摘要
基于2019年9月~2020年5月东营市42个空气质量地面监测站点的逐小时空气质量数据,结合新型冠状病毒肺炎(COVID-19)疫情期间生活生产方式变化情况,以月度、日度、周度、小时4种时间尺度,从时间、空间尺度对东营市AQI展开研究。研究发现,空间分布呈现“北优南劣”,内陆污染重于沿海;月度变化呈现疫情大面积爆发前(12、1月份)空气污染加重,疫情期间空气质量明显变好;工作日休息日变化呈现倒“S”型分布,休息日污染重于工作日;日度变化呈现周期性,冬季12、1月份AQI数值波动明显;小时尺度呈现AQI数值倒“S”变化,峰谷值分别出现在9时和15~16时,差距明显,疫情期间AQI小时均值明显降低,且峰谷值差距减小。
Based on the hourly air quality data of 42 ground monitoring stations in Dongying City from September 2019 to May 2020,considering the changes of living and production mode during COVID-19 epidemic period,the AQI in Dongying City was studied from monthly,weekly,daily and hourly respectively.The results showed that AQI was better in the north compared with the south,and the inland pollution was more serious compared with the coastal pollution.According to the monthly changes,it could be found that air pollution increased before the outbreak(December and January),and air quality significantly improved during the outbreak.The variation of the holidays and working days presented an inverted"S"pattern,and the pollution of holidays was heavier than that of working days.The diurnal variation presented periodical,and the AQI values fluctuated obviously in December and January in winter.On the hourly scale,the values of AQI was observed as an inverted"S",and the peak and valley values appeared at 9 h and 15-16 h,respectively,showing a significant difference.During the epidemic period,the hourly mean value of AQI decreased significantly,and the diffrence between the peak and the valley decreased.
作者
崔志浩
李成名
戴昭鑫
CUI Zhihao;LI Chengming;DAI Zhaoxin(School of Surveying and Mapping Science and Engineering,Shandong University of Science and Technology,Qingdao 266000,China;Chinese Academy of Surveying and Mapping,Beijing 100089,China)
出处
《环境保护科学》
CAS
2021年第3期133-137,共5页
Environmental Protection Science
基金
国家重点研发计划(2018YFB2100700)。
