Trends of air pollution in the Western Mediterranean Basin from a 13-year database: A research considering regional, suburban and urban environments in Mallorca (Balearic Islands)

Impact of medium-distance pollution sources in a Galician suburban site (NW Iberian peninsula)

“…Similar profiles were reported for other urban locations (Bigi and Harrison, 2010;Alier et al, 2009;Dongarrà et al, 2010;Moreno et al, 2009;Reche et al, 2011;Shon et al, 2011;Cerro et al, 2015). The much smaller traffic density during the weekends make rush hours and traffic-related peaks not so defined, yielding significantly lower NO concentrations (Hellebust et al, 2010;Cerro et al, 2015), see Fig. 2d.…”

“…The 'weekend effect' on the ozone formation was clear as its concentrations on Saturday and Sunday were higher than on weekdays (e.g., 47 μg m − 3 for weekdays and 58 μg m − 3 for weekends, in 2009), which corresponded to lower concentrations of O 3 precursors, NO + NO 2 and volatile organic compounds (Bigi and Harrison, 2010;Moreno et al, 2009;Qin et al, 2004;Hellebust et al, 2010). The same daily and weekday patterns were presented recently for the Balearic Islands (Cerro et al, 2015). The lowest values of O 3 were observed with S and SE winds and this agreed with maximum values for NO (see above).…”

Effects of fireworks ancient celebrations on atmospheric concentration of particulate matter in Iran

“…Garaga and Kota (2018) indicated that the mean PM 10 concentration during Diwali, 311 µg/m 3 , was 81% higher than other days and 3.1-times higher the Indian National Ambient Air Quality Standards. For first observed in the U.S.A. in the 1970s (Jimenez, Parra, Gasso, & Baldasano, 2005), and since then, many studies have reported these effects that are influenced by traffic rush hours (e.g., Cerro, Cerda, & Pey, 2014;Henschel et al, 2015), population size (e.g., Butenhoff et al, 2015), and degree of urbanization (e.g., Huryn & Gough, 2014). Diverse cultural activities in the world can directly enhance primary pollutants, such as the Sunday roast of Victorian England (Brimblecombe, 2012) or barbecues (Tsai, Sopajaree, Kuo, & Yu, 2015).…”

Effect of Chahar-Shanbe Suri Celebration on Air Quality in Iran: A Case Study of Tehran (Megacity)

“…In studies, Qin et al [5] reported that the average concentrations of CO, PM10, NOx, and NMOC at weekends were lower than those on weekdays in southern California. for first observed in the USA in the 1970s [6], and since then, many studies have reported these effects that are influenced by traffic rush hours [7,8], population size (e.g., Butenhoff et al [9] and degree of urbanisation [10]. Diverse cultural activities in the world can directly enhance primary pollutants, such as the Sunday roast of Victorian England [11] or barbecues [12].…”