Articles | Volume 16, issue 11
https://doi.org/10.5194/bg-16-2247-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-2247-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Jun 2019
Research article |
| 04 Jun 2019
| 04 Jun 2019
Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S)
Eunmi Park
CORRESPONDING AUTHOR
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
MARUM – Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
Department of Geosciences, University of Bremen, 28334 Bremen,
Germany
Jens Hefter
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
Gerhard Fischer
MARUM – Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
Department of Geosciences, University of Bremen, 28334 Bremen,
Germany
Morten Hvitfeldt Iversen
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
MARUM – Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
Simon Ramondenc
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
MARUM – Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
Eva-Maria Nöthig
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
Gesine Mollenhauer
Alfred Wegener Institute, Helmholtz Center for Polar and Marine
Sciences, 27570 Bremerhaven, Germany
MARUM – Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
Department of Geosciences, University of Bremen, 28334 Bremen,
Germany
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Latest update: 22 Jul 2025
Short summary
We analyzed GDGT-based proxy temperatures in the polar oceans. In the eastern Fram Strait (79° N), the nutrient distribution may determine the depth habit of Thaumarchaeota and thus the proxy temperature. In the Antarctic Polar Front (50° S), the contribution of Euryarchaeota or the nonlinear correlation between the proxy values and temperatures may cause the warm biases of the proxy temperatures relative to SSTs.
We analyzed GDGT-based proxy temperatures in the polar oceans. In the eastern Fram Strait...
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