Urban core-downwind differences and relationships related to ozone production in a major urban area in Texas

Traffic, transport, and vegetation drive VOC concentrations in a major urban area in Texas

“…These studies have shown that the contribution of a specific VOC to O 3 formation depends both on its intrinsic reactivity and its abundance and emission strength J o u r n a l P r e -p r o o f Journal Pre-proof (Kansal, 2009;Venecek et al, 2018). The O 3 production model based on inorganic trace gas and VOCs, including those discussed in detail herein, showed that the OH reactivity of formaldehyde, isoprene and alkenes were amongst the highest in San Antonio (Guo et al, 2021).…”

“…Anthropogenic, biogenic and oxidized VOCs are relevant to San Antonio's air quality due to their impact on both atmospheric chemistry and public health associated (Anderson et al, 2019;Guo et al, 2021). Apart from O 3 production, gas-phase oxidation of anthropogenic and biogenic VOCs can also lead to secondary organic aerosol formation and contribute to the particulate matter (PM) pollution in the atmosphere (Sun et al, 2016).…”

“…In addition to being emitted from primary sources, oxidized VOCs (OVOCs) such as acetone, acetaldehyde, methyl vinyl ketone (MVK), methacrolein (MACR), methyl ethyl ketone (MEK), and hydroxyacetone can be produced in the atmosphere and be present in aged airmass (Kudo et al, 2014;Lewis et al, 2005). Due to such numerous J o u r n a l P r e -p r o o f Journal Pre-proof emission and atmospheric sources, the VOC mixture is complex in San Antonio (Anderson et al, 2019;Guo et al, 2021).…”

“…in San Antonio. Two manuscripts have been published describing O 3 production chemistry during the SAFS campaign (Anderson et al, 2019;Guo et al, 2021). Anderson et al ( 2019) suggest that the daytime O 3 production rate was two times higher in San Antonio compared to upwind locations, and that BVOCs contributed to 55% of the total OH reactivity in San Antonio.…”

Spatial Variation of Surface O3 Responses to Drought Over the Contiguous United States During Summertime: Role of Precursor Emissions and Ozone Chemistry

“…Details of the model and chemical reactions were described by Crawford et al (1999) and Olson et al (2006). It is widely used to examine O 3 photochemistry and has comparable performance with other box models (Flynn et al, 2010;Guo et al, 2021;Schroeder et al, 2017). We ran the model in a time-dependent mode, in which the model run continues until all the radical species reach diurnal equilibrium.…”