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Atmospheric ionization sources can ionize\n SO<\/jats:italic>\n 2<\/jats:sub>\n into excited states of\n \n , which quickly reacts with trace gases in the stratosphere. In this work we explore the reaction of\n \n with\n \n excited by tunable synchrotron radiation, leading to\n \n (\n \n ), where H contributes to\n O<\/jats:italic>\n 3<\/jats:sub>\n depletion and\n OH<\/jats:italic>\n formation. Density Functional Theory and Variational Transition State Theory have been used to investigate the dynamics of the title barrierless and exothermic reaction. The present results suggest that solar geoengineering models should test the reactivity of\n \n with major trace gases in the stratosphere, such as\n H<\/jats:italic>\n 2<\/jats:sub>\n since this is a relevant channel for the\n OH<\/jats:italic>\n formation during the nighttime when there is not\n OH<\/jats:italic>\n production by sunlight.\n OH<\/jats:italic>\n oxides\n SO<\/jats:italic>\n 2<\/jats:sub>\n , triggering the chemical reactions leading to\n H<\/jats:italic>\n 2<\/jats:sub>\n SO<\/jats:italic>\n 4<\/jats:sub>\n aerosol.\n <\/jats:p>","DOI":"10.1002\/cphc.202000194","type":"journal-article","created":{"date-parts":[[2020,3,23]],"date-time":"2020-03-23T15:09:36Z","timestamp":1584976176000},"page":"1146-1156","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The Reaction of Sulfur Dioxide Radical Cation with Hydrogen and its Relevance in Solar Geoengineering Models"],"prefix":"10.1002","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5795-4700","authenticated-orcid":false,"given":"Mauro","family":"Satta","sequence":"first","affiliation":[{"name":"ISMN (CNR) c\/o Dipartimento di Chimica Sapienza Universita' di Roma Pl.e Aldo Moro 5 Roma Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8170-1121","authenticated-orcid":false,"given":"Antonella","family":"Cartoni","sequence":"additional","affiliation":[{"name":"Dipartimento di Chimica, Sapienza Universit\u00e1 di Roma Pl.e Aldo Moro 5 Roma Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniele","family":"Catone","sequence":"additional","affiliation":[{"name":"CNR-ISM, Area della Ricerca di Tor Vergata Via del Fosso del Cavaliere Roma Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mattea Carmen","family":"Castrovilli","sequence":"additional","affiliation":[{"name":"CNR-ISM, Area della Ricerca di Roma 1 Via Salaria Km 29,300 Monterotondo Scalo (RM) Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paola","family":"Bolognesi","sequence":"additional","affiliation":[{"name":"CNR-ISM, Area della Ricerca di Roma 1 Via Salaria Km 29,300 Monterotondo Scalo (RM) Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Zema","sequence":"additional","affiliation":[{"name":"CNR-ISM, Area della Ricerca di Tor Vergata Via del Fosso del Cavaliere Roma Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2990-7330","authenticated-orcid":false,"given":"Lorenzo","family":"Avaldi","sequence":"additional","affiliation":[{"name":"CNR-ISM, Area della Ricerca di Roma 1 Via Salaria Km 29,300 Monterotondo Scalo (RM) Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,4,29]]},"reference":[{"key":"e_1_2_7_1_1","unstructured":"Climate Intervention: Reflecting Sunlight to Cool Earth Washington DC: The National Academies Press 2015."},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-earth-042711-105548"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00162777"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.energy.25.1.245"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1029\/2008JD010050"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41558-019-0398-8"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1088\/1748-9326\/4\/4\/045108"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10584-006-9101-y"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aan3317"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/d41586-019-00717-6"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-018-05938-3"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-017-01606-0"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41559-017-0431-0"},{"key":"e_1_2_7_14_1","unstructured":"J.\u2005B. 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