Measurements of surface ozone and its precursors in different microenvironments of coastal Indian metropolis of Mumbai

2022 ◽  
Author(s):  
N. Korhale ◽  
V. Anand ◽  
A. Panicker ◽  
G. Beig
Keyword(s):  
Surface Ozone

On the understanding of surface ozone variability, its precursors and their associations with atmospheric conditions over the Delhi region

2021 ◽  
Vol 258 ◽  
pp. 105653
Author(s):  
Anshika ◽  
Ravi Kumar Kunchala ◽  
Raju Attada ◽  
Ramesh K. Vellore ◽  
Vijay K. Soni ◽  
...  
Keyword(s):  
Surface Ozone ◽  
Atmospheric Conditions

scholarly journals One-Year Characterization and Reactivity of Isoprene and Its Impact on Surface Ozone Formation at A Suburban Site in Guangzhou, China

Atmosphere ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 201 ◽  
Author(s):  
Yu Zou ◽  
Xue Jiao Deng ◽  
Tao Deng ◽  
Chang Qin Yin ◽  
Fei Li
Keyword(s):  
Surface Ozone ◽  
Atmospheric Composition ◽  
Anthropogenic Factors ◽  
Mixing Ratio ◽  
Night Time ◽  
Subtropical Zone ◽  
Guangzhou City ◽  
Mixing Ratios ◽  
One Year ◽  
Suburban Site

Isoprene has a potentially large effect on ozone (O3) formation in the subtropical, highly polluted city of Guangzhou. Online measurements of isoprene in Guangzhou city are scarce; thus, isoprene levels were monitored for one year at the Guangzhou Panyu Atmospheric Composition Station (GPACS), a suburban site in Guangzhou, using an online gas chromatography-flame ionization detector (GC–FID) system to investigate the characterization and reactivity of isoprene and its effect on the O3 peak profile in different seasons. The results showed that the daily average mixing ratios of isoprene at GPACS were 0.40, 2.20, 1.40, and 0.13 mixing ratio by volume (ppbv) in spring, summer, autumn, and winter, respectively. These values were considerably higher than the mixing ratios of isoprene in the numerous other subtropical and temperate cities around the world. Furthermore, isoprene ranked first with regard to O3 formation potential (OFP) and propylene-equivalent mixing ratio among 56 measured non–methane hydrocarbons (NMHCs). The ratios of isoprene to cis-2-butene, an exhaust tracer, were determined to estimate the fractions of biogenic and anthropogenic emissions. The results revealed a much greater contribution from biogenic than anthropogenic factors during the daytime in all four seasons. In addition, night-time isoprene emissions were mostly associated with vehicles in winter, and the residual isoprene that remained after photochemical loss during the daytime also persisted into the night. The high levels of isoprene in summer and autumn may cause the strong and broad peaks of the O3 profile because of its association with the most favorable meteorological conditions (e.g., high temperature and intense solar radiation) and the highest OH mixing ratio, which could affect human health by exposing people to a high O3 mixing ratio for prolonged periods. The lower mixing ratios of isoprene resulted in a weak and sharp peak in the O3 profile in both spring and winter. The high level of isoprene in the subtropical zone could accentuate its large impact on atmospheric oxidant capacity and air quality in Guangzhou city.

scholarly journals Springtime high surface ozone events over the western United States: Quantifying the role of stratospheric intrusions

2012 ◽  
Vol 117 (D21) ◽  
pp. n/a-n/a ◽  
Author(s):  
Meiyun Lin ◽  
Arlene M. Fiore ◽  
Owen R. Cooper ◽  
Larry W. Horowitz ◽  
Andrew O. Langford ◽  
...  
Keyword(s):  
United States ◽  
Surface Ozone ◽  
High Surface ◽  
Western United States ◽  
Stratospheric Intrusions

Surface ozone in Joshua Tree National Park

2014 ◽  
Vol 87 ◽  
pp. 95-107 ◽  
Author(s):  
Joel D. Burley ◽  
Andrzej Bytnerowicz ◽  
John D. Ray ◽  
Susan Schilling ◽  
Edith B. Allen
Keyword(s):  
National Park ◽  
Surface Ozone ◽  
Joshua Tree National Park

Surface ozone-temperature relationships in the eastern US: A monthly climatology for evaluating chemistry-climate models

2012 ◽  
Vol 47 ◽  
pp. 142-153 ◽  
Author(s):  
D.J. Rasmussen ◽  
A.M. Fiore ◽  
V. Naik ◽  
L.W. Horowitz ◽  
S.J. McGinnis ◽  
...  
Keyword(s):  
Climate Models ◽  
Surface Ozone

scholarly journals Are decadal anthropogenic emission reductions in Europe consistent with surface ozone observations?

2006 ◽  
Vol 33 (13) ◽  
Author(s):  
Robert Vautard ◽  
Sophie Szopa ◽  
Matthias Beekmann ◽  
Laurent Menut ◽  
Didier A. Hauglustaine ◽  
...  
Keyword(s):  
Surface Ozone ◽  
Anthropogenic Emission ◽  
Emission Reductions
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