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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="research-article" 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">681746</article-id><article-id pub-id-type="doi">10.31857/S0002351524060065</article-id><article-id pub-id-type="edn">HUYKHN</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Determination of total ozone column from spectral measurements of IKFS-2 during 2015–2022.</article-title><trans-title-group xml:lang="ru"><trans-title>Определение общего содержания озона из спектральных измерений ИКФС-2 в 2015–2022 гг.</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Polyakov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Поляков</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.v.polyakov@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kriukovskikh</surname><given-names>E. P.</given-names></name><name xml:lang="ru"><surname>Крюковских</surname><given-names>Е. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kriukovskikh1967@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Virolainen</surname><given-names>Ya. A.</given-names></name><name xml:lang="ru"><surname>Виролайнен</surname><given-names>Я. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>yana.virolainen@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nerobelov</surname><given-names>G. M.</given-names></name><name xml:lang="ru"><surname>Неробелов</surname><given-names>Г. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Scientific Research Centre for Ecological Safety</p></bio><bio xml:lang="ru"><p>НИЦ экологической безопасности</p></bio><email>akulishe95@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kozlov</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Козлов</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dakozlov@kerc.msk.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Timofeyev</surname><given-names>Yu. M.</given-names></name><name xml:lang="ru"><surname>Тимофеев</surname><given-names>Ю. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>y.timofeev@spbu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">St Petersburg University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">SPC RAS</institution></aff><aff><institution xml:lang="ru">СПб ФИЦ РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian State Hydrometeorological University</institution></aff><aff><institution xml:lang="ru">Российский государственный гидрометеорологический университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Keldysh Research Center</institution></aff><aff><institution xml:lang="ru">Исследовательский центр имени М.В. Келдыша</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-03" publication-format="electronic"><day>03</day><month>12</month><year>2024</year></pub-date><volume>60</volume><issue>6</issue><fpage>947</fpage><lpage>958</lpage><history><date date-type="received" iso-8601-date="2025-05-31"><day>31</day><month>05</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</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/681746">https://journals.eco-vector.com/0002-3515/article/view/681746</self-uri><abstract xml:lang="en"><p>The results of determining the ozone total column (OTC) from the spectra of the outgoing thermal infrared radiation measured by the IKFS-2 instrument from the “Meteor-M” No. 2 spacecraft during 8 years of measurements are presented. The previously developed methodology for the interpretation of spectral measurements made in 2015–2020 with a scanning bandwidth (SBW) of 1000 km is applied to the measurements in 2021–2022 with SBW of 1500 km. It is shown that the observed increase in the differences between the IKFS-2 data and the results of independent measurements is caused not by the expansion of the OTC variability statistics, but by the increase in the range of scanning angle variation. After finalization of the methodology for the measurements with a 1500–km SBW, the comparison with independent data showed that the standard deviations of differences with the results of ground and satellite measurements for all 8 years do not exceed 3% and did not increase compared to the first 6 years of measurements. To analyze the results in the polar regions, the OTC values obtained from the IKFS-2 spectra are compared with the ozonesonde data, which are performed continuously throughout the year, including the polar night. A good qualitative agreement of the IKFS-2 data and ozone sounding data, including winter-spring periods of extreme OTC decrease at high latitudes of both hemispheres, is shown. The standard deviations of the differences between the IKFS-2 data and the OTC values from ozone sounding data were from 5.3 to 11 % (17–33 D.U.) for different stations, or on average for all stations 7.9 %, which is consistent with the uncertainty of the estimates of the integrated ozone content in the vertical column from ozonesonde data.</p></abstract><trans-abstract xml:lang="ru"><p>Представлены результаты определения общего содержания озона (ОСО) из спектров уходящего теплового инфракрасного излучения, измеренных прибором ИКФС-2 с борта космического аппарата «Метеор-М» № 2 за 8 лет измерений. Разработанная ранее методика для интерпретации спектральных измерений, выполненных в 2015–2020 гг. с шириной полосы сканирования (ШПС) 1000 км, применена к измерениям 2021–2022 гг. с ШПС 1500 км. Показано, что наблюдаемый при этом рост разностей между данными ИКФС-2 и результатами независимых измерений вызван не расширением статистики изменчивости ОСО, а увеличением диапазона изменения угла сканирования. После доработки методики для измерений с ШПС 1500 км сравнение с независимыми данными показало, что среднеквадратичные отклонения разностей с результатами наземных и спутниковых измерений за все 8 лет не превосходят 3% и не увеличились по сравнению с первыми 6 годами измерений. Для анализа результатов в полярных областях полученные из спектров ИКФС-2 значения ОСО сравниваются с данными озонозондирования, которое выполняется непрерывно в течение всего года, включая полярную ночь. Показано хорошее качественное согласие данных ИКФС-2 и озонозондирования, включая зимне-весенние периоды экстремального уменьшения ОСО в высоких широтах обоих полушарий. Среднеквадратичные отклонения разностей данных ИКФС-2 и величин ОСО по данным озонозондирования составили для разных станций от 5.3 до 11% (17–33 е. Д.), или в среднем по всем станциям 7.9%, что согласуется с неопределенностью оценок интегрального содержания озона в вертикальном столбе по данным озонозондирования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>remote sensing of the atmosphere</kwd><kwd>atmospheric ozone</kwd><kwd>IKFS-2</kwd><kwd>ozone total column</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дистанционное зондирование атмосферы</kwd><kwd>атмосферный озон</kwd><kwd>ИКФС-2</kwd><kwd>общее содержание озона</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of science and higher education of the Russian Federation</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Андреев В.В., Баженов О.Е., Белан Б.Д., Варгин П.Н., Груздев А.Н., Еланский Н.Ф., Жамсуева Г.С., Заяханов А.С., Котельников С.Н., Кузнецова И.Н., Куликов М.Ю., Невзоров А.В., Оболкин В.А., Постыляков О.В., Розанов Е.В., Скороход А.И., Соломатникова А.А., Степанов Е.В., Тимофеев Ю.М., Фейгин А.М., Ходжер Т.В. 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