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Trueblood, Jonathan, V; Nicosia, Alessia; Engel, Anja; Zancker, Birthe; Rinaldi, Matteo; Freney, Evelyn; Thyssen, Melilotus; Obernosterer, Ingrid; Dinasquet, Julie; Belosi, Franco; Tovar-sanchez, Antonio; Rodriguez-romero, Araceli; Santachiara, Gianni; Guieu, Cecile; Sellegri, Karine. |
Ice-nucleating particles (INPs) have a large impact on the climate-relevant properties of clouds over the oceans. Studies have shown that sea spray aerosols (SSAs), produced upon bursting of bubbles at the ocean surface, can be an important source of marine INPs, particularly during periods of enhanced biological productivity. Recent mesocosm experiments using natural seawater spiked with nutrients have revealed that marine INPs are derived from two separate classes of organic matter in SSAs. Despite this finding, existing parameterizations for marine INP abundance are based solely on single variables such as SSA organic carbon (OC) or SSA surface area, which may mask specific trends in the separate classes of INP. The goal of this paper is to improve the... |
Tipo: Text |
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Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79985/82974.pdf |
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Tovar-sanchez, Antonio; Rodriguez-romero, Araceli; Engel, Anja; Zancker, Birthe; Fu, Franck; Maranon, Emilio; Perez-lorenzo, Maria; Bressac, Matthieu; Wagener, Thibault; Desboeufs, Karine; Triquet, Sylvain; Siour, Guillaume; Guieu, Cécile. |
The Sea Surface Microlayer (SML) is known to be enriched in trace metals relative to the underlaying water and to harbor diverse microbial communities (i.e. neuston). However, the processes linking metals and biota in the SML are not yet fully understood. In this study, we analyzed the metal (Cd, Co, Cu, Fe, Ni, Mo, V, Zn and Pb) concentrations in aerosol samples, SML (dissolved and total fractions) and in subsurface waters (SSW; dissolved fraction at ~ 1 m depth) from the Western Mediterranean Sea during a cruise in May–June 2017. The bacterial community composition and abundance in the SML and SSW, and the primary production and Chl-a in the SSW were measured simultaneously at all stations during the cruise. Residence times of particulate metals derived... |
Tipo: Text |
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Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00590/70254/68302.pdf |
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