Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 3
Articles | Volume 22, issue 3
https://doi.org/10.5194/cp-22-585-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-585-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 3
Research article
 | 
12 Mar 2026
Research article |  | 12 Mar 2026

New isoprenoid GDGT index as a water mass and temperature proxy in the Southern Ocean

Hana Ishii, Osamu Seki, Masanobu Yamamoto, and Bella Duncan

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Short summary
We explore the utility of the archaeal-derived lipid biomarker as paleoenvironmental proxies in the Southern Ocean. Based on a reanalysis of the Southern Ocean dataset, we propose a new indicator for reconstructing zonal water mass movements in the Southern Ocean and temperatures in the Antarctic Zone. Applying this method to late Pleistocene sediment cores validates its reliability, confirming a valuable new tool for reconstructing the paleoenvironment of the Southern Ocean.
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