Articles | Volume 21, issue 4
https://doi.org/10.5194/cp-21-753-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-753-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Apr 2025
Research article |
| 04 Apr 2025
| 04 Apr 2025
Environmental controls of rapid terrestrial organic matter mobilization to the western Laptev Sea since the Last Deglaciation
Tsai-Wen Lin
CORRESPONDING AUTHOR
Marine Geochemistry Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Department of Geosciences, University Bremen, 28334, Bremen, Germany
Tommaso Tesi
Institute of Polar Sciences, National Research Council, 40129, Bologna, Italy
Jens Hefter
Marine Geochemistry Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Hendrik Grotheer
Marine Geochemistry Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Department of Geosciences, University Bremen, 28334, Bremen, Germany
MARUM Centre for Marine Environmental Sciences, University Bremen, 28334, Bremen, Germany
Jutta Wollenburg
Marine Biogeosciences Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Florian Adolphi
Marine Geochemistry Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Department of Geosciences, University Bremen, 28334, Bremen, Germany
MARUM Centre for Marine Environmental Sciences, University Bremen, 28334, Bremen, Germany
Henning A. Bauch
Marine Geology Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Research Division 1: Ocean Circulation and Climate Dynamics, GEOMAR, Helmholtz Centre for Ocean Research, 24148, Kiel, Germany
Alessio Nogarotto
Institute of Polar Sciences, National Research Council, 40129, Bologna, Italy
Juliane Müller
Department of Geosciences, University Bremen, 28334, Bremen, Germany
MARUM Centre for Marine Environmental Sciences, University Bremen, 28334, Bremen, Germany
Marine Geology Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Gesine Mollenhauer
CORRESPONDING AUTHOR
Marine Geochemistry Section, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, 27570, Bremerhaven, Germany
Department of Geosciences, University Bremen, 28334, Bremen, Germany
MARUM Centre for Marine Environmental Sciences, University Bremen, 28334, Bremen, Germany
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Clim. Past, 19, 159–178, https://doi.org/10.5194/cp-19-159-2023, https://doi.org/10.5194/cp-19-159-2023, 2023
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Stefan Mulitza, Torsten Bickert, Helen C. Bostock, Cristiano M. Chiessi, Barbara Donner, Aline Govin, Naomi Harada, Enqing Huang, Heather Johnstone, Henning Kuhnert, Michael Langner, Frank Lamy, Lester Lembke-Jene, Lorraine Lisiecki, Jean Lynch-Stieglitz, Lars Max, Mahyar Mohtadi, Gesine Mollenhauer, Juan Muglia, Dirk Nürnberg, André Paul, Carsten Rühlemann, Janne Repschläger, Rajeev Saraswat, Andreas Schmittner, Elisabeth L. Sikes, Robert F. Spielhagen, and Ralf Tiedemann
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Charlotte Haugk, Loeka L. Jongejans, Kai Mangelsdorf, Matthias Fuchs, Olga Ogneva, Juri Palmtag, Gesine Mollenhauer, Paul J. Mann, P. Paul Overduin, Guido Grosse, Tina Sanders, Robyn E. Tuerena, Lutz Schirrmeister, Sebastian Wetterich, Alexander Kizyakov, Cornelia Karger, and Jens Strauss
Biogeosciences, 19, 2079–2094, https://doi.org/10.5194/bg-19-2079-2022, https://doi.org/10.5194/bg-19-2079-2022, 2022
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Gerard J. M. Versteegh, Karin A. F. Zonneveld, Jens Hefter, Oscar E. Romero, Gerhard Fischer, and Gesine Mollenhauer
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A 5-year record of long-chain mid-chain diol export flux and composition is presented with a 1- to 3-week resolution sediment trap CBeu (in the NW African upwelling). All environmental parameters as well as the diol composition are dominated by the seasonal cycle, albeit with different phase relations for temperature and upwelling. Most diol-based proxies are dominated by upwelling. The long-chain diol index reflects temperatures of the oligotrophic summer sea surface.
Nele Lamping, Juliane Müller, Jens Hefter, Gesine Mollenhauer, Christian Haas, Xiaoxu Shi, Maria-Elena Vorrath, Gerrit Lohmann, and Claus-Dieter Hillenbrand
Clim. Past, 17, 2305–2326, https://doi.org/10.5194/cp-17-2305-2021, https://doi.org/10.5194/cp-17-2305-2021, 2021
Short summary
Short summary
We analysed biomarker concentrations on surface sediment samples from the Antarctic continental margin. Highly branched isoprenoids and GDGTs are used for reconstructing recent sea-ice distribution patterns and ocean temperatures respectively. We compared our biomarker-based results with data obtained from satellite observations and estimated from a numerical model and find reasonable agreements. Further, we address caveats and provide recommendations for future investigations.
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Short summary
In order to understand the mechanisms governing permafrost organic matter remobilization, we investigated organic matter composition during past intervals of rapid sea-level rise, of inland warming, and of dense sea-ice cover in the Laptev Sea. We find that sea-level rise resulted in widespread erosion and transport of permafrost materials to the ocean but that erosion is mitigated by regional dense sea-ice cover. Factors like inland warming or floods increase permafrost mobilization locally.
In order to understand the mechanisms governing permafrost organic matter remobilization, we...
