Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest
International audience Extreme weather events affect coastal marine ecosystems. The increase in intensity and occurrence of such events drive modifications in coastal hydrology and hydrodynamics. Here, focusing on the winter period (from December to March), we investigated multi-decade (2000–2018) c...
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Online Access: | https://hal.archives-ouvertes.fr/hal-03326596 https://doi.org/10.3389/fmars.2021.705403 |
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ftccsdartic:oai:HAL:hal-03326596v1 2023-05-15T17:34:22+02:00 Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest Poppeschi, Coline Charria, Guillaume Goberville, Eric Rimmelin-Maury, Peggy Barrier, Nicolas Petton, Sébastien Unterberger, Maximilian Grossteffan, Emilie Repecaud, Michel Quéméner, Loïc Theetten, Sébastien Le Roux, Jean-François Tréguer, Paul Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) 2021-07-21 https://hal.archives-ouvertes.fr/hal-03326596 https://doi.org/10.3389/fmars.2021.705403 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.705403 hal-03326596 https://hal.archives-ouvertes.fr/hal-03326596 doi:10.3389/fmars.2021.705403 ISSN: 2296-7745 Frontiers in Marine Science https://hal.archives-ouvertes.fr/hal-03326596 Frontiers in Marine Science, Frontiers Media, 2021, 8, ⟨10.3389/fmars.2021.705403⟩ [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.3389/fmars.2021.705403 2021-12-05T00:03:24Z International audience Extreme weather events affect coastal marine ecosystems. The increase in intensity and occurrence of such events drive modifications in coastal hydrology and hydrodynamics. Here, focusing on the winter period (from December to March), we investigated multi-decade (2000–2018) changes in the hydrological properties of the Bay of Brest (French Atlantic coast) as an example of the response of a semi-enclosed bay to extreme weather episodes and large-scale atmospheric circulation patterns. The relationships between extreme weather events and severe low salinity conditions (as a proxy for changes in water density) were investigated using high-frequency in situ observations and high-resolution numerical simulations. The identification of intense episodes was based on the timing, duration, and annual occurrence of extreme events. By examining the interannual variability of extreme low salinity events, we detect a patent influence of local and regional weather conditions on atmospheric and oceanic circulation patterns, precipitation, and river runoff. We revealed that low salinity events in Brittany were controlled by large-scale forcings: they prevailed during the positive phase of the North Atlantic Oscillation and periods of low occurrences of the Atlantic Ridge weather regime. The increase in severe storms observed in western France since 2010 has led to a doubling of the occurrence and duration of extreme low salinity events in Brittany. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Frontiers in Marine Science 8 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Poppeschi, Coline Charria, Guillaume Goberville, Eric Rimmelin-Maury, Peggy Barrier, Nicolas Petton, Sébastien Unterberger, Maximilian Grossteffan, Emilie Repecaud, Michel Quéméner, Loïc Theetten, Sébastien Le Roux, Jean-François Tréguer, Paul Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
topic_facet |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Extreme weather events affect coastal marine ecosystems. The increase in intensity and occurrence of such events drive modifications in coastal hydrology and hydrodynamics. Here, focusing on the winter period (from December to March), we investigated multi-decade (2000–2018) changes in the hydrological properties of the Bay of Brest (French Atlantic coast) as an example of the response of a semi-enclosed bay to extreme weather episodes and large-scale atmospheric circulation patterns. The relationships between extreme weather events and severe low salinity conditions (as a proxy for changes in water density) were investigated using high-frequency in situ observations and high-resolution numerical simulations. The identification of intense episodes was based on the timing, duration, and annual occurrence of extreme events. By examining the interannual variability of extreme low salinity events, we detect a patent influence of local and regional weather conditions on atmospheric and oceanic circulation patterns, precipitation, and river runoff. We revealed that low salinity events in Brittany were controlled by large-scale forcings: they prevailed during the positive phase of the North Atlantic Oscillation and periods of low occurrences of the Atlantic Ridge weather regime. The increase in severe storms observed in western France since 2010 has led to a doubling of the occurrence and duration of extreme low salinity events in Brittany. |
author2 |
Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) |
format |
Article in Journal/Newspaper |
author |
Poppeschi, Coline Charria, Guillaume Goberville, Eric Rimmelin-Maury, Peggy Barrier, Nicolas Petton, Sébastien Unterberger, Maximilian Grossteffan, Emilie Repecaud, Michel Quéméner, Loïc Theetten, Sébastien Le Roux, Jean-François Tréguer, Paul |
author_facet |
Poppeschi, Coline Charria, Guillaume Goberville, Eric Rimmelin-Maury, Peggy Barrier, Nicolas Petton, Sébastien Unterberger, Maximilian Grossteffan, Emilie Repecaud, Michel Quéméner, Loïc Theetten, Sébastien Le Roux, Jean-François Tréguer, Paul |
author_sort |
Poppeschi, Coline |
title |
Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
title_short |
Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
title_full |
Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
title_fullStr |
Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
title_full_unstemmed |
Unraveling Salinity Extreme Events in Coastal Environments: A Winter Focus on the Bay of Brest |
title_sort |
unraveling salinity extreme events in coastal environments: a winter focus on the bay of brest |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03326596 https://doi.org/10.3389/fmars.2021.705403 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.archives-ouvertes.fr/hal-03326596 Frontiers in Marine Science, Frontiers Media, 2021, 8, ⟨10.3389/fmars.2021.705403⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.705403 hal-03326596 https://hal.archives-ouvertes.fr/hal-03326596 doi:10.3389/fmars.2021.705403 |
op_doi |
https://doi.org/10.3389/fmars.2021.705403 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
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1766133171530760192 |