Articles | Volume 14, issue 10
https://doi.org/10.5194/essd-14-4607-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-14-4607-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The Green Edge cruise: investigating the marginal ice zone processes during late spring and early summer to understand the fate of the Arctic phytoplankton bloom
Flavienne Bruyant
CORRESPONDING AUTHOR
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Rémi Amiraux
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Marie-Pier Amyot
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Philippe Archambault
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Lise Artigue
LEGOS, University of Toulouse, CNRS, CNES, IRD, UPS, 31400 Toulouse,
France
Lucas Barbedo de Freitas
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Département de Biologie, Chimie et Géographie (groupes
BORÉAS et Québec-Océan), Université du Québec à
Rimouski, 300 allée des Ursulines, Rimouski G5L 3A1, QC, Canada
Guislain Bécu
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Simon Bélanger
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Département de Biologie, Chimie et Géographie (groupes
BORÉAS et Québec-Océan), Université du Québec à
Rimouski, 300 allée des Ursulines, Rimouski G5L 3A1, QC, Canada
Pascaline Bourgain
Société AVUNGA, Lars en Vercors, France
Annick Bricaud
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Etienne Brouard
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Camille Brunet
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Tonya Burgers
Centre for Earth Observation Science, University of Manitoba,
Winnipeg MB, Canada
Danielle Caleb
Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney BC,
Canada
Katrine Chalut
Québec-Océan, Département de biologie, chimie et
géographie, Université du Québec à Rimouski QC, Canada
Hervé Claustre
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Véronique Cornet-Barthaux
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Pierre Coupel
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Marine Cusa
Akvaplan-niva, Fram Centre for Climate and the Environment,
Tromsø, Norway
Fanny Cusset
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Laeticia Dadaglio
Laboratoire d'Océanographie Microbienne (LOMIC), UMR7621, CNRS/Sorbonne Université, Observatoire Océanologique de Banyuls-sur-mer,
France
Marty Davelaar
Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney BC,
Canada
Gabrièle Deslongchamps
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Céline Dimier
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Julie Dinasquet
Laboratoire d'Océanographie Microbienne (LOMIC), UMR7621, CNRS/Sorbonne Université, Observatoire Océanologique de Banyuls-sur-mer,
France
Dany Dumont
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
LEGOS, University of Toulouse, CNRS, CNES, IRD, UPS, 31400 Toulouse,
France
Brent Else
Department of Geography, University of Calgary, Calgary T2N 1N4, AB,
Canada
Igor Eulaers
Department of Biosciences – Arctic Environment, Aarhus University,
Denmark
Joannie Ferland
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Gabrielle Filteau
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Marie-Hélène Forget
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Jérome Fort
Littoral Environnement et Sociétés, UMR7266,
CNRS/Université de La Rochelle, France
Louis Fortier
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
deceased
Martí Galí
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Barcelona Supercomputing Center (BSC), Barcelona, Spain
Morgane Gallinari
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Svend-Erik Garbus
Department of Biosciences – Arctic Environment, Aarhus University,
Denmark
Nicole Garcia
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Catherine Gérikas Ribeiro
ECOMAP, UMR7144, CNRS/Sorbonne Université, Station Biologique de
Roscoff, France
GEMA Center for Genomics, Ecology & Environment, Faculty of
Sciences, Universidad Mayor, Santiago, Chile
Colline Gombault
Amundsen Science, Université Laval, Québec QC, Canada
Priscilla Gourvil
Roscoff Culture Collection, FR2424 CNRS/Université Sorbonne,
Station Biologique, Roscoff, France
Clémence Goyens
Operational Directorate Natural Environment, Royal Belgian Institute
of Natural Sciences (RBINS), 29 Rue Vautierstraat, 1000 Brussels, Belgium
Cindy Grant
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Pierre-Luc Grondin
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Pascal Guillot
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Amundsen Science, Université Laval, Québec QC, Canada
Sandrine Hillion
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Rachel Hussherr
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Fabien Joux
Laboratoire d'Océanographie Microbienne (LOMIC), UMR7621, CNRS/Sorbonne Université, Observatoire Océanologique de Banyuls-sur-mer,
France
Hannah Joy-Warren
Department of Earth System Science, Stanford University, Stanford,
CA 94305, USA
Gabriel Joyal
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
David Kieber
Department of Chemistry, College of environmental sciences and
forestry, State University of New York, Syracuse, NY 13210, USA
Augustin Lafond
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
José Lagunas
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Patrick Lajeunesse
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Catherine Lalande
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Jade Larivière
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Florence Le Gall
ECOMAP, UMR7144, CNRS/Sorbonne Université, Station Biologique de
Roscoff, France
Karine Leblanc
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Mathieu Leblanc
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Justine Legras
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Keith Lévesque
Amundsen Science, Université Laval, Québec QC, Canada
Kate-M. Lewis
Department of Earth System Science, Stanford University, Stanford,
CA 94305, USA
Edouard Leymarie
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Aude Leynaert
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Thomas Linkowski
Amundsen Science, Université Laval, Québec QC, Canada
Martine Lizotte
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Adriana Lopes dos Santos
Asian School of the Environment, Nanyang Technological University,
50 Nanyang Avenue, Singapore 639798, Singapore
Claudie Marec
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Institut Universitaire Européen de la Mer, UMS3113, CNRS/Univ.
Brest, Plouzane, France
Dominique Marie
ECOMAP, UMR7144, CNRS/Sorbonne Université, Station Biologique de
Roscoff, France
Guillaume Massé
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Philippe Massicotte
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Atsushi Matsuoka
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
School of Marine Science and Ocean Engineering (SMSOE), Institute
for the Study of Earth, Oceans, and Space (EOS) University of New Hampshire,
Durham, USA
Lisa A. Miller
Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney BC,
Canada
Sharif Mirshak
Société Parafilm, Montréal QC, Canada
Nathalie Morata
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Akvaplan-niva, Fram Centre for Climate and the Environment,
Tromsø, Norway
Brivaela Moriceau
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Philippe-Israël Morin
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Simon Morisset
Amundsen Science, Université Laval, Québec QC, Canada
Anders Mosbech
Department of Biosciences – Arctic Environment, Aarhus University,
Denmark
Alfonso Mucci
GEOTOP and Department of Earth and Planetary Sciences, McGill
University, Montréal QC, Canada
Gabrielle Nadaï
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Christian Nozais
Québec-Océan, Département de biologie, chimie et
géographie, Université du Québec à Rimouski QC, Canada
Ingrid Obernosterer
Laboratoire d'Océanographie Microbienne (LOMIC), UMR7621, CNRS/Sorbonne Université, Observatoire Océanologique de Banyuls-sur-mer,
France
Thimoté Paire
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Christos Panagiotopoulos
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Marie Parenteau
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Noémie Pelletier
Québec-Océan, Département de biologie, chimie et
géographie, Université du Québec à Rimouski QC, Canada
Marc Picheral
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Bernard Quéguiner
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Patrick Raimbault
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Joséphine Ras
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Eric Rehm
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Llúcia Ribot Lacosta
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Balearic Islands Coastal Observing and Forecasting System, SOCIB,
07122, Edificio Naorte, Bloque A, Parc Bit, Palma de Mallorca, Spain
Jean-François Rontani
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Blanche Saint-Béat
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Dyneco Pelagos, IFREMER, BP70, 29280 Plouzané, France
Julie Sansoulet
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Noé Sardet
Société Parafilm, Montréal QC, Canada
Catherine Schmechtig
OSU Ecce-Terra, UMS3455, CNRS/Sorbonne Université, PARIS Cedex
5, France
Antoine Sciandra
Laboratoire d'Océanographie de Villefranche, UMR7093,
CNRS/Sorbonne Université, Villefranche-sur-Mer, France
Richard Sempéré
Mediterranean Institute of Oceanography (MIO), Aix-Marseille
Université, Université de Toulon, CNRS, IRD, MIO, Marseille, France
Caroline Sévigny
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Institut des sciences de la mer de Rimouski, Université du
Québec à Rimouski, QC, Canada
Jordan Toullec
LEMAR, Univ Brest, CNRS, IRD, Ifremer, 29280 Plouzane, France
Margot Tragin
ECOMAP, UMR7144, CNRS/Sorbonne Université, Station Biologique de
Roscoff, France
Jean-Éric Tremblay
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Annie-Pier Trottier
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Daniel Vaulot
ECOMAP, UMR7144, CNRS/Sorbonne Université, Station Biologique de
Roscoff, France
Anda Vladoiu
LOCEAN-IPSL, UMR7159, CNRS/IRD/MNHN/Sorbonne Université, 75005
Paris, France
Applied Physics Laboratory, University of Washington, Seattle, WA
98105, USA
Lei Xue
Department of Chemistry, College of environmental sciences and
forestry, State University of New York, Syracuse, NY 13210, USA
Gustavo Yunda-Guarin
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
Québec-Océan, Université Laval, Québec G1V 0A6, QC,
Canada
Marcel Babin
Takuvik international research laboratory (IRL3376), Université
Laval (Canada) & CNRS (France), Département de Biologie et
Québec-Océan, Université Laval, Pavillon A. Vachon 1045, avenue
de la médecine, Local 2078, Québec QC, G1V 0A6, Canada
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Earth Syst. Sci. Data, 15, 1617–1653, https://doi.org/10.5194/essd-15-1617-2023, https://doi.org/10.5194/essd-15-1617-2023, 2023
Short summary
Short summary
Permafrost thaw in the Mackenzie Delta region results in the release of organic matter into the coastal marine environment. What happens to this carbon-rich organic matter as it transits along the fresh to salty aquatic environments is still underdocumented. Four expeditions were conducted from April to September 2019 in the coastal area of the Beaufort Sea to study the fate of organic matter. This paper describes a rich set of data characterizing the composition and sources of organic matter.
Philippe Massicotte, Rainer M. W. Amon, David Antoine, Philippe Archambault, Sergio Balzano, Simon Bélanger, Ronald Benner, Dominique Boeuf, Annick Bricaud, Flavienne Bruyant, Gwenaëlle Chaillou, Malik Chami, Bruno Charrière, Jing Chen, Hervé Claustre, Pierre Coupel, Nicole Delsaut, David Doxaran, Jens Ehn, Cédric Fichot, Marie-Hélène Forget, Pingqing Fu, Jonathan Gagnon, Nicole Garcia, Beat Gasser, Jean-François Ghiglione, Gaby Gorsky, Michel Gosselin, Priscillia Gourvil, Yves Gratton, Pascal Guillot, Hermann J. Heipieper, Serge Heussner, Stanford B. Hooker, Yannick Huot, Christian Jeanthon, Wade Jeffrey, Fabien Joux, Kimitaka Kawamura, Bruno Lansard, Edouard Leymarie, Heike Link, Connie Lovejoy, Claudie Marec, Dominique Marie, Johannie Martin, Jacobo Martín, Guillaume Massé, Atsushi Matsuoka, Vanessa McKague, Alexandre Mignot, William L. Miller, Juan-Carlos Miquel, Alfonso Mucci, Kaori Ono, Eva Ortega-Retuerta, Christos Panagiotopoulos, Tim Papakyriakou, Marc Picheral, Louis Prieur, Patrick Raimbault, Joséphine Ras, Rick A. Reynolds, André Rochon, Jean-François Rontani, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Yuan Shen, Guisheng Song, Dariusz Stramski, Eri Tachibana, Alexandre Thirouard, Imma Tolosa, Jean-Éric Tremblay, Mickael Vaïtilingom, Daniel Vaulot, Frédéric Vaultier, John K. Volkman, Huixiang Xie, Guangming Zheng, and Marcel Babin
Earth Syst. Sci. Data, 13, 1561–1592, https://doi.org/10.5194/essd-13-1561-2021, https://doi.org/10.5194/essd-13-1561-2021, 2021
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The MALINA oceanographic expedition was conducted in the Mackenzie River and the Beaufort Sea systems. The sampling was performed across seven shelf–basin transects to capture the meridional gradient between the estuary and the open ocean. The main goal of this research program was to better understand how processes such as primary production are influencing the fate of organic matter originating from the surrounding terrestrial landscape during its transition toward the Arctic Ocean.
Ariadna Celina Nocera, Lars Stemmann, Marcel Babin, Tristan Biard, Julie Coustenoble, François Carlotti, Laurent Coppola, Lucas Courchet, Laetitia Drago, Amanda Elineau, Lionel Guidi, Helena Hauss, Laëtitia Jalabert, Lee Karp-Boss, Rainer Kiko, Manon Laget, Fabien Lombard, Andrew McDonnell, Camille Merland, Solène Motreuil, Thelma Panaïotis, Marc Picheral, Andreas Rogge, Anya Waite, and Jean-Olivier Irisson
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-522, https://doi.org/10.5194/essd-2025-522, 2025
Preprint under review for ESSD
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Plankton and detritus play a key role in ocean health and climate regulation. We present a large global dataset of images and information collected from 2008 to 2018 using specialized underwater camera (UVP). This publicly available dataset will support more accurate ecological models and help train artificial intelligence tools, improving how scientists track ocean biodiversity and monitor environmental changes.
Sebastien Kuchly, Baptiste Auvity, Nicolas Mokus, Matilde Bureau, Paul Nicot, Amaury Fourgeaud, Véronique Dansereau, Antonin Eddi, Stéphane Perrard, Dany Dumont, and Ludovic Moreau
EGUsphere, https://doi.org/10.5194/egusphere-2025-3304, https://doi.org/10.5194/egusphere-2025-3304, 2025
This preprint is open for discussion and under review for The Cryosphere (TC).
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During February and March 2024, we realized a multi-instrument field campaign in the St. Lawrence Estuary, to capture swell-driven sea ice fragmentation. The dataset combines geophones, wave buoys, smartphones, and video recordings with drones, to study wave-ice interactions under natural conditions. It enables analysis of ice thickness, wave properties, and ice motion. Preliminary results show strong consistency across instruments, offering a valuable resource to improve sea ice models.
Jeremy Baudry, Dany Dumont, David Didier, Pascal Bernatchez, and Sebastien Dugas
EGUsphere, https://doi.org/10.5194/egusphere-2025-2168, https://doi.org/10.5194/egusphere-2025-2168, 2025
This preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
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This two-part study explores the development of a short-term (up to 48 hours) coastal flood forecasting system along the Quebec coastline. The first part of the study focuses on wave prediction, a main contributor to coastal hazards. The key results of the study show that wave conditions can be accurately predicted during summer, however, the performances of the model in winter are considerably reduced, primarily because predicting sea ice conditions at fine spatial scales remains challenging.
M. Andrea Orihuela-García, Yohan Ruprich-Robert, Vladimir Lapin, Saskia Loosveldt Tomas, Raffaele Bernardello, Margarida Samsó-Cabré, Pierre-Antoine Bretonnière, Miguel Castrillo, and Marti Gali
EGUsphere, https://doi.org/10.22541/essoar.174481514.42345660/v1, https://doi.org/10.22541/essoar.174481514.42345660/v1, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
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Tiny oceanic algae absorb carbon using sunlight. When they die, some sink as "detritus" that oceanic creatures eat or bacteria decompose. This "biological carbon pump" stores carbon in the deep ocean. Our study found that in warm southern waters, particles decompose quickly but more survive deeper trips. In cold northern waters, creatures eat more particles. Winter water mixing moves carbon down before spring algae bloom. Understanding these processes helps predict future ocean carbon storage.
William A. Nesbitt, Samuel W. Stevens, Alfonso O. Mucci, Lennart Gerke, Toste Tanhua, Gwénaëlle Chaillou, and Douglas W. R. Wallace
EGUsphere, https://doi.org/10.5194/egusphere-2025-2400, https://doi.org/10.5194/egusphere-2025-2400, 2025
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We use 20 years of oxygen measurements and recent carbon data with a tracer-calibrated 1D model to quantify oxygen loss and inorganic carbon accumulation in the deep waters of the Gulf and St. Lawrence Estuary. We further utilize the model to give a first estimate of the impact of adding pure oxygen, a by-product from green hydrogen production to these deep waters. Results show this could restore oxygen to year-2000 levels, but full recovery would require a larger input.
Brian J. Butterworth, Brent G. T. Else, Kristina A. Brown, Christopher J. Mundy, William J. Williams, Lina M. Rotermund, and Gijs de Boer
EGUsphere, https://doi.org/10.5194/egusphere-2025-1802, https://doi.org/10.5194/egusphere-2025-1802, 2025
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Observations of carbon dioxide transfer between water and air were measured at a seasonally ice-covered marine location using the eddy covariance method. The goal was to determine how sea ice influences water-air transfer of carbon dioxide by season. During full ice cover in winter, ice acted as a barrier to transfer. In spring, melt water absorbed carbon dioxide from the air. In fall, freezing released carbon dioxide from water to the air.
Clement Bertin, Vincent Le Fouest, Dustin Carroll, Stephanie Dutkiewicz, Dimitris Menemenlis, Atsushi Matsuoka, Manfredi Manizza, and Charles E. Miller
EGUsphere, https://doi.org/10.5194/egusphere-2025-973, https://doi.org/10.5194/egusphere-2025-973, 2025
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We adjusted a model of the Mackenzie River region to account for the riverine export of organic matter that affects light in the water. We show that such export causes a delay in the phytoplankton growth by two weeks and raises the water surface temperature by 1.7 °C. We found that temperature increase turns this coastal region from a sink of carbon dioxide to an emitter. Our findings suggest that rising exports of organic matter can significantly affect the carbon cycle in Arctic coastal areas.
Raphaël Larouche, Bastian Raulier, Christian Katlein, Simon Lambert-Girard, Simon Thibault, and Marcel Babin
EGUsphere, https://doi.org/10.31223/X5V955, https://doi.org/10.31223/X5V955, 2025
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We developed a new method to study how light interacts with sea ice using a compact 360-degree camera. By lowering this camera into drilled holes in ice, we captured detailed light patterns inside different ice layers. Our research revealed how light is absorbed and scattered in both Arctic multi-year ice and thinner, seasonal ice in Quebec. These findings improve our understanding of sea ice structure and its role in the climate system, helping representation sea ice in models.
François Lapointe, Antoine Gagnon-Poiré, Pierre Francus, Patrick Lajeunesse, and Clarence Gagnon
EGUsphere, https://doi.org/10.5194/egusphere-2025-97, https://doi.org/10.5194/egusphere-2025-97, 2025
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A new 1500-year-long sediment record entirely made of annual laminations (varves) from a deep lake in Labrador was analyzed to perform a reconstruction of past hydroclimatic conditions. The varve thickness was linked to regional snow and rain precipitations. Our record indicates more precipitations during the 1050–1225 CE period, that is corresponding to the Medieval Climate Anomaly, whereas the 15th–19th centuries, related to the Little Ice Age, shows a drier climate.
Sankirna D. Joge, Anoop S. Mahajan, Shrivardhan Hulswar, Christa A. Marandino, Martí Galí, Thomas G. Bell, and Rafel Simó
Biogeosciences, 21, 4439–4452, https://doi.org/10.5194/bg-21-4439-2024, https://doi.org/10.5194/bg-21-4439-2024, 2024
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Dimethyl sulfide (DMS) is the largest natural source of sulfur in the atmosphere and leads to the formation of cloud condensation nuclei. DMS emission and quantification of its impacts have large uncertainties, but a detailed study on the emissions and drivers of their uncertainty is missing to date. The emissions are usually calculated from the seawater DMS concentrations and a flux parameterization. Here we quantify the differences in DMS seawater products, which can affect DMS fluxes.
Sankirna D. Joge, Anoop S. Mahajan, Shrivardhan Hulswar, Christa A. Marandino, Martí Galí, Thomas G. Bell, Mingxi Yang, and Rafel Simó
Biogeosciences, 21, 4453–4467, https://doi.org/10.5194/bg-21-4453-2024, https://doi.org/10.5194/bg-21-4453-2024, 2024
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Dimethyl sulfide (DMS) is the largest natural source of sulfur in the atmosphere and leads to the formation of cloud condensation nuclei. DMS emissions and quantification of their impacts have large uncertainties, but a detailed study on the range of emissions and drivers of their uncertainty is missing to date. The emissions are calculated from the seawater DMS concentrations and a flux parameterization. Here we quantify the differences in the effect of flux parameterizations used in models.
Mathilde Dugenne, Marco Corrales-Ugalde, Jessica Y. Luo, Rainer Kiko, Todd D. O'Brien, Jean-Olivier Irisson, Fabien Lombard, Lars Stemmann, Charles Stock, Clarissa R. Anderson, Marcel Babin, Nagib Bhairy, Sophie Bonnet, Francois Carlotti, Astrid Cornils, E. Taylor Crockford, Patrick Daniel, Corinne Desnos, Laetitia Drago, Amanda Elineau, Alexis Fischer, Nina Grandrémy, Pierre-Luc Grondin, Lionel Guidi, Cecile Guieu, Helena Hauss, Kendra Hayashi, Jenny A. Huggett, Laetitia Jalabert, Lee Karp-Boss, Kasia M. Kenitz, Raphael M. Kudela, Magali Lescot, Claudie Marec, Andrew McDonnell, Zoe Mériguet, Barbara Niehoff, Margaux Noyon, Thelma Panaïotis, Emily Peacock, Marc Picheral, Emilie Riquier, Collin Roesler, Jean-Baptiste Romagnan, Heidi M. Sosik, Gretchen Spencer, Jan Taucher, Chloé Tilliette, and Marion Vilain
Earth Syst. Sci. Data, 16, 2971–2999, https://doi.org/10.5194/essd-16-2971-2024, https://doi.org/10.5194/essd-16-2971-2024, 2024
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Plankton and particles influence carbon cycling and energy flow in marine ecosystems. We used three types of novel plankton imaging systems to obtain size measurements from a range of plankton and particle sizes and across all major oceans. Data were compiled and cross-calibrated from many thousands of images, showing seasonal and spatial changes in particle size structure in different ocean basins. These datasets form the first release of the Pelagic Size Structure database (PSSdb).
Tanguy Soulié, Francesca Vidussi, Justine Courboulès, Marie Heydon, Sébastien Mas, Florian Voron, Carolina Cantoni, Fabien Joux, and Behzad Mostajir
Biogeosciences, 21, 1887–1902, https://doi.org/10.5194/bg-21-1887-2024, https://doi.org/10.5194/bg-21-1887-2024, 2024
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Due to climate change, it is projected that extreme rainfall events, which bring terrestrial matter into coastal seas, will occur more frequently in the Mediterranean region. To test the effects of runoffs of terrestrial matter on plankton communities from Mediterranean coastal waters, an in situ mesocosm experiment was conducted. The simulated runoff affected key processes mediated by plankton, such as primary production and respiration, suggesting major consequences of such events.
Eleanor Simpson, Debby Ianson, Karen E. Kohfeld, Ana C. Franco, Paul A. Covert, Marty Davelaar, and Yves Perreault
Biogeosciences, 21, 1323–1353, https://doi.org/10.5194/bg-21-1323-2024, https://doi.org/10.5194/bg-21-1323-2024, 2024
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Shellfish aquaculture operates in nearshore areas where data on ocean acidification parameters are limited. We show daily and seasonal variability in pH and saturation states of calcium carbonate at nearshore aquaculture sites in British Columbia, Canada, and determine the contributing drivers of this variability. We find that nearshore locations have greater variability than open waters and that the uptake of carbon by phytoplankton is the major driver of pH and saturation state variability.
Tahiana Ratsimbazafy, Thibaud Dezutter, Amélie Desmarais, Daniel Amirault, Pascal Guillot, and Simon Morisset
Earth Syst. Sci. Data, 16, 471–499, https://doi.org/10.5194/essd-16-471-2024, https://doi.org/10.5194/essd-16-471-2024, 2024
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The Canadian Coast Guard Ship has collected oceanographic data across the Canadian Arctic annually since 2003. Such activity aims to support Canadian and international researchers. The ship has several instruments with cutting-edge technology available for research each year during the summer. The data presented here include measurements of physical, chemical and biological variables during the year 2021. Datasets collected from each expedition are available free of charge for the public.
Zhibo Shao, Yangchun Xu, Hua Wang, Weicheng Luo, Lice Wang, Yuhong Huang, Nona Sheila R. Agawin, Ayaz Ahmed, Mar Benavides, Mikkel Bentzon-Tilia, Ilana Berman-Frank, Hugo Berthelot, Isabelle C. Biegala, Mariana B. Bif, Antonio Bode, Sophie Bonnet, Deborah A. Bronk, Mark V. Brown, Lisa Campbell, Douglas G. Capone, Edward J. Carpenter, Nicolas Cassar, Bonnie X. Chang, Dreux Chappell, Yuh-ling Lee Chen, Matthew J. Church, Francisco M. Cornejo-Castillo, Amália Maria Sacilotto Detoni, Scott C. Doney, Cecile Dupouy, Marta Estrada, Camila Fernandez, Bieito Fernández-Castro, Debany Fonseca-Batista, Rachel A. Foster, Ken Furuya, Nicole Garcia, Kanji Goto, Jesús Gago, Mary R. Gradoville, M. Robert Hamersley, Britt A. Henke, Cora Hörstmann, Amal Jayakumar, Zhibing Jiang, Shuh-Ji Kao, David M. Karl, Leila R. Kittu, Angela N. Knapp, Sanjeev Kumar, Julie LaRoche, Hongbin Liu, Jiaxing Liu, Caroline Lory, Carolin R. Löscher, Emilio Marañón, Lauren F. Messer, Matthew M. Mills, Wiebke Mohr, Pia H. Moisander, Claire Mahaffey, Robert Moore, Beatriz Mouriño-Carballido, Margaret R. Mulholland, Shin-ichiro Nakaoka, Joseph A. Needoba, Eric J. Raes, Eyal Rahav, Teodoro Ramírez-Cárdenas, Christian Furbo Reeder, Lasse Riemann, Virginie Riou, Julie C. Robidart, Vedula V. S. S. Sarma, Takuya Sato, Himanshu Saxena, Corday Selden, Justin R. Seymour, Dalin Shi, Takuhei Shiozaki, Arvind Singh, Rachel E. Sipler, Jun Sun, Koji Suzuki, Kazutaka Takahashi, Yehui Tan, Weiyi Tang, Jean-Éric Tremblay, Kendra Turk-Kubo, Zuozhu Wen, Angelicque E. White, Samuel T. Wilson, Takashi Yoshida, Jonathan P. Zehr, Run Zhang, Yao Zhang, and Ya-Wei Luo
Earth Syst. Sci. Data, 15, 3673–3709, https://doi.org/10.5194/essd-15-3673-2023, https://doi.org/10.5194/essd-15-3673-2023, 2023
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N2 fixation by marine diazotrophs is an important bioavailable N source to the global ocean. This updated global oceanic diazotroph database increases the number of in situ measurements of N2 fixation rates, diazotrophic cell abundances, and nifH gene copy abundances by 184 %, 86 %, and 809 %, respectively. Using the updated database, the global marine N2 fixation rate is estimated at 223 ± 30 Tg N yr−1, which triplicates that using the original database.
Philippe Massicotte, Marcel Babin, Frank Fell, Vincent Fournier-Sicre, and David Doxaran
Earth Syst. Sci. Data, 15, 3529–3545, https://doi.org/10.5194/essd-15-3529-2023, https://doi.org/10.5194/essd-15-3529-2023, 2023
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The COASTlOOC oceanographic expeditions in 1997 and 1998 studied the relationship between seawater properties and biology and chemistry across the European coasts. The team collected data from 379 stations using ships and helicopters to support the development of ocean color remote-sensing algorithms. This unique and consistent dataset is still used today by researchers.
Valentin Siebert, Brivaëla Moriceau, Lukas Fröhlich, Bernd R. Schöne, Erwan Amice, Beatriz Beker, Kevin Bihannic, Isabelle Bihannic, Gaspard Delebecq, Jérémy Devesa, Morgane Gallinari, Yoan Germain, Émilie Grossteffan, Klaus Peter Jochum, Thierry Le Bec, Manon Le Goff, Céline Liorzou, Aude Leynaert, Claudie Marec, Marc Picheral, Peggy Rimmelin-Maury, Marie-Laure Rouget, Matthieu Waeles, and Julien Thébault
Earth Syst. Sci. Data, 15, 3263–3281, https://doi.org/10.5194/essd-15-3263-2023, https://doi.org/10.5194/essd-15-3263-2023, 2023
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This article presents an overview of the results of biological, chemical and physical parameters measured at high temporal resolution (sampling once and twice per week) during environmental monitoring that took place in 2021 in the Bay of Brest. We strongly believe that this dataset could be very useful for other scientists performing sclerochronological investigations, studying biogeochemical cycles or conducting various ecological research projects.
Richard P. Sims, Mohamed M. M. Ahmed, Brian J. Butterworth, Patrick J. Duke, Stephen F. Gonski, Samantha F. Jones, Kristina A. Brown, Christopher J. Mundy, William J. Williams, and Brent G. T. Else
Ocean Sci., 19, 837–856, https://doi.org/10.5194/os-19-837-2023, https://doi.org/10.5194/os-19-837-2023, 2023
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Using a small research vessel based out of Cambridge Bay in the Kitikmeot Sea (Canadian Arctic Archipelago), we were able to make measurements of surface ocean pCO2 shortly after sea ice breakup for 4 consecutive years. We compare our measurements to previous underway measurements and the two ongoing ocean carbon observatories in the region. We identify high interannual variability and a potential bias in previous estimates due to lower pCO2 in bays and inlets.
George Manville, Thomas G. Bell, Jane P. Mulcahy, Rafel Simó, Martí Galí, Anoop S. Mahajan, Shrivardhan Hulswar, and Paul R. Halloran
Biogeosciences, 20, 1813–1828, https://doi.org/10.5194/bg-20-1813-2023, https://doi.org/10.5194/bg-20-1813-2023, 2023
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We present the first global investigation of controls on seawater dimethylsulfide (DMS) spatial variability over scales of up to 100 km. Sea surface height anomalies, density, and chlorophyll a help explain almost 80 % of DMS variability. The results suggest that physical and biogeochemical processes play an equally important role in controlling DMS variability. These data provide independent confirmation that existing parameterisations of seawater DMS concentration use appropriate variables.
Martine Lizotte, Bennet Juhls, Atsushi Matsuoka, Philippe Massicotte, Gaëlle Mével, David Obie James Anikina, Sofia Antonova, Guislain Bécu, Marine Béguin, Simon Bélanger, Thomas Bossé-Demers, Lisa Bröder, Flavienne Bruyant, Gwénaëlle Chaillou, Jérôme Comte, Raoul-Marie Couture, Emmanuel Devred, Gabrièle Deslongchamps, Thibaud Dezutter, Miles Dillon, David Doxaran, Aude Flamand, Frank Fell, Joannie Ferland, Marie-Hélène Forget, Michael Fritz, Thomas J. Gordon, Caroline Guilmette, Andrea Hilborn, Rachel Hussherr, Charlotte Irish, Fabien Joux, Lauren Kipp, Audrey Laberge-Carignan, Hugues Lantuit, Edouard Leymarie, Antonio Mannino, Juliette Maury, Paul Overduin, Laurent Oziel, Colin Stedmon, Crystal Thomas, Lucas Tisserand, Jean-Éric Tremblay, Jorien Vonk, Dustin Whalen, and Marcel Babin
Earth Syst. Sci. Data, 15, 1617–1653, https://doi.org/10.5194/essd-15-1617-2023, https://doi.org/10.5194/essd-15-1617-2023, 2023
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Permafrost thaw in the Mackenzie Delta region results in the release of organic matter into the coastal marine environment. What happens to this carbon-rich organic matter as it transits along the fresh to salty aquatic environments is still underdocumented. Four expeditions were conducted from April to September 2019 in the coastal area of the Beaufort Sea to study the fate of organic matter. This paper describes a rich set of data characterizing the composition and sources of organic matter.
Alexandre Mignot, Hervé Claustre, Gianpiero Cossarini, Fabrizio D'Ortenzio, Elodie Gutknecht, Julien Lamouroux, Paolo Lazzari, Coralie Perruche, Stefano Salon, Raphaëlle Sauzède, Vincent Taillandier, and Anna Teruzzi
Biogeosciences, 20, 1405–1422, https://doi.org/10.5194/bg-20-1405-2023, https://doi.org/10.5194/bg-20-1405-2023, 2023
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Numerical models of ocean biogeochemistry are becoming a major tool to detect and predict the impact of climate change on marine resources and monitor ocean health. Here, we demonstrate the use of the global array of BGC-Argo floats for the assessment of biogeochemical models. We first detail the handling of the BGC-Argo data set for model assessment purposes. We then present 23 assessment metrics to quantify the consistency of BGC model simulations with respect to BGC-Argo data.
Mathilde Jutras, Alfonso Mucci, Gwenaëlle Chaillou, William A. Nesbitt, and Douglas W. R. Wallace
Biogeosciences, 20, 839–849, https://doi.org/10.5194/bg-20-839-2023, https://doi.org/10.5194/bg-20-839-2023, 2023
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The deep waters of the lower St Lawrence Estuary and gulf have, in the last decades, experienced a strong decline in their oxygen concentration. Below 65 µmol L-1, the waters are said to be hypoxic, with dire consequences for marine life. We show that the extent of the hypoxic zone shows a seven-fold increase in the last 20 years, reaching 9400 km2 in 2021. After a stable period at ~ 65 µmol L⁻¹ from 1984 to 2019, the oxygen level also suddenly decreased to ~ 35 µmol L-1 in 2020.
Elie Dumas-Lefebvre and Dany Dumont
The Cryosphere, 17, 827–842, https://doi.org/10.5194/tc-17-827-2023, https://doi.org/10.5194/tc-17-827-2023, 2023
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By changing the shape of ice floes, wave-induced sea ice breakup dramatically affects the large-scale dynamics of sea ice. As this process is also the trigger of multiple others, it was deemed relevant to study how breakup itself affects the ice floe size distribution. To do so, a ship sailed close to ice floes, and the breakup that it generated was recorded with a drone. The obtained data shed light on the underlying physics of wave-induced sea ice breakup.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Thomas Jackson, Andrei Chuprin, Malcolm Taberner, Ruth Airs, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Robert J. W. Brewin, Elisabetta Canuti, Francisco P. Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Afonso Ferreira, Scott Freeman, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Ralf Goericke, Richard Gould, Nathalie Guillocheau, Stanford B. Hooker, Chuamin Hu, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Steven Lohrenz, Hubert Loisel, Antonio Mannino, Victor Martinez-Vicente, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Enrique Montes, Frank Muller-Karger, Aimee Neeley, Michael Novak, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Rüdiger Röttgers, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Crystal Thomas, Rob Thomas, Gavin Tilstone, Andreia Tracana, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Bozena Wojtasiewicz, Simon Wright, and Giuseppe Zibordi
Earth Syst. Sci. Data, 14, 5737–5770, https://doi.org/10.5194/essd-14-5737-2022, https://doi.org/10.5194/essd-14-5737-2022, 2022
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A compiled set of in situ data is vital to evaluate the quality of ocean-colour satellite data records. Here we describe the global compilation of bio-optical in situ data (spanning from 1997 to 2021) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
Rainer Kiko, Marc Picheral, David Antoine, Marcel Babin, Léo Berline, Tristan Biard, Emmanuel Boss, Peter Brandt, Francois Carlotti, Svenja Christiansen, Laurent Coppola, Leandro de la Cruz, Emilie Diamond-Riquier, Xavier Durrieu de Madron, Amanda Elineau, Gabriel Gorsky, Lionel Guidi, Helena Hauss, Jean-Olivier Irisson, Lee Karp-Boss, Johannes Karstensen, Dong-gyun Kim, Rachel M. Lekanoff, Fabien Lombard, Rubens M. Lopes, Claudie Marec, Andrew M. P. McDonnell, Daniela Niemeyer, Margaux Noyon, Stephanie H. O'Daly, Mark D. Ohman, Jessica L. Pretty, Andreas Rogge, Sarah Searson, Masashi Shibata, Yuji Tanaka, Toste Tanhua, Jan Taucher, Emilia Trudnowska, Jessica S. Turner, Anya Waite, and Lars Stemmann
Earth Syst. Sci. Data, 14, 4315–4337, https://doi.org/10.5194/essd-14-4315-2022, https://doi.org/10.5194/essd-14-4315-2022, 2022
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The term
marine particlescomprises detrital aggregates; fecal pellets; bacterioplankton, phytoplankton and zooplankton; and even fish. Here, we present a global dataset that contains 8805 vertical particle size distribution profiles obtained with Underwater Vision Profiler 5 (UVP5) camera systems. These data are valuable to the scientific community, as they can be used to constrain important biogeochemical processes in the ocean, such as the flux of carbon to the deep sea.
Brent G. T. Else, Araleigh Cranch, Richard P. Sims, Samantha Jones, Laura A. Dalman, Christopher J. Mundy, Rebecca A. Segal, Randall K. Scharien, and Tania Guha
The Cryosphere, 16, 3685–3701, https://doi.org/10.5194/tc-16-3685-2022, https://doi.org/10.5194/tc-16-3685-2022, 2022
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Sea ice helps control how much carbon dioxide polar oceans absorb. We compared ice cores from two sites to look for differences in carbon chemistry: one site had thin ice due to strong ocean currents and thick snow; the other site had thick ice, thin snow, and weak currents. We did find some differences in small layers near the top and the bottom of the cores, but for most of the ice volume the chemistry was the same. This result will help build better models of the carbon sink in polar oceans.
Gauthier Vérin, Florent Domine, Marcel Babin, Ghislain Picard, and Laurent Arnaud
The Cryosphere, 16, 3431–3449, https://doi.org/10.5194/tc-16-3431-2022, https://doi.org/10.5194/tc-16-3431-2022, 2022
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Snow physical properties on Arctic sea ice are monitored during the melt season. As snow grains grow, and the snowpack thickness is reduced, the surface albedo decreases. The extra absorbed energy accelerates melting. Radiative transfer modeling shows that more radiation is then transmitted to the snow–sea-ice interface. A sharp increase in transmitted radiation takes place when the snowpack thins significantly, and this coincides with the initiation of the phytoplankton bloom in the seawater.
Marcus Falls, Raffaele Bernardello, Miguel Castrillo, Mario Acosta, Joan Llort, and Martí Galí
Geosci. Model Dev., 15, 5713–5737, https://doi.org/10.5194/gmd-15-5713-2022, https://doi.org/10.5194/gmd-15-5713-2022, 2022
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This paper describes and tests a method which uses a genetic algorithm (GA), a type of optimisation algorithm, on an ocean biogeochemical model. The aim is to produce a set of numerical parameters that best reflect the observed data of particulate organic carbon in a specific region of the ocean. We show that the GA can provide optimised model parameters in a robust and efficient manner and can also help detect model limitations, ultimately leading to a reduction in the model uncertainties.
Shrivardhan Hulswar, Rafel Simó, Martí Galí, Thomas G. Bell, Arancha Lana, Swaleha Inamdar, Paul R. Halloran, George Manville, and Anoop Sharad Mahajan
Earth Syst. Sci. Data, 14, 2963–2987, https://doi.org/10.5194/essd-14-2963-2022, https://doi.org/10.5194/essd-14-2963-2022, 2022
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The third climatological estimation of sea surface dimethyl sulfide (DMS) concentrations based on in situ measurements was created (DMS-Rev3). The update includes a much larger input dataset and includes improvements in the data unification, filtering, and smoothing algorithm. The DMS-Rev3 climatology provides more realistic monthly estimates of DMS, and shows significant regional differences compared to past climatologies.
Frédéric Dupont, Dany Dumont, Jean-François Lemieux, Elie Dumas-Lefebvre, and Alain Caya
The Cryosphere, 16, 1963–1977, https://doi.org/10.5194/tc-16-1963-2022, https://doi.org/10.5194/tc-16-1963-2022, 2022
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In some shallow seas, grounded ice ridges contribute to stabilizing and maintaining a landfast ice cover. A scheme has already proposed where the keel thickness varies linearly with the mean thickness. Here, we extend the approach by taking into account the ice thickness and bathymetry distributions. The probabilistic approach shows a reasonably good agreement with observations and previous grounding scheme while potentially offering more physical insights into the formation of landfast ice.
Hugo Lepage, Alexandra Gruat, Fabien Thollet, Jérôme Le Coz, Marina Coquery, Matthieu Masson, Aymeric Dabrin, Olivier Radakovitch, Jérôme Labille, Jean-Paul Ambrosi, Doriane Delanghe, and Patrick Raimbault
Earth Syst. Sci. Data, 14, 2369–2384, https://doi.org/10.5194/essd-14-2369-2022, https://doi.org/10.5194/essd-14-2369-2022, 2022
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The dataset contains concentrations and fluxes of suspended particle matter (SPM) and several particle-bound contaminants along the Rhône River downstream of Lake Geneva. These data allow us to understand the dynamics and origins. They show the impact of flood events which mainly contribute to a decrease in the contaminant concentrations while fluxes are significant. On the contrary, concentrations are higher during low flow periods probably due to the increase of organic matter.
Bjorn Sundby, Pierre Anschutz, Pascal Lecroart, and Alfonso Mucci
Biogeosciences, 19, 1421–1434, https://doi.org/10.5194/bg-19-1421-2022, https://doi.org/10.5194/bg-19-1421-2022, 2022
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A glacial–interglacial methane-fuelled redistribution of reactive phosphorus between the oceanic and sedimentary phosphorus reservoirs can occur in the ocean when falling sea level lowers the pressure on the seafloor, destabilizes methane hydrates, and triggers the dissolution of P-bearing iron oxides. The mass of phosphate potentially mobilizable from the sediment is similar to the size of the current oceanic reservoir. Hence, this process may play a major role in the marine phosphorus cycle.
Julie Dinasquet, Estelle Bigeard, Frédéric Gazeau, Farooq Azam, Cécile Guieu, Emilio Marañón, Céline Ridame, France Van Wambeke, Ingrid Obernosterer, and Anne-Claire Baudoux
Biogeosciences, 19, 1303–1319, https://doi.org/10.5194/bg-19-1303-2022, https://doi.org/10.5194/bg-19-1303-2022, 2022
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Saharan dust deposition of nutrients and trace metals is crucial to microbes in the Mediterranean Sea. Here, we tested the response of microbial and viral communities to simulated dust deposition under present and future conditions of temperature and pH. Overall, the effect of the deposition was dependent on the initial microbial assemblage, and future conditions will intensify microbial responses. We observed effects on trophic interactions, cascading all the way down to viral processes.
Martí Galí, Marcus Falls, Hervé Claustre, Olivier Aumont, and Raffaele Bernardello
Biogeosciences, 19, 1245–1275, https://doi.org/10.5194/bg-19-1245-2022, https://doi.org/10.5194/bg-19-1245-2022, 2022
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Part of the organic matter produced by plankton in the upper ocean is exported to the deep ocean. This process, known as the biological carbon pump, is key for the regulation of atmospheric carbon dioxide and global climate. However, the dynamics of organic particles below the upper ocean layer are not well understood. Here we compared the measurements acquired by autonomous robots in the top 1000 m of the ocean to a numerical model, which can help improve future climate projections.
Marie Barbieux, Julia Uitz, Alexandre Mignot, Collin Roesler, Hervé Claustre, Bernard Gentili, Vincent Taillandier, Fabrizio D'Ortenzio, Hubert Loisel, Antoine Poteau, Edouard Leymarie, Christophe Penkerc'h, Catherine Schmechtig, and Annick Bricaud
Biogeosciences, 19, 1165–1194, https://doi.org/10.5194/bg-19-1165-2022, https://doi.org/10.5194/bg-19-1165-2022, 2022
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This study assesses marine biological production in two Mediterranean systems representative of vast desert-like (oligotrophic) areas encountered in the global ocean. We use a novel approach based on non-intrusive high-frequency in situ measurements by two profiling robots, the BioGeoChemical-Argo (BGC-Argo) floats. Our results indicate substantial yet variable production rates and contribution to the whole water column of the subsurface layer, typically considered steady and non-productive.
Karine Desboeufs, Franck Fu, Matthieu Bressac, Antonio Tovar-Sánchez, Sylvain Triquet, Jean-François Doussin, Chiara Giorio, Patrick Chazette, Julie Disnaquet, Anaïs Feron, Paola Formenti, Franck Maisonneuve, Araceli Rodríguez-Romero, Pascal Zapf, François Dulac, and Cécile Guieu
Atmos. Chem. Phys., 22, 2309–2332, https://doi.org/10.5194/acp-22-2309-2022, https://doi.org/10.5194/acp-22-2309-2022, 2022
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This article reports the first concurrent sampling of wet deposition samples and surface seawater and was performed during the PEACETIME cruise in the remote Mediterranean (May–June 2017). Through the chemical composition of trace metals (TMs) in these samples, it emphasizes the decrease of atmospheric metal pollution in this area during the last few decades and the critical role of wet deposition as source of TMs for Mediterranean surface seawater, especially for intense dust deposition events.
Charel Wohl, Anna E. Jones, William T. Sturges, Philip D. Nightingale, Brent Else, Brian J. Butterworth, and Mingxi Yang
Biogeosciences, 19, 1021–1045, https://doi.org/10.5194/bg-19-1021-2022, https://doi.org/10.5194/bg-19-1021-2022, 2022
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We measured concentrations of five different organic gases in seawater in the high Arctic during summer. We found higher concentrations near the surface of the water column (top 5–10 m) and in areas of partial ice cover. This suggests that sea ice influences the concentrations of these gases. These gases indirectly exert a slight cooling effect on the climate, and it is therefore important to measure the levels accurately for future climate predictions.
Delaney B. Kilgour, Gordon A. Novak, Jon S. Sauer, Alexia N. Moore, Julie Dinasquet, Sarah Amiri, Emily B. Franklin, Kathryn Mayer, Margaux Winter, Clare K. Morris, Tyler Price, Francesca Malfatti, Daniel R. Crocker, Christopher Lee, Christopher D. Cappa, Allen H. Goldstein, Kimberly A. Prather, and Timothy H. Bertram
Atmos. Chem. Phys., 22, 1601–1613, https://doi.org/10.5194/acp-22-1601-2022, https://doi.org/10.5194/acp-22-1601-2022, 2022
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We report measurements of gas-phase volatile organosulfur molecules made during a mesocosm phytoplankton bloom experiment. Dimethyl sulfide (DMS), methanethiol (MeSH), and benzothiazole accounted for on average over 90 % of total gas-phase sulfur emissions. This work focuses on factors controlling the production and emission of DMS and MeSH and the role of non-DMS molecules (such as MeSH and benzothiazole) in secondary sulfate formation in coastal marine environments.
Céline Ridame, Julie Dinasquet, Søren Hallstrøm, Estelle Bigeard, Lasse Riemann, France Van Wambeke, Matthieu Bressac, Elvira Pulido-Villena, Vincent Taillandier, Fréderic Gazeau, Antonio Tovar-Sanchez, Anne-Claire Baudoux, and Cécile Guieu
Biogeosciences, 19, 415–435, https://doi.org/10.5194/bg-19-415-2022, https://doi.org/10.5194/bg-19-415-2022, 2022
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We show that in the Mediterranean Sea spatial variability in N2 fixation is related to the diazotrophic community composition reflecting different nutrient requirements among species. Nutrient supply by Saharan dust is of great importance to diazotrophs, as shown by the strong stimulation of N2 fixation after a simulated dust event under present and future climate conditions; the magnitude of stimulation depends on the degree of limitation related to the diazotrophic community composition.
Malek Belgacem, Katrin Schroeder, Alexander Barth, Charles Troupin, Bruno Pavoni, Patrick Raimbault, Nicole Garcia, Mireno Borghini, and Jacopo Chiggiato
Earth Syst. Sci. Data, 13, 5915–5949, https://doi.org/10.5194/essd-13-5915-2021, https://doi.org/10.5194/essd-13-5915-2021, 2021
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The Mediterranean Sea exhibits an anti-estuarine circulation, responsible for its low productivity. Understanding this peculiar character is still a challenge since there is no exact quantification of nutrient sinks and sources. Because nutrient in situ observations are generally infrequent and scattered in space and time, climatological mapping is often applied to sparse data in order to understand the biogeochemical state of the ocean. The dataset presented here partly addresses these issues.
Sebastian Landwehr, Michele Volpi, F. Alexander Haumann, Charlotte M. Robinson, Iris Thurnherr, Valerio Ferracci, Andrea Baccarini, Jenny Thomas, Irina Gorodetskaya, Christian Tatzelt, Silvia Henning, Rob L. Modini, Heather J. Forrer, Yajuan Lin, Nicolas Cassar, Rafel Simó, Christel Hassler, Alireza Moallemi, Sarah E. Fawcett, Neil Harris, Ruth Airs, Marzieh H. Derkani, Alberto Alberello, Alessandro Toffoli, Gang Chen, Pablo Rodríguez-Ros, Marina Zamanillo, Pau Cortés-Greus, Lei Xue, Conor G. Bolas, Katherine C. Leonard, Fernando Perez-Cruz, David Walton, and Julia Schmale
Earth Syst. Dynam., 12, 1295–1369, https://doi.org/10.5194/esd-12-1295-2021, https://doi.org/10.5194/esd-12-1295-2021, 2021
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The Antarctic Circumnavigation Expedition surveyed a large number of variables describing the dynamic state of ocean and atmosphere, freshwater cycle, atmospheric chemistry, ocean biogeochemistry, and microbiology in the Southern Ocean. To reduce the dimensionality of the dataset, we apply a sparse principal component analysis and identify temporal patterns from diurnal to seasonal cycles, as well as geographical gradients and
hotspotsof interaction. Code and data are open access.
Cynthia Evelyn Bluteau, Peter S. Galbraith, Daniel Bourgault, Vincent Villeneuve, and Jean-Éric Tremblay
Ocean Sci., 17, 1509–1525, https://doi.org/10.5194/os-17-1509-2021, https://doi.org/10.5194/os-17-1509-2021, 2021
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In 2018, the Canadian Coast Guard approved a science team to sample in tandem with its ice-breaking and ship escorting operations. This collaboration provided the first mixing observations during winter that covered the largest spatial extent of the St. Lawrence Estuary and the Gulf of St. Lawrence ever measured in any season. Contrary to previous assumptions, we demonstrate that fluvial nitrate inputs from upstream (i.e., Great Lakes) are the most significant source of nitrate in the estuary.
Elianne Egge, Stephanie Elferink, Daniel Vaulot, Uwe John, Gunnar Bratbak, Aud Larsen, and Bente Edvardsen
Earth Syst. Sci. Data, 13, 4913–4928, https://doi.org/10.5194/essd-13-4913-2021, https://doi.org/10.5194/essd-13-4913-2021, 2021
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Here we present a dataset of DNA sequences obtained from size-fractionated seawater samples from the Arctic Ocean that are used to identify taxonomic groups of unicellular plankton. This dataset can be used to investigate the diversity and distribution of plankton groups both by season and by depth and thus increase our understanding of the factors influencing the dynamics of this important part of the Arctic marine ecosystem.
France Van Wambeke, Vincent Taillandier, Karine Desboeufs, Elvira Pulido-Villena, Julie Dinasquet, Anja Engel, Emilio Marañón, Céline Ridame, and Cécile Guieu
Biogeosciences, 18, 5699–5717, https://doi.org/10.5194/bg-18-5699-2021, https://doi.org/10.5194/bg-18-5699-2021, 2021
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Simultaneous in situ measurements of (dry and wet) atmospheric deposition and biogeochemical stocks and fluxes in the sunlit waters of the open Mediterranean Sea revealed complex physical and biological processes occurring within the mixed layer. Nitrogen (N) budgets were computed to compare the sources and sinks of N in the mixed layer. The transitory effect observed after a wet dust deposition impacted the microbial food web down to the deep chlorophyll maximum.
Kate E. Ashley, Xavier Crosta, Johan Etourneau, Philippine Campagne, Harry Gilchrist, Uthmaan Ibraheem, Sarah E. Greene, Sabine Schmidt, Yvette Eley, Guillaume Massé, and James Bendle
Biogeosciences, 18, 5555–5571, https://doi.org/10.5194/bg-18-5555-2021, https://doi.org/10.5194/bg-18-5555-2021, 2021
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We explore the potential for the use of carbon isotopes of algal fatty acid as a new proxy for past primary productivity in Antarctic coastal zones. Coastal polynyas are hotspots of primary productivity and are known to draw down CO2 from the atmosphere. Reconstructions of past productivity changes could provide a baseline for the role of these areas as sinks for atmospheric CO2.
Frédéric Gazeau, France Van Wambeke, Emilio Marañón, Maria Pérez-Lorenzo, Samir Alliouane, Christian Stolpe, Thierry Blasco, Nathalie Leblond, Birthe Zäncker, Anja Engel, Barbara Marie, Julie Dinasquet, and Cécile Guieu
Biogeosciences, 18, 5423–5446, https://doi.org/10.5194/bg-18-5423-2021, https://doi.org/10.5194/bg-18-5423-2021, 2021
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Our study shows that the impact of dust deposition on primary production depends on the initial composition and metabolic state of the tested community and is constrained by the amount of nutrients added, to sustain both the fast response of heterotrophic prokaryotes and the delayed one of phytoplankton. Under future environmental conditions, heterotrophic metabolism will be more impacted than primary production, therefore reducing the capacity of surface waters to sequester anthropogenic CO2.
Christophe Perron, Christian Katlein, Simon Lambert-Girard, Edouard Leymarie, Louis-Philippe Guinard, Pierre Marquet, and Marcel Babin
The Cryosphere, 15, 4483–4500, https://doi.org/10.5194/tc-15-4483-2021, https://doi.org/10.5194/tc-15-4483-2021, 2021
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Characterizing the evolution of inherent optical properties (IOPs) of sea ice in situ is necessary to improve climate and arctic ecosystem models. Here we present the development of an optical probe, based on the spatially resolved diffuse reflectance method, to measure IOPs of a small volume of sea ice (dm3) in situ and non-destructively. For the first time, in situ vertically resolved profiles of the dominant IOP, the reduced scattering coefficient, were obtained for interior sea ice.
Frédéric Gazeau, Céline Ridame, France Van Wambeke, Samir Alliouane, Christian Stolpe, Jean-Olivier Irisson, Sophie Marro, Jean-Michel Grisoni, Guillaume De Liège, Sandra Nunige, Kahina Djaoudi, Elvira Pulido-Villena, Julie Dinasquet, Ingrid Obernosterer, Philippe Catala, and Cécile Guieu
Biogeosciences, 18, 5011–5034, https://doi.org/10.5194/bg-18-5011-2021, https://doi.org/10.5194/bg-18-5011-2021, 2021
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This paper shows that the impacts of Saharan dust deposition in different Mediterranean basins are as strong as those observed in coastal waters but differed substantially between the three tested stations, differences attributed to variable initial metabolic states. A stronger impact of warming and acidification on mineralization suggests a decreased capacity of Mediterranean surface communities to sequester CO2 following the deposition of atmospheric particles in the coming decades.
Gwenaëlle Gremion, Louis-Philippe Nadeau, Christiane Dufresne, Irene R. Schloss, Philippe Archambault, and Dany Dumont
Geosci. Model Dev., 14, 4535–4554, https://doi.org/10.5194/gmd-14-4535-2021, https://doi.org/10.5194/gmd-14-4535-2021, 2021
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An accurate description of detritic organic particles is key to improving estimations of carbon export into the ocean abyss in ocean general circulation models. Yet, most parametrization are numerically impractical due to the required number of tracers needed to resolve the particle size spectrum. Here, a new parametrization that aims to minimize the tracers number while accurately describing the particles dynamics is developed and tested in a series of idealized numerical experiments.
Evelyn Freney, Karine Sellegri, Alessia Nicosia, Leah R. Williams, Matteo Rinaldi, Jonathan T. Trueblood, André S. H. Prévôt, Melilotus Thyssen, Gérald Grégori, Nils Haëntjens, Julie Dinasquet, Ingrid Obernosterer, France Van Wambeke, Anja Engel, Birthe Zäncker, Karine Desboeufs, Eija Asmi, Hilkka Timonen, and Cécile Guieu
Atmos. Chem. Phys., 21, 10625–10641, https://doi.org/10.5194/acp-21-10625-2021, https://doi.org/10.5194/acp-21-10625-2021, 2021
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In this work, we present observations of the organic aerosol content in primary sea spray aerosols (SSAs) continuously generated along a 5-week cruise in the Mediterranean. This information is combined with seawater biogeochemical properties also measured continuously along the ship track to develop a number of parametrizations that can be used in models to determine SSA organic content in oligotrophic waters that represent 60 % of the oceans from commonly measured seawater variables.
Charlotte M. Beall, Jennifer M. Michaud, Meredith A. Fish, Julie Dinasquet, Gavin C. Cornwell, M. Dale Stokes, Michael D. Burkart, Thomas C. Hill, Paul J. DeMott, and Kimberly A. Prather
Atmos. Chem. Phys., 21, 9031–9045, https://doi.org/10.5194/acp-21-9031-2021, https://doi.org/10.5194/acp-21-9031-2021, 2021
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Ice-nucleating particles (INPs) can influence multiple climate-relevant cloud properties by triggering droplet freezing at relative humidities below or temperatures above the freezing point of water. The ocean is a significant INP source; however, the specific identities of marine INPs remain largely unknown. Here, we identify 14 ice-nucleating microbes from aerosol and precipitation samples collected at a coastal site in southern California, two or more of which are likely marine.
Philippe Massicotte, Rainer M. W. Amon, David Antoine, Philippe Archambault, Sergio Balzano, Simon Bélanger, Ronald Benner, Dominique Boeuf, Annick Bricaud, Flavienne Bruyant, Gwenaëlle Chaillou, Malik Chami, Bruno Charrière, Jing Chen, Hervé Claustre, Pierre Coupel, Nicole Delsaut, David Doxaran, Jens Ehn, Cédric Fichot, Marie-Hélène Forget, Pingqing Fu, Jonathan Gagnon, Nicole Garcia, Beat Gasser, Jean-François Ghiglione, Gaby Gorsky, Michel Gosselin, Priscillia Gourvil, Yves Gratton, Pascal Guillot, Hermann J. Heipieper, Serge Heussner, Stanford B. Hooker, Yannick Huot, Christian Jeanthon, Wade Jeffrey, Fabien Joux, Kimitaka Kawamura, Bruno Lansard, Edouard Leymarie, Heike Link, Connie Lovejoy, Claudie Marec, Dominique Marie, Johannie Martin, Jacobo Martín, Guillaume Massé, Atsushi Matsuoka, Vanessa McKague, Alexandre Mignot, William L. Miller, Juan-Carlos Miquel, Alfonso Mucci, Kaori Ono, Eva Ortega-Retuerta, Christos Panagiotopoulos, Tim Papakyriakou, Marc Picheral, Louis Prieur, Patrick Raimbault, Joséphine Ras, Rick A. Reynolds, André Rochon, Jean-François Rontani, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Yuan Shen, Guisheng Song, Dariusz Stramski, Eri Tachibana, Alexandre Thirouard, Imma Tolosa, Jean-Éric Tremblay, Mickael Vaïtilingom, Daniel Vaulot, Frédéric Vaultier, John K. Volkman, Huixiang Xie, Guangming Zheng, and Marcel Babin
Earth Syst. Sci. Data, 13, 1561–1592, https://doi.org/10.5194/essd-13-1561-2021, https://doi.org/10.5194/essd-13-1561-2021, 2021
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The MALINA oceanographic expedition was conducted in the Mackenzie River and the Beaufort Sea systems. The sampling was performed across seven shelf–basin transects to capture the meridional gradient between the estuary and the open ocean. The main goal of this research program was to better understand how processes such as primary production are influencing the fate of organic matter originating from the surrounding terrestrial landscape during its transition toward the Arctic Ocean.
France Van Wambeke, Elvira Pulido, Philippe Catala, Julie Dinasquet, Kahina Djaoudi, Anja Engel, Marc Garel, Sophie Guasco, Barbara Marie, Sandra Nunige, Vincent Taillandier, Birthe Zäncker, and Christian Tamburini
Biogeosciences, 18, 2301–2323, https://doi.org/10.5194/bg-18-2301-2021, https://doi.org/10.5194/bg-18-2301-2021, 2021
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Michaelis–Menten kinetics were determined for alkaline phosphatase, aminopeptidase and β-glucosidase in the Mediterranean Sea. Although the ectoenzymatic-hydrolysis contribution to heterotrophic prokaryotic needs was high in terms of N, it was low in terms of C. This study points out the biases in interpretation of the relative differences in activities among the three tested enzymes in regard to the choice of added concentrations of fluorogenic substrates.
Jonathan V. Trueblood, Alessia Nicosia, Anja Engel, Birthe Zäncker, Matteo Rinaldi, Evelyn Freney, Melilotus Thyssen, Ingrid Obernosterer, Julie Dinasquet, Franco Belosi, Antonio Tovar-Sánchez, Araceli Rodriguez-Romero, Gianni Santachiara, Cécile Guieu, and Karine Sellegri
Atmos. Chem. Phys., 21, 4659–4676, https://doi.org/10.5194/acp-21-4659-2021, https://doi.org/10.5194/acp-21-4659-2021, 2021
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Sea spray aerosols (SSAs) can be an important source of ice-nucleating particles (INPs) that impact cloud properties over the oceans. In the Mediterranean Sea, we found that the INPs in the seawater surface microlayer increased by an order of magnitude after a rain dust event that impacted iron and bacterial abundances. The INP properties of SSA (INPSSA) increased after a 3 d delay. Outside this event, INPSSA could be parameterized as a function of the seawater biogeochemistry.
Antoine Gagnon-Poiré, Pierre Brigode, Pierre Francus, David Fortin, Patrick Lajeunesse, Hugues Dorion, and Annie-Pier Trottier
Clim. Past, 17, 653–673, https://doi.org/10.5194/cp-17-653-2021, https://doi.org/10.5194/cp-17-653-2021, 2021
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A very high quality 160-year-long annually laminated (varved) sediment sequence of fluvial origin was recently discovered in an especially deep lake in Labrador. Each varve represents 1 hydrological year. A significant relation between varves' physical parameters (i.e., thickness and grain size extracted from each annual lamination) and river discharge instrumental observations provided the opportunity to develop regional discharge reconstructions beyond the instrumental period.
Emilio Marañón, France Van Wambeke, Julia Uitz, Emmanuel S. Boss, Céline Dimier, Julie Dinasquet, Anja Engel, Nils Haëntjens, María Pérez-Lorenzo, Vincent Taillandier, and Birthe Zäncker
Biogeosciences, 18, 1749–1767, https://doi.org/10.5194/bg-18-1749-2021, https://doi.org/10.5194/bg-18-1749-2021, 2021
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The concentration of chlorophyll is commonly used as an indicator of the abundance of photosynthetic plankton (phytoplankton) in lakes and oceans. Our study investigates why a deep chlorophyll maximum, located near the bottom of the upper, illuminated layer develops in the Mediterranean Sea. We find that the acclimation of cells to low light is the main mechanism involved and that this deep maximum represents also a maximum in the biomass and carbon fixation activity of phytoplankton.
Paul J. Tréguer, Jill N. Sutton, Mark Brzezinski, Matthew A. Charette, Timothy Devries, Stephanie Dutkiewicz, Claudia Ehlert, Jon Hawkings, Aude Leynaert, Su Mei Liu, Natalia Llopis Monferrer, María López-Acosta, Manuel Maldonado, Shaily Rahman, Lihua Ran, and Olivier Rouxel
Biogeosciences, 18, 1269–1289, https://doi.org/10.5194/bg-18-1269-2021, https://doi.org/10.5194/bg-18-1269-2021, 2021
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Silicon is the second most abundant element of the Earth's crust. In this review, we show that silicon inputs and outputs, to and from the world ocean, are 57 % and 37 % higher, respectively, than previous estimates. These changes are significant, modifying factors such as the geochemical residence time of silicon, which is now about 8000 years and 2 times faster than previously assumed. We also update the total biogenic silica pelagic production and provide an estimate for sponge production.
Betty Croft, Randall V. Martin, Richard H. Moore, Luke D. Ziemba, Ewan C. Crosbie, Hongyu Liu, Lynn M. Russell, Georges Saliba, Armin Wisthaler, Markus Müller, Arne Schiller, Martí Galí, Rachel Y.-W. Chang, Erin E. McDuffie, Kelsey R. Bilsback, and Jeffrey R. Pierce
Atmos. Chem. Phys., 21, 1889–1916, https://doi.org/10.5194/acp-21-1889-2021, https://doi.org/10.5194/acp-21-1889-2021, 2021
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North Atlantic Aerosols and Marine Ecosystems Study measurements combined with GEOS-Chem-TOMAS modeling suggest that several not-well-understood key factors control northwest Atlantic aerosol number and size. These synergetic and climate-relevant factors include particle formation near and above the marine boundary layer top, particle growth by marine secondary organic aerosol on descent, particle formation/growth related to dimethyl sulfide, sea spray aerosol, and ship emissions.
Kate E. Ashley, Robert McKay, Johan Etourneau, Francisco J. Jimenez-Espejo, Alan Condron, Anna Albot, Xavier Crosta, Christina Riesselman, Osamu Seki, Guillaume Massé, Nicholas R. Golledge, Edward Gasson, Daniel P. Lowry, Nicholas E. Barrand, Katelyn Johnson, Nancy Bertler, Carlota Escutia, Robert Dunbar, and James A. Bendle
Clim. Past, 17, 1–19, https://doi.org/10.5194/cp-17-1-2021, https://doi.org/10.5194/cp-17-1-2021, 2021
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We present a multi-proxy record of Holocene glacial meltwater input, sediment transport, and sea-ice variability off East Antarctica. Our record shows that a rapid Antarctic sea-ice increase during the mid-Holocene (~ 4.5 ka) occurred against a backdrop of increasing glacial meltwater input and gradual climate warming. We suggest that mid-Holocene ice shelf cavity expansion led to cooling of surface waters and sea-ice growth, which slowed basal ice shelf melting.
Rafael Rasse, Hervé Claustre, and Antoine Poteau
Biogeosciences, 17, 6491–6505, https://doi.org/10.5194/bg-17-6491-2020, https://doi.org/10.5194/bg-17-6491-2020, 2020
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Short summary
Here, data collected by BGC-Argo floats are used to investigate the origin of the suspended small-particle layer inferred from optical sensors in the oxygen-poor Black Sea. Our results suggest that this layer is at least partially composed of the microbial communities that produce dinitrogen. We propose that oxygen and the optically derived small-particle layer can be used in combination to refine delineation of the effective N2-yielding section of the Black Sea and oxygen-deficient zones.
Kahina Djaoudi, France Van Wambeke, Aude Barani, Nagib Bhairy, Servanne Chevaillier, Karine Desboeufs, Sandra Nunige, Mohamed Labiadh, Thierry Henry des Tureaux, Dominique Lefèvre, Amel Nouara, Christos Panagiotopoulos, Marc Tedetti, and Elvira Pulido-Villena
Biogeosciences, 17, 6271–6285, https://doi.org/10.5194/bg-17-6271-2020, https://doi.org/10.5194/bg-17-6271-2020, 2020
Chantal Mears, Helmuth Thomas, Paul B. Henderson, Matthew A. Charette, Hugh MacIntyre, Frank Dehairs, Christophe Monnin, and Alfonso Mucci
Biogeosciences, 17, 4937–4959, https://doi.org/10.5194/bg-17-4937-2020, https://doi.org/10.5194/bg-17-4937-2020, 2020
Short summary
Short summary
Major research initiatives have been undertaken within the Arctic Ocean, highlighting this area's global importance and vulnerability to climate change. In 2015, the international GEOTRACES program addressed this importance by devoting intense research activities to the Arctic Ocean. Among various tracers, we used radium and carbonate system data to elucidate the functioning and vulnerability of the hydrographic regime of the Canadian Arctic Archipelago, bridging the Pacific and Atlantic oceans.
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Short summary
This paper presents a dataset acquired during a research cruise held in Baffin Bay in 2016. We observed that the disappearance of sea ice in the Arctic Ocean increases both the length and spatial extent of the phytoplankton growth season. In the future, this will impact the food webs on which the local populations depend for their food supply and fisheries. This dataset will provide insight into quantifying these impacts and help the decision-making process for policymakers.
This paper presents a dataset acquired during a research cruise held in Baffin Bay in 2016. We...
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