Surface ocean microbiota determine cloud precursors

Type Article
Date 2021-12
Language English
Author(s) Sellegri Karine1, Nicosia Alessia1, Freney Evelyn1, Uitz Julia2, Thyssen Melilotus3, Grégori Gérald3, Engel Anja4, Zäncker Birthe4, Haëntjens Nils5, Mas Sébastien6, Picard David1, Saint-Macary Alexia7, 8, Peltola Maija1, Rose Clémence1, Trueblood Jonathan1, Lefevre Dominique3, D’anna Barbara9, Desboeufs Karine10, Meskhidze Nicholas11, Guieu Cécile2, Law Cliff S.7, 8
Affiliation(s) 1 : Laboratoire de Météorologie Physique (LaMP), Université Clermont Auvergne, CNRS, 63000, Clermont-Ferrand, France
2 : Laboratoire d’Océanographie de Villefranche (LOV), Sorbonne Université, CNRS, 06230, Villefranche-sur-Mer, France
3 : Mediterranean Institute of Oceanography UM110, Aix-Marseille University, Toulon University, CNRS, IRD, 13288, Marseille, France
4 : GEOMAR, Helmholtz Centre for Ocean Research, 24105, Kiel, Germany
5 : School of Marine Sciences, University of Maine, Orono, ME, 04469, USA
6 : MEDIMEER, UMS3282 OSU OREME, Université de Montpellier, CNRS, IRD, Sète, France
7 : National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand
8 : Department of Marine Sciences, University of Otago, Dunedin, New Zealand
9 : Laboratoire Chimie Environnement (LCE), UMR 7673 CNRS, Université Aix-Marseille, 13331, Marseille, France
10 : LISA, UMR CNRS 7583, Institut Pierre Simon Laplace (IPSL), Université de Paris, Université Paris-Est-Créteil, Créteil, France
11 : North Carolina State University, Raleigh, USA
Source Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2021-12 , Vol. 11 , N. 1 , P. 281 (11p.)
DOI 10.1038/s41598-020-78097-5
Abstract

One pathway by which the oceans influence climate is via the emission of sea spray that may subsequently influence cloud properties. Sea spray emissions are known to be dependent on atmospheric and oceanic physicochemical parameters, but the potential role of ocean biology on sea spray fluxes remains poorly characterized. Here we show a consistent significant relationship between seawater nanophytoplankton cell abundances and sea-spray derived Cloud Condensation Nuclei (CCN) number fluxes, generated using water from three different oceanic regions. This sensitivity of CCN number fluxes to ocean biology is currently unaccounted for in climate models yet our measurements indicate that it influences fluxes by more than one order of magnitude over the range of phytoplankton investigated.

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Sellegri Karine, Nicosia Alessia, Freney Evelyn, Uitz Julia, Thyssen Melilotus, Grégori Gérald, Engel Anja, Zäncker Birthe, Haëntjens Nils, Mas Sébastien, Picard David, Saint-Macary Alexia, Peltola Maija, Rose Clémence, Trueblood Jonathan, Lefevre Dominique, D’anna Barbara, Desboeufs Karine, Meskhidze Nicholas, Guieu Cécile, Law Cliff S. (2021). Surface ocean microbiota determine cloud precursors. Scientific Reports, 11(1), 281 (11p.). Publisher's official version : https://doi.org/10.1038/s41598-020-78097-5 , Open Access version : https://archimer.ifremer.fr/doc/00669/78077/