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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gesj</journal-id><journal-title-group><journal-title xml:lang="en">GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</journal-title><trans-title-group xml:lang="ru"><trans-title>GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-9388</issn><issn pub-type="epub">2542-1565</issn><publisher><publisher-name>Russian Geographical Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24057/2071-9388-2024-3364</article-id><article-id custom-type="elpub" pub-id-type="custom">gesj-3849</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>REGULAR ISSUE</subject></subj-group></article-categories><title-group><article-title>Surface ozone in the industrial city of Chelyabinsk, Russia</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Krupnova</surname><given-names>Tatyana G.</given-names></name></name-alternatives><bio xml:lang="en"><p>76 Prospect Lenina, Chelyabinsk, 454080</p></bio><email xlink:type="simple">krupnovatg@susu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Rakova</surname><given-names>Olga V.</given-names></name></name-alternatives><bio xml:lang="en"><p>76 Prospect Lenina, Chelyabinsk, 454080</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Simakhina</surname><given-names>Valeria I.</given-names></name></name-alternatives><bio xml:lang="en"><p>76 Prospect Lenina, Chelyabinsk, 454080</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Vykhodtseva</surname><given-names>Ekaterina A.</given-names></name></name-alternatives><bio xml:lang="en"><p>15 Vitebskaya st., Chelyabinsk, 454080</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Kochegorov</surname><given-names>Valeriy M.</given-names></name></name-alternatives><bio xml:lang="en"><p>15 Vitebskaya st., Chelyabinsk, 454080</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Institute of Natural Sciences and Mathematics, South Ural State University</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Chelyabinsk Center for Hydrometeorology and Environmental Monitoring, Federal Service for Hydrometeorology and Environmental Monitoring (Rosgidromet)</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>16</day><month>01</month><year>2025</year></pub-date><volume>17</volume><issue>4</issue><fpage>223</fpage><lpage>234</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Krupnova T.G., Rakova O.V., Simakhina V.I., Vykhodtseva E.A., Kochegorov V.M., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Krupnova T.G., Rakova O.V., Simakhina V.I., Vykhodtseva E.A., Kochegorov V.M.</copyright-holder><copyright-holder xml:lang="en">Krupnova T.G., Rakova O.V., Simakhina V.I., Vykhodtseva E.A., Kochegorov V.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://ges.rgo.ru/jour/article/view/3849">https://ges.rgo.ru/jour/article/view/3849</self-uri><abstract><p>This work studies the variations in daily and seasonal concentrations of surface ozone (O3), and nitrogen oxides (NO and NO 2) as its precursors in Chelyabinsk, a large industrial city in Russia. A monitoring station located outside the zone of influence of large industrial and transport local sources of air pollution was chosen for the research. The research was carried out during 2019, which can also be considered as a “background” period, because in 2020, during the COVID-19 lockdown, there was a decrease in concentrations of precursors. However, in 2022–2024 concentrations of precursors increased due to increased production capacity. Daily O3 variations are characterized by three peaks that correlate with changes in concentrations of nitrogen oxides (NOx) determined by peak loads and emission intensity of thermal power stations. There are two seasonal peaks of surface O3 concentrations. The spring peak in March is caused by natural processes. In March 2019, an advection of an air mass with different properties and gas composition was observed from areas with powerful sources of precursor gases or saturated with O3 from the south (areas in Kazakhstan). During episodes of high O3 levels, Chelyabinsk was located on the crest of a cyclone, in the warm sector, where low-level jets formed. The summer maximum of surface O3 in June was caused by photochemical reactions during anticyclones and prolonged inversions.</p></abstract><kwd-group xml:lang="en"><kwd>surface ozone</kwd><kwd>nitrogen oxides</kwd><kwd>temperature inversion</kwd><kwd>low-level jets</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This study was supported by grant from the Russian Science Foundation, project 24-27-20017 and Chelyabinsk oblast.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Andreev V.V., Arshinov M.Y., Belan B.D., Davydov D.K., Elansky N.F., Zhamsueva G.S. et al. (2021). Surface ozone concentration over Russian territory in the first half of 2020. 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