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<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7375</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2023-672</article-id>
<title-group>
<article-title>The influence of springtime Arctic ozone recovery on stratospheric and surface climate</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Chiodo</surname>
<given-names>Gabriel</given-names>
<ext-link>https://orcid.org/0000-0002-8079-6314</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Friedel</surname>
<given-names>Marina</given-names>
<ext-link>https://orcid.org/0000-0001-7739-4691</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Seeber</surname>
<given-names>Svenja</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Stenke</surname>
<given-names>Andrea</given-names>
<ext-link>https://orcid.org/0000-0002-5916-4013</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Sukhodolov</surname>
<given-names>Timofei</given-names>
<ext-link>https://orcid.org/0000-0001-7100-738X</ext-link>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Zilker</surname>
<given-names>Franziska</given-names>
<ext-link>https://orcid.org/0009-0007-9104-9529</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Institute of Atmospheric and Climate Science, ETH Zürich, Zurich, 8092, Switzerland</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center, Davos, Switzerland</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Ozone layer and upper atmosphere research laboratory, St. Petersburg State University, St. Petersburg, Russia</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>These authors contributed equally to this work.</addr-line>
</aff>
<pub-date pub-type="epub">
<day>15</day>
<month>05</month>
<year>2023</year>
</pub-date>
<volume>2023</volume>
<fpage>1</fpage>
<lpage>30</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2023 Gabriel Chiodo et al.</copyright-statement>
<copyright-year>2023</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2023/egusphere-2023-672/">This article is available from https://egusphere.copernicus.org/preprints/2023/egusphere-2023-672/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2023/egusphere-2023-672/egusphere-2023-672.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2023/egusphere-2023-672/egusphere-2023-672.pdf</self-uri>
<abstract>
<p>&lt;p&gt;Stratospheric ozone is expected to recover by mid-century due to the success of the Montreal Protocol in regulating the emission of ozone-depleting substances (ODSs). In the Arctic, ozone abundances are projected to surpass historical levels due to the combined effect of decreasing ODSs and elevated greenhouse gases (GHGs). While ozone recovery has been shown to be a major driver of future surface climate in the Southern Hemisphere during summertime, the dynamical and climatic impacts of elevated ozone levels in the Arctic have not been investigated. In this study, we use two chemistry climate models (SOCOL-MPIOM and CESM-WACCM) to assess the climatic impacts of Arctic ozone recovery on stratospheric dynamics and surface climate in the Northern Hemisphere (NH) during the 21&lt;sup&gt;st&lt;/sup&gt; century. Under the high-emission scenario (RCP8.5) examined in this work, Arctic ozone returns to pre-industrial levels by the middle of the century. Thereby, it warms the lower Arctic stratosphere, reduces the strength of the polar vortex, advancing its breakdown, and weakening the Brewer-Dobson circulation. In the troposphere, Arctic ozone recovery induces a negative phase of the Arctic Oscillation, pushing the jet equatorward over the Atlantic. These impacts of ozone recovery in the NH are smaller than the effects of GHGs, but they are remarkably robust among the two models employed in this study, cancelling out some of the GHG effects. Taken together, our results indicate that Arctic ozone recovery actively shapes the projected changes in the stratospheric circulation and their coupling to the troposphere, thereby playing an important and previously unrecognized role as driver of the large-scale atmospheric circulation response to climate change&lt;/p&gt;</p>
</abstract>
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<funding-group>
<award-group id="gs1">
<funding-source>Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung</funding-source>
<award-id>PZ00P2_180043</award-id>
<award-id>PP00P2_198896</award-id>
</award-group>
</funding-group>
</article-meta>
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