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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"></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-2026-2561</article-id>
<title-group>
<article-title>Changes in Arctic sea ice drift speed over the last 130 years</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Sinnhuber</surname>
<given-names>Björn-Martin</given-names>
<ext-link>https://orcid.org/0000-0001-9608-7320</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>13</day>
<month>05</month>
<year>2026</year>
</pub-date>
<volume>2026</volume>
<fpage>1</fpage>
<lpage>21</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Björn-Martin Sinnhuber</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://egusphere.copernicus.org/preprints/2026/egusphere-2026-2561/">This article is available from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-2561/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-2561/egusphere-2026-2561.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-2561/egusphere-2026-2561.pdf</self-uri>
<abstract>
<p>The Arctic transpolar sea ice drift speed shows a pronounced increase over past decades, one of many manifestations of Arctic climate change. However, little is known so far how the drift changed in earlier periods. Here I use data from historical drift expeditions, in particular from the &lt;em&gt;Fram&lt;/em&gt; in 1893&amp;ndash;96, the &lt;em&gt;Sedov&lt;/em&gt; in 1937&amp;ndash;40, the &lt;em&gt;Tara&lt;/em&gt; in 2007&amp;ndash;08, and the &lt;em&gt;Polarstern&lt;/em&gt; during MOSAiC in 2019&amp;ndash;20, as well as from the Soviet/Russian North Pole drift stations, to derive a 130-year record of Arctic transpolar drift speed. The transpolar drift speed already increased significantly during the early 20&lt;sup&gt;th&lt;/sup&gt; century warming, followed by a period of slowing drift in the 1950s&amp;ndash;70s and a strong increase in recent decades, closely following the evolution of Arctic mean temperatures. The observed fractal scaling of the drifts can be explained quantitatively by a Brownian motion random walk process that includes temporal auto-correlation and a mean drift term due to currents and prevailing winds. Comparisons of the sea ice drift speeds with near surface wind observations reveal that the long-term changes in drift speed are not primarily caused by changes in wind speed.</p>
</abstract>
<counts><page-count count="21"/></counts>
<funding-group>
<award-group id="gs1">
<funding-source>Helmholtz Association</funding-source>
<award-id>Programme “Changing Earth – Sustaining our Future”</award-id>
</award-group>
</funding-group>
</article-meta>
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