Articles | Volume 21, issue 2
https://doi.org/10.5194/bg-21-671-2024
© Author(s) 2024. 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-21-671-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
02 Feb 2024
Research article |
| 02 Feb 2024
| 02 Feb 2024
Central Arctic Ocean surface–atmosphere exchange of CO2 and CH4 constrained by direct measurements
Department of Meteorology, Stockholm University, Stockholm, 10691, Sweden
Department of Earth Sciences, Uppsala University, Uppsala, 75236, Sweden
Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Sonja Murto
Department of Meteorology, Stockholm University, Stockholm, 10691, Sweden
Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Ian Brown
Plymouth Marine Laboratory, Plymouth, PL1 3DH, United Kingdom
Adam Ulfsbo
Department of Marine Sciences, University of Gothenburg, Gothenburg, 40530, Sweden
Brett F. Thornton
Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Department of Geological Sciences, Stockholm University, Stockholm, 10691, Sweden
Volker Brüchert
Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Department of Geological Sciences, Stockholm University, Stockholm, 10691, Sweden
Michael Tjernström
Department of Meteorology, Stockholm University, Stockholm, 10691, Sweden
Bolin Centre for Climate Research, Stockholm, 10691, Sweden
Anna Lunde Hermansson
Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, 41296, Sweden
Amanda T. Nylund
Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, 41296, Sweden
Lina A. Holthusen
Chemical Oceanography Department, GEOMAR Helmholtz Centre for Ocean Research Kiel, 24105 Kiel, Germany
now at: Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, 26129 Oldenburg, Germany
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Amanda T. Nylund, Lars Arneborg, Anders Tengberg, Ulf Mallast, and Ida-Maja Hassellöv
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Erik Johansson, Abhay Devasthale, Michael Tjernström, Annica M. L. Ekman, Klaus Wyser, and Tristan L'Ecuyer
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Jutta Vüllers, Peggy Achtert, Ian M. Brooks, Michael Tjernström, John Prytherch, Annika Burzik, and Ryan Neely III
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Peggy Achtert, Ewan J. O'Connor, Ian M. Brooks, Georgia Sotiropoulou, Matthew D. Shupe, Bernhard Pospichal, Barbara J. Brooks, and Michael Tjernström
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We present observations of precipitating and non-precipitating Arctic liquid and mixed-phase clouds during a research cruise along the Russian shelf in summer and autumn of 2014. Active remote-sensing observations, radiosondes, and auxiliary measurements are combined in the synergistic Cloudnet retrieval. Cloud properties are analysed with respect to cloud-top temperature and boundary layer structure. About 8 % of all liquid clouds show a liquid water path below the infrared black body limit.
Samuel T. Wilson, Alia N. Al-Haj, Annie Bourbonnais, Claudia Frey, Robinson W. Fulweiler, John D. Kessler, Hannah K. Marchant, Jana Milucka, Nicholas E. Ray, Parvadha Suntharalingam, Brett F. Thornton, Robert C. Upstill-Goddard, Thomas S. Weber, Damian L. Arévalo-Martínez, Hermann W. Bange, Heather M. Benway, Daniele Bianchi, Alberto V. Borges, Bonnie X. Chang, Patrick M. Crill, Daniela A. del Valle, Laura Farías, Samantha B. Joye, Annette Kock, Jabrane Labidi, Cara C. Manning, John W. Pohlman, Gregor Rehder, Katy J. Sparrow, Philippe D. Tortell, Tina Treude, David L. Valentine, Bess B. Ward, Simon Yang, and Leonid N. Yurganov
Biogeosciences, 17, 5809–5828, https://doi.org/10.5194/bg-17-5809-2020, https://doi.org/10.5194/bg-17-5809-2020, 2020
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The oceans are a net source of the major greenhouse gases; however there has been little coordination of oceanic methane and nitrous oxide measurements. The scientific community has recently embarked on a series of capacity-building exercises to improve the interoperability of dissolved methane and nitrous oxide measurements. This paper derives from a workshop which discussed the challenges and opportunities for oceanic methane and nitrous oxide research in the near future.
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Short summary
We directly measured methane and carbon dioxide exchange between ocean or sea ice and the atmosphere during an icebreaker-based expedition to the central Arctic Ocean (CAO) in summer 2021. These measurements can help constrain climate models and carbon budgets. The methane measurements, the first such made in the CAO, are lower than previous estimates and imply that the CAO is an insignificant contributor to Arctic methane emission. Gas exchange rates are slower than previous estimates.
We directly measured methane and carbon dioxide exchange between ocean or sea ice and the...
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