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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Izvestiya, Atmospheric and Oceanic Physics</journal-id><journal-title-group><journal-title xml:lang="en">Izvestiya, Atmospheric and Oceanic Physics</journal-title><trans-title-group xml:lang="ru"><trans-title>Известия РАН. Физика атмосферы и океана</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0002-3515</issn><issn publication-format="electronic">3034-6487</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">658279</article-id><article-id pub-id-type="doi">10.31857/S0002351523050036</article-id><article-id pub-id-type="edn">XUSLEP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Near-Surface Air Content of CH<sub>4</sub>, СО<sub>2</sub>, СО and δ<sup>13</sup>C–СH<sub>4</sub> in Moscow According to <italic>In Situ</italic> Observations</article-title><trans-title-group xml:lang="ru"><trans-title>Содержание CH<sub>4</sub>, СО<sub>2</sub>, СО и δ<sup>13</sup>C–СH<sub>4</sub> в приземном воздухе по измерениям на станции ИФА им. А.М. Обухова РАН в Москве</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Berezina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Березина</surname><given-names>Е. В.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vasileva</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Васильева</surname><given-names>А. В.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Moiseenko</surname><given-names>K. B.</given-names></name><name xml:lang="ru"><surname>Моисеенко</surname><given-names>К. Б.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pankratova</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Панкратова</surname><given-names>Н. В.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Skorokhod</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Скороход</surname><given-names>А. И.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belikov</surname><given-names>I. B.</given-names></name><name xml:lang="ru"><surname>Беликов</surname><given-names>И. Б.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belousov</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Белоусов</surname><given-names>В. А.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Artamonov</surname><given-names>A. Y.</given-names></name><name xml:lang="ru"><surname>Артамонов</surname><given-names>А. Ю.</given-names></name></name-alternatives><email>e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт физики атмосферы им. А.М. Обухова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">University of Vienna</institution></aff><aff><institution xml:lang="ru">Университет Вены</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-09-01" publication-format="electronic"><day>01</day><month>09</month><year>2023</year></pub-date><volume>59</volume><issue>5</issue><fpage>569</fpage><lpage>584</lpage><history><date date-type="received" iso-8601-date="2025-02-20"><day>20</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Е.В. Березина, А.В. Васильева, К.Б. Моисеенко, Н.В. Панкратова, А.И. Скороход, И.Б. Беликов, В.А. Белоусов, А.Ю. Артамонов</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Е.В. Березина, А.В. Васильева, К.Б. Моисеенко, Н.В. Панкратова, А.И. Скороход, И.Б. Беликов, В.А. Белоусов, А.Ю. Артамонов</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Е.В. Березина, А.В. Васильева, К.Б. Моисеенко, Н.В. Панкратова, А.И. Скороход, И.Б. Беликов, В.А. Белоусов, А.Ю. Артамонов</copyright-holder><copyright-holder xml:lang="ru">Е.В. Березина, А.В. Васильева, К.Б. Моисеенко, Н.В. Панкратова, А.И. Скороход, И.Б. Беликов, В.А. Белоусов, А.Ю. Артамонов</copyright-holder><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/0002-3515/article/view/658279">https://journals.eco-vector.com/0002-3515/article/view/658279</self-uri><abstract xml:lang="en"><p id="idm45181323658912">Near-surface observations of air mixing ratios of CH<sub>4</sub>, CO<sub>2</sub>, CO, benzene, and δ<sup>13</sup>C–СH<sub>4</sub> at the IAP-RAS site in Moscow for years 2018–2020 are analyzed to describe typical interannual, seasonal, and diurnal variations. The highest mixing ratios of CH<sub>4</sub>, CO<sub>2</sub>, and CO (above 2.2, 430, and 0.2 ppmv, respectively) are mostly observed in winter as a result of the seasonal maxima in the emissions of these gases from motor transport and energy sectors and the slow removal of the emissions from the near-surface air due to suppressed turbulent vertical mixing in the cold season. The highest impact of local and distant microbial emissions on the CН<sub>4</sub> mixing ratios is observed in summer, as follows from the low δ<sup>13</sup>C–СH<sub>4</sub> values from –50 to –60‰. The highest increase in the mixing ratios of all the measured species is associated with air transport from the industrial area located at the east – southeast from the site. The estimated emission ratios CH<sub>4</sub>/benzene = = 0.52–0.54 ppmv/ppbv, СH<sub>4</sub>/СО = 0.56–0.75 ppmv/ppmv, СО<sub>2</sub>/benzene = 77–93 ppmv/ppbv, СО<sub>2</sub>/СО = = 81–131 ppmv/ppmv, СО/benzene = 0.65–1.11 ppmv/ppbv show the prevailing contribution of emissions from motor transport and energy sectors to the content of trace gases in the near-surface air in Moscow and are consistent with other similar estimates published on the basis of observations in large cities.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323652448">Приведены результаты анализа межгодовых, сезонных и суточных вариаций отношений смеси CH<sub>4</sub>, CO<sub>2</sub>, CO, бензола и δ<sup>13</sup>C–СH<sub>4</sub> в приземном воздухе г. Москвы по измерениям на станции ИФА им. А.М. Обухова РАН в 2018–2020 гг. Годовой максимум содержания CH<sub>4</sub>, CO<sub>2</sub> и CO (&gt;2.2, 430 и 0.20 млн<sup>–1</sup>, соответственно) приходится на зимние месяцы в связи с сезонным ростом антропогенной нагрузки от основных источников городского загрязнения – автотранспорта и теплоэнергетического сектора, и уменьшением роли вертикального перемешивания воздуха. Наибольший вклад локальных и удаленных микробных источников в содержание CН<sub>4</sub> отмечен в летние месяцы на фоне низких значений δ<sup>13</sup>C–СH<sub>4</sub> (–50…–60‰). Во все сезоны, пики приземных концентраций CH<sub>4</sub>, CO<sub>2</sub> и CO, продолжительностью до нескольких часов, обусловлены переносом от промышленных объектов в В–ЮВ секторе. Рассчитанные средние эмиссионные отношения в городском воздухе составили: CH<sub>4</sub>/бензол = 0.52–0.54 млн<sup>–1</sup>/млрд<sup>–1</sup>, СH<sub>4</sub>/СО = 0.56–0.75 млн<sup>–1</sup>/млн<sup>–1</sup>, СО<sub>2</sub>/бензол = = 77–93 млн<sup>–1</sup>/млрд<sup>–1</sup>, СО<sub>2</sub>/СО = 81–131 млн<sup>–1</sup>/млн<sup>–1</sup>, СО/бензол = 0.65–1.11 млн<sup>–1</sup>/млрд<sup>–1</sup>. Приведенные отношения характеризуют преобладающий вклад эмиссий от автотранспорта и теплоэнергетического сектора и могут быть использованы для уточнения абсолютных величин выбросов, в том числе на основе существующих инвентаризаций источников антропогенного загрязнения воздуха.</p></trans-abstract><kwd-group xml:lang="en"><kwd>trace gases</kwd><kwd>megacity</kwd><kwd>isotopic signature</kwd><kwd>urban pollution</kwd><kwd>emission ratios</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>малые газовые примеси</kwd><kwd>мегаполис</kwd><kwd>источники загрязнения</kwd><kwd>изотопная сигнатура</kwd><kwd>эмиссионные отношения</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Еланский Н.Ф., Шилкин А.В., Пономарев Н.А., Захарова П.В., Качко М.Д., Поляков Т.И. Пространственно-временные вариации содержания загрязняющих примесей в воздушном бассейне Москвы и их эмиссии // Изв. РАН. Физика атмосферы и океана. 2022. Т. 58. 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