Effects of stratospheric ozone recovery on photochemistry and ozone air quality in the troposphere by H. Zhang, S. Wu, Y. Huang, Y. Wang

“…There has been significant stratospheric ozone depletion since the late 1970s due to ozone-depleting substances (ODSs). …”
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Measurements of ozone and its precursors in Beijing during summertime: impact of urban plumes on ozone pollution in downwind rural areas by J. Xu, J. Z. Ma, X. L. Zhang, X. B. Xu, X. F. Xu, W. L. Lin, Y. Wang, W. Meng, Z. Q. Ma

“…The purpose is to improve our understanding of ozone photochemistry in urban and rural areas of Beijing and the influence of urban plumes on ozone pollution in downwind rural areas. …”
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Insights into soil NO emissions and the contribution to surface ozone formation in China by L. Huang, L. Huang, J. Fang, J. Fang, J. Liao, J. Liao, G. Yarwood, H. Chen, H. Chen, Y. Wang, Y. Wang, L. Li, L. Li

“…<p>Elevated ground-level ozone concentrations have emerged as a major environmental issue in China. …”
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Insights into the significant increase in ozone during COVID-19 in a typical urban city of China by K. Zhang, K. Zhang, Z. Liu, Z. Liu, X. Zhang, X. Zhang, Q. Li, Q. Li, A. Jensen, A. Jensen, W. Tan, L. Huang, L. Huang, Y. Wang, Y. Wang, J. de Gouw, J. de Gouw, L. Li, L. Li

“…However, an obvious increase in ozone (O<span class="inline-formula">₃</span>) concentrations was found during the lockdown period in most urban areas of China. …”
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The unexpected high frequency of nocturnal surface ozone enhancement events over China: characteristics and mechanisms by C. He, C. He, X. Lu, X. Lu, H. Wang, H. Wang, H. Wang, H. Wang, Y. Li, G. He, G. He, Y. He, Y. He, Y. Wang, Y. Zhang, Y. Zhang, Y. Liu, Y. Liu, Q. Fan, Q. Fan, S. Fan, S. Fan

“…<p>Surface ozone concentrations typically peak during the daytime, driven by active photochemical production, and decrease gradually after sunset, due to chemical destruction and dry deposition. …”
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Measuring and modeling investigation of the net photochemical ozone production rate via an improved dual-channel reaction chamber technique by Y. Hao, Y. Hao, J. Zhou, J. Zhou, J.-P. Zhou, J.-P. Zhou, Y. Wang, Y. Wang, S. Yang, S. Yang, Y. Huangfu, Y. Huangfu, X.-B. Li, X.-B. Li, C. Zhang, A. Liu, Y. Wu, Y. Wu, Y. Zhou, Y. Zhou, S. Yang, S. Yang, Y. Peng, Y. Peng, J. Qi, J. Qi, X. He, X. He, X. Song, X. Song, Y. Chen, Y. Chen, B. Yuan, B. Yuan, M. Shao, M. Shao

“…<p>Current process-based research mainly uses box models to evaluate photochemical ozone production and destruction rates, and it is unclear to what extent the photochemical reaction mechanisms are elucidated. …”
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Cluster-based characterization of multi-dimensional tropospheric ozone variability in coastal regions: an analysis of lidar measurements and model results by C. Bernier, Y. Wang, G. Gronoff, G. Gronoff, T. Berkoff, K. E. Knowland, K. E. Knowland, J. T. Sullivan, R. Delgado, R. Delgado, V. Caicedo, V. Caicedo, B. Carroll, B. Carroll

“…<p>Coastal regions are susceptible to multiple complex dynamic and chemical mechanisms and emission sources that lead to frequently observed large tropospheric ozone variations. These large ozone variations occur on a mesoscale and have proven to be arduous to simulate using chemical transport models (CTMs). …”
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Long-term trend of surface ozone at a regional background station in eastern China 1991─2006: enhanced variability by Y. Wang, Z. Meng, J. Tang, T. Wang, P. Yan, W. Lin, X. Xu

“…Information about the long-term trends of surface and tropospheric ozone is important for assessing the impact of ozone on human health, vegetation, and climate. …”
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Understanding offshore high-ozone events during TRACER-AQ 2021 in Houston: insights from WRF–CAMx photochemical modeling by W. Li, Y. Wang, X. Liu, E. Soleimanian, T. Griggs, J. Flynn, P. Walter

“…<p>Mechanisms for high offshore ozone (<span class="inline-formula">O₃</span>) events in the Houston area have not been systematically examined due to limited <span class="inline-formula">O₃</span> measurements over water. …”
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Nighttime ozone in the lower boundary layer: insights from 3-year tower-based measurements in South China and regional air quality modeling by G. He, G. He, C. He, C. He, H. Wang, H. Wang, X. Lu, X. Lu, C. Pei, X. Qiu, C. Liu, C. Liu, Y. Wang, Y. Wang, N. Liu, N. Liu, J. Zhang, L. Lei, Y. Liu, Y. Liu, H. Wang, H. Wang, T. Deng, Q. Fan, Q. Fan, S. Fan, S. Fan

“…<p>Nighttime ozone in the lower boundary layer regulates atmospheric chemistry and surface ozone air quality, but our understanding of its vertical structure and impact is largely limited by the extreme sparsity of direct measurements. …”
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Evaluating WRF-GC v2.0 predictions of boundary layer height and vertical ozone profile during the 2021 TRACER-AQ campaign in Houston, Texas by X. Liu, Y. Wang, S. Wasti, W. Li, E. Soleimanian, J. Flynn, T. Griggs, S. Alvarez, J. T. Sullivan, M. Roots, L. Twigg, G. Gronoff, T. Berkoff, P. Walter, M. Estes, J. W. Hair, T. Shingler, A. J. Scarino, M. Fenn, L. Judd

“…The model underestimates free-tropospheric ozone (2–3 km aloft) by 9 %–22 % but overestimates near-ground ozone (<span class="inline-formula">&lt;50</span> m aloft) by 6 %-39 % during the two ozone episodes. …”
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Predicting peak daily maximum 8&thinsp;h ozone and linkages to emissions and meteorology in Southern California using machine learning methods (SoCAB-8HR V1.0) by Z. Gao, Y. Wang, P. Vasilakos, C. E. Ivey, C. E. Ivey, K. Do, K. Do, A. G. Russell

“…Often, it is the extreme values that are of interest for health and regulatory purposes (e.g., the National Ambient Air Quality Standard for ozone uses the annual maximum daily fourth highest 8 h average (MDA8) ozone), though such values are the most challenging to predict using empirical models. …”
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Measurement report: Production and loss of atmospheric formaldehyde at a suburban site of Shanghai in summertime by Y. Wu, J. Huo, G. Yang, Y. Wang, L. Wang, S. Wu, L. Yao, Q. Fu, L. Wang, L. Wang, L. Wang, L. Wang, L. Wang

“…<p>Formaldehyde (HCHO) is an important trace gas that affects the abundance of HO<span class="inline-formula">₂</span> radicals and ozone, leads to complex photochemical processes, and yields a variety of secondary atmospheric pollutants. …”
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Satellite-derived constraints on the effect of drought stress on biogenic isoprene emissions in the southeastern US by Y. Wang, N. Lin, W. Li, A. Guenther, J. C. Y. Lam, A. P. K. Tai, A. P. K. Tai, M. J. Potosnak, R. Seco

“…Here, we use the US Drought Monitor (USDM) as a weekly drought severity index and tropospheric columns of formaldehyde (HCHO), the key product of isoprene oxidation, retrieved from the Ozone Monitoring Instrument (OMI) to derive top-down constraints on the response of summertime isoprene emissions to drought stress in the southeastern United States (SE US), a region of high isoprene emissions that is also prone to drought. …”
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ESTIMATION OF BVOC EMISSIONS IN GUANGZHOU AND ITS SPATIAL-TEMPORAL VARIATIONS: PRELIMINARY RESULTS FROM GLOBEIS by L. Li, Y. Wang, Y. Zheng, Y. Zheng, T. Chen

“…Biogenic VOC emissions greatly exceed anthropogenic emissions and are regarded as significant precursors to secondary organic aerosol (SOA) and ozone. Using the Global Biosphere Emission and Interactions System (GloBEIS) model, 1&thinsp;&times;&thinsp;1&thinsp;km gridded and hourly BVOC emissions in Guangzhou were estimated for the year of 2012. …”
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Coupled mesoscale–microscale modeling of air quality in a polluted city using WRF-LES-Chem by Y. Wang, Y.-F. Ma, D. Muñoz-Esparza, J. Dai, C. W. Y. Li, P. Lichtig, R. C.-W. Tsang, C.-H. Liu, T. Wang, G. P. Brasseur, G. P. Brasseur, G. P. Brasseur

“…The results from the multi-resolution simulations at mesoscale and LES scales are evaluated by comparing them with ozone sounding profiles and surface observations. …”
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Urban stress-induced biogenic VOC emissions and SOA-forming potentials in Beijing by A. Ghirardo, A. Ghirardo, J. Xie, J. Xie, J. Xie, J. Xie, X. Zheng, Y. Wang, R. Grote, K. Block, J. Wildt, T. Mentel, A. Kiendler-Scharr, M. Hallquist, K. Butterbach-Bahl, J.-P. Schnitzler

“…Trees can significantly impact the urban air chemistry by the uptake and emission of reactive biogenic volatile organic compounds (BVOCs), which are involved in ozone and particle formation. Here we present the emission potentials of "constitutive" (cBVOCs) and "stress-induced" BVOCs (sBVOCs) from the dominant broadleaf woody plant species in the megacity of Beijing. …”
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An updated modeling framework to simulate Los Angeles air quality – Part 1: Model development, evaluation, and source apportionment by E. A. Pennington, Y. Wang, B. C. Schulze, B. C. Schulze, K. M. Seltzer, J. Yang, J. Yang, B. Zhao, B. Zhao, Z. Jiang, H. Shi, M. Venecek, D. Chau, B. N. Murphy, C. M. Kenseth, R. X. Ward, H. O. T. Pye, J. H. Seinfeld, J. H. Seinfeld

“…Evaluation of the CMAQ model shows that ozone is well predicted despite inaccuracies in nitrogen oxide (NO<span class="inline-formula">_<i>x</i></span>) predictions. …”
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Background nitrogen dioxide (NO₂) over the United States and its implications for satellite observations and trends: effects of nitrate photolysis, aircraft, and open fi... by R. Dang, D. J. Jacob, V. Shah, V. Shah, V. Shah, S. D. Eastham, S. D. Eastham, T. M. Fritz, L. J. Mickley, T. Liu, Y. Wang, Y. Wang, J. Wang, J. Wang

“…Tropospheric NO<span class="inline-formula">₂</span> vertical column densities (VCDs) from the spaceborne Ozone Monitoring Instrument (OMI) averaged over the contiguous US (CONUS) show no trend after 2009, despite sustained decreases in anthropogenic NO<span class="inline-formula">_<i>x</i></span> emissions, implying an important and rising contribution from the free tropospheric background. …”
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O₃ and PAN in southern Tibetan Plateau determined by distinct physical and chemical processes by W. Xu, Y. Bian, W. Lin, Y. Zhang, Y. Zhang, Y. Wang, Y. Wang, Z. Ma, X. Zhang, X. Zhang, G. Zhang, C. Ye, X. Xu

“…<p>Tropospheric ozone (O<span class="inline-formula">₃</span>) and peroxyacetyl nitrate (PAN) are both photochemical pollutants harmful to the ecological environment and human health. …”
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