Climate of the Past
Climate of the Past
CP
Articles | Volume 21, issue 7
Articles | Volume 21, issue 7
https://doi.org/10.5194/cp-21-1323-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-1323-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 7
Research article
 | 
23 Jul 2025
Research article |  | 23 Jul 2025

Aeolian dust and diatoms at Roosevelt Island (Ross Sea, Antarctica) over the last 2 millennia reveal the local expression of climate changes and the history of the Ross Sea polynya

Serena Lagorio, Barbara Delmonte, Dieter Tetzner, Elisa Malinverno, Giovanni Baccolo, Barbara Stenni, Massimo Frezzotti, Valter Maggi, and Nancy Bertler

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Short summary
Aeolian diatoms and dust in the Antarctic Roosevelt Island Climate Evolution project (RICE) ice core allow the reconstruction of atmospheric circulation and climate variability in the Eastern Ross Sea over the past 2 millennia. Since about 1470 CE and during the Little Ice Age, the site experienced a rapid atmospheric circulation reorganization related to the development of the Roosevelt Island polynya, the eastward protrusion of the Ross Sea polynya that significantly impacted the regional climate dynamics of the Ross Sea area.
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