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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ESSDD</journal-id>
<journal-title-group>
<journal-title>Earth System Science Data Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">ESSDD</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Earth Syst. Sci. Data Discuss.</abbrev-journal-title>
</journal-title-group>
<publisher><publisher-name></publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/essd-2026-752</article-id>
<title-group>
<article-title>Updated historical (1750&amp;ndash;2023) trends of reactive gases and aerosols from the Community Earth atmospheric Data System (CEDS)</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hoesly</surname>
<given-names>Rachel</given-names>
<ext-link>https://orcid.org/0000-0003-0965-2729</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Smith</surname>
<given-names>Steven</given-names>
<ext-link>https://orcid.org/0000-0003-3248-5607</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ashan</surname>
<given-names>Hamza</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Prime</surname>
<given-names>Noah</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>O'Rourke</surname>
<given-names>Patrick</given-names>
<ext-link>https://orcid.org/0000-0002-0357-112X</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Dorheim</surname>
<given-names>Kalyn</given-names>
<ext-link>https://orcid.org/0000-0001-8093-8397</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Crippa</surname>
<given-names>Monica</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Klimont</surname>
<given-names>Zbigniew</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Guizzardi</surname>
<given-names>Diego</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Feng</surname>
<given-names>Leyang</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Harkins</surname>
<given-names>Colin</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</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>McDonald</surname>
<given-names>Brian C.</given-names>
<ext-link>https://orcid.org/0000-0001-8600-5096</ext-link>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wang</surname>
<given-names>Shuxiao</given-names>
<ext-link>https://orcid.org/0000-0001-9727-1963</ext-link>
</name>
<xref ref-type="aff" rid="aff8">
<sup>8</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Joint Global Change Research Institute (JGCRI), Pacific Northwest National Lab, College Park, MD, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Center for Global Sustainability, University of Maryland, College Park, MD, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Joint Research Centre, European Commission, Ispra, Italy</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>National Oceanic and Atmospheric Administration Chemical Sciences Laboratory, Boulder, CO, USA</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO</addr-line>
</aff>
<aff id="aff8">
<label>8</label>
<addr-line>State Key Laboratory of Regional Environment and Sustainability, School of Environment, Tsinghua University, Beijing, China</addr-line>
</aff>
<pub-date pub-type="epub">
<day>03</day>
<month>11</month>
<year>2026</year>
</pub-date>
<volume>2026</volume>
<fpage>1</fpage>
<lpage>28</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Rachel Hoesly et al.</copyright-statement>
<copyright-year>2026</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://essd.copernicus.org/preprints/essd-2026-752/">This article is available from https://essd.copernicus.org/preprints/essd-2026-752/</self-uri>
<self-uri xlink:href="https://essd.copernicus.org/preprints/essd-2026-752/essd-2026-752.pdf">The full text article is available as a PDF file from https://essd.copernicus.org/preprints/essd-2026-752/essd-2026-752.pdf</self-uri>
<abstract>
<p>Estimates of anthropogenic air pollutants and reactive gases remain essential for air quality, weather and other earth systems modeling. Here we present an updated historical time series (1750&amp;ndash;2023) produced by the Community Earth atmospheric Data System (CEDS), version CEDS v_2025_03_18, which is widely used in national and international models and modeling exercises. This dataset provides historical estimates of anthropogenic chemically reactive atmospheric gases (carbon monoxide &amp;ndash; CO, methane &amp;ndash; CH&lt;sub&gt;4&lt;/sub&gt;, ammonia &amp;ndash; NH&lt;sub&gt;3&lt;/sub&gt;, nitrous oxides &amp;ndash; NO&lt;sub&gt;X&lt;/sub&gt;, sulfur dioxide &amp;ndash; SO&lt;sub&gt;2&lt;/sub&gt;, and non-methane volatile orgaic compounds &amp;ndash; NMVOCs), carbonaceous aerosols (black carbon &amp;ndash; BC, and organic carbon &amp;ndash; OC), as well as carbon dioxide &amp;ndash; CO&lt;sub&gt;2&lt;/sub&gt; and nitrogen dioxide &amp;ndash; N&lt;sub&gt;2&lt;/sub&gt;O. Aggregate annual estimates are available by 220 countries, 62 sectors, and 8 fuels (in addition to process emissions). Gridded data are available for 9 final gridding sectors with monthly seasonality and VOC speciation in netcdf v4 (HDFv5) format with CF-compliant metadata at 0.5-degree resolution for the full time series and downscaled to 0.1 degree from 1980 forward.</p>
</abstract>
<counts><page-count count="28"/></counts>
<funding-group>
<award-group id="gs1">
<funding-source>U.S. Department of Energy</funding-source>
<award-id>DE-AC05-76RLO1830</award-id>
</award-group>
<award-group id="gs2">
<funding-source>National Aeronautics and Space Administration</funding-source>
<award-id>NNH15AZ64I</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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