
The main variation characteristics of air quality and the relationship between air quality and meteorological factors in Zhengzhou were analyzed based on real-time hourly data of air quality index(AQI)and other six majorpollutants from 2015 to 2019.The results indicated that the air quality in Zhengzhou has been improved significantly in the past five years,and the AQI has decreased from 134.94 in 2015 to 97.55 in 2019,with a decrease of 27.71%.Of the six major pollutants,the mass concentrations of PM_(2.5),PM_(10),SO_(2),CO and NO_(2)showed a trend of decrease of 37.55%,36.23%,71.58%,40.57%and 20.98%respectively.While the mass concentration of O_(3)showed a trend of increasing year by year,with an increase of 27.44%.The pollution of pollutants varied seasonally,the mass concentration of PM_(2.5),PM_(10),SO_(2),CO,NO_(2)was generally the highest in winter and the lowest in summer,O_(3)was vice versa.O_(3)had strong positive correlation with temperature.AQI was negatively correlated with visibility,and wind speed and precipitation to some extend can improve air pollution.
作者
任艳培
张洪伟
谢国红
REN Yanpei;ZHANG Hongwei;XIE Guohong(School of Resources and Environment,Henan Institute of Science and Technology,Xinxiang 453003,China)
出处
《河南科技学院学报（自然科学版）》
2021年第2期54-61,共8页
Journal of Henan Institute of Science and Technology(Natural Science Edition)
基金
国家自然基金科学基金青年项目(31902405)。
关键词
郑州市
空气质量
污染物
气象要素
Zhengzhou
air quality
pollutants
meteorological factors
