Characteristics and Weekend Effect of Air Pollution in Eastern Jilin Province

Abstract

Using the hourly monitoring data of pollutants from 16 automatic atmospheric monitoring stations in eastern Jilin Province from 2015 to 2020, this paper analyzed the temporal and spatial distribution laws of CO, SO2, NO2, PM10, PM2.5, and O3 in eastern Jilin Province. At the same time, the regional transport pathways of pollutants were analyzed using the hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) model; the potential source contribution function (PSCF) analyzed the potential source area of PM2.5. Finally, the “weekend effect” of CO, NO2, PM2.5, and O3 was analyzed. The results showed that the six pollutants showed a downward trend year by year. The concentrations of O3, PM10, and PM2.5 were higher in northwest Jilin, and the concentrations of SO2 and CO were higher in southwest Jilin. Except for CO, the seasonal variation of pollutants was pronounced. Except for O3, most pollutants had the highest concentration in winter. Hourly variation analysis described that SO2 and O3 had only one peak in a day, and the other four pollutants showed “double peak” hourly variation characteristics. The study area was mainly affected by the airflow pathway from northwest and southwest. The weight potential source contribution function (WPSCF) high-value area of PM2.5 was northwest and southwest. O3 showed a “negative weekend effect”, and NO2 and CO showed a “positive weekend effect”.

Application of Mobile Monitoring to Study Characteristics of Air Pollution in Typical Areas of the Yangtze River Delta Eco-Green Integration Demonstration Zone, China

“…The results were different from the variation in pollutants in typical urban areas during weekends and weekdays. Lower concentrations of pollutants, especially NOx, were usually observed during weekends when compared with that of weekdays [21][22][23]. The higher concentration of pollutants in the Ancient Town during weekdays was closely related to the increased volume of visitors.…”

Weekend effect of air pollutants in small and medium-sized cities: The role of policies stringency to COVID-19 containment

“…For every week of the assessed period, we calculated the average air pollutant concentration for the weekend (i.e., Saturday and Sunday) and the average for the weekdays (i.e., Monday to Friday) to compute the weekend-weekday difference (total of 104 weeks, between 2020 and 2022). The mathematical model used to investigate the weekend effect was performed in accordance with the equation used by Fang et al (2022) . This is the classical method and has been adopted by many studies since the first years of assessing weekend effect for air pollutants ( Lebron, 1975 ) until nowadays ( Fang et al, 2022 ).…”

“…The mathematical model used to investigate the weekend effect was performed in accordance with the equation used by Fang et al (2022) . This is the classical method and has been adopted by many studies since the first years of assessing weekend effect for air pollutants ( Lebron, 1975 ) until nowadays ( Fang et al, 2022 ). where, C is the concentration of any of the pollutants studied (O 3 , NO 2 , SO 2 and PM 2.5 ); WE is the Weekend effect for pollutant C; C weekend is the daily average concentration of the pollutant on weekend days; C weekday is the daily average concentration of the pollutant on weekdays.…”

Weekend effect on air pollutant levels in southernmost cities of Brazil with different economic activities

“…The calculations used to investigate the weekend effect were performed in accordance with the equation used by Fang et al ( 2022 ). This is the classical method and has been adopted by many studies since the first years of assessing weekend effect (Lebron, 1975 ) until recent years (Fang et al, 2022 ).…”

“…The calculations used to investigate the weekend effect were performed in accordance with the equation used by Fang et al ( 2022 ). This is the classical method and has been adopted by many studies since the first years of assessing weekend effect (Lebron, 1975 ) until recent years (Fang et al, 2022 ). where C is the concentration of any of the pollutants studied (O 3 , NO 2 , SO 2 , and PM 2.5 ); WE is the weekend effect for pollutant C ; C weekend is the daily mean concentration of the pollutant on weekend days (i.e., Saturday and Sunday); C weekday is the daily mean concentration of the pollutant on weekdays (i.e., Monday to Friday).…”