2007
DOI: 10.1016/j.atmosenv.2007.07.026
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Oxygenated volatile organic compounds (OVOCs) at an urban background site in Zürich (Europe): Seasonal variation and source allocation

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Cited by 108 publications
(74 citation statements)
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“…Various sources, either primary or secondary (Singh et al, 2004;Yáñez-Serrano et al, 2016), can be associated with these oxygenated compounds characterized by long atmospheric lifetimes but their association with long-lived anthropogenic species suggested primary/secondary anthropogenic contributions. Indeed, several studies performed in urban or in rural areas (de Gouw et al, 2005;Goldstein and Schade, 2000;Legreid et al, 2007) have attributed about half of these oxygenated compound concentrations to regional background pollution. Hence, the high abundance of long-lived species, in combination with the lack of shorter-lived compounds, suggests here aged air masses transported towards the sampling site.…”
Section: Regional Background (Factor 6)mentioning
confidence: 99%
“…Various sources, either primary or secondary (Singh et al, 2004;Yáñez-Serrano et al, 2016), can be associated with these oxygenated compounds characterized by long atmospheric lifetimes but their association with long-lived anthropogenic species suggested primary/secondary anthropogenic contributions. Indeed, several studies performed in urban or in rural areas (de Gouw et al, 2005;Goldstein and Schade, 2000;Legreid et al, 2007) have attributed about half of these oxygenated compound concentrations to regional background pollution. Hence, the high abundance of long-lived species, in combination with the lack of shorter-lived compounds, suggests here aged air masses transported towards the sampling site.…”
Section: Regional Background (Factor 6)mentioning
confidence: 99%
“…PMF and other similar factorization methods (e.g. Principal Component Analysis) have been applied previously for VOC measurements at urban ground sites where VOCs have distinct sources or diurnal profiles (Harley et al, 1992;Buzcu and Fraser, 2006;Millet et al, 2006;Legreid et al, 2007;Song et al, 2007). We use the results from the PMF analysis to estimate emission ratios and compare these with emission ratios derived directly from ground-based VOC measurements.…”
mentioning
confidence: 99%
“…The volume-weighted average concentration of methanol during the winter and fall rain events was 0.9 ± 0.2 µM and 0.7 ± 0.2 µM, respectively. Various previous studies have reported winter gas-phase methanol concentrations to be much smaller than those in summer, and these studies suggest a greater percent contribution from anthropogenic methanol sources during the winter (Millet et al, 2005;Legreid et al, 2007;Jordan et al, 2009;Hu et al, 2011). For instance, using toluene, benzene, and CO as anthropogenic tracers at a rural Midwestern US site, Hu et al (2011) estimated that up to 70 % of wintertime methanol emissions had an anthropogenic origin.…”
Section: Seasonal Variationsmentioning
confidence: 99%