Articles | Volume 20, issue 1
https://doi.org/10.5194/bg-20-229-2023
© Author(s) 2023. 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-20-229-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Jan 2023
Research article |
| 16 Jan 2023
| 16 Jan 2023
Biomarker characterization of the North Water Polynya, Baffin Bay: implications for local sea ice and temperature proxies
David J. Harning
CORRESPONDING AUTHOR
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, USA
Brooke Holman
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, USA
Lineke Woelders
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, USA
Anne E. Jennings
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, USA
Julio Sepúlveda
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, USA
Department of Geological Sciences, University of Colorado, Boulder,
USA
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Short summary
In order to better reconstruct the geologic history of the North Water Polynya, we provide modern validations and calibrations of lipid biomarker proxies in Baffin Bay. We find that sterols, rather than HBIs, most accurately capture the current extent of the North Water Polynya and will be a valuable tool to reconstruct its past presence or absence. Our local temperature calibrations for GDGTs and OH-GDGTs reduce the uncertainty present in global temperature calibrations.
In order to better reconstruct the geologic history of the North Water Polynya, we provide...
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