Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic
International audience Since 2011, huge amounts of Sargassum algae are detected in the equatorial Atlantic, causing large strandings events on the coasts of the West Indies, Brazil and West Africa. The distribution of this stock shows strong annual and interannual variability, whose drivers are not...
Published in: | Marine Pollution Bulletin |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Online Access: | https://hal.science/hal-02925638 https://hal.science/hal-02925638/document https://hal.science/hal-02925638/file/Berline_MPB2020_HAL.pdf https://doi.org/10.1016/j.marpolbul.2020.111431 |
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ftunivaixmarseil:oai:HAL:hal-02925638v1 |
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openpolar |
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Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
Lagrangian transport forecast aggregation distribution annual cycle MODIS AFAI [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Lagrangian transport forecast aggregation distribution annual cycle MODIS AFAI [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology Berline, L. Ody, Anouck Jouanno, Julien Chevalier, Cristele André, Jean-Michel Thibaut, Thierry Ménard, Frédéric Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
topic_facet |
Lagrangian transport forecast aggregation distribution annual cycle MODIS AFAI [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Since 2011, huge amounts of Sargassum algae are detected in the equatorial Atlantic, causing large strandings events on the coasts of the West Indies, Brazil and West Africa. The distribution of this stock shows strong annual and interannual variability, whose drivers are not settled yet. Here we use satellite Sargassum observations from MODIS and currents from an ocean reanalysis to simulate the passive transport of algae in 2017. Wind effect was necessary to fit the observed distribution. Simulations reasonably reproduce the satellite monthly distribution for up to seven months, confirming the prominent role of transport in the distribution cycle. Annual cycle appears as a zonal exchange between eastern (EAR) and western accumulation regions (WAR). EAR is well explained by advection alone, with sharp meridional distribution controlled by converging currents below the inter-tropical Convergence Zone. Instead, WAR is not explained by advection alone, suggesting local growth. |
author2 |
Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Océan du Large et Variabilité Climatique (OLVAC) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Berline, L. Ody, Anouck Jouanno, Julien Chevalier, Cristele André, Jean-Michel Thibaut, Thierry Ménard, Frédéric |
author_facet |
Berline, L. Ody, Anouck Jouanno, Julien Chevalier, Cristele André, Jean-Michel Thibaut, Thierry Ménard, Frédéric |
author_sort |
Berline, L. |
title |
Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
title_short |
Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
title_full |
Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
title_fullStr |
Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
title_full_unstemmed |
Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic |
title_sort |
hindcasting the 2017 dispersal of sargassum algae in the tropical north atlantic |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02925638 https://hal.science/hal-02925638/document https://hal.science/hal-02925638/file/Berline_MPB2020_HAL.pdf https://doi.org/10.1016/j.marpolbul.2020.111431 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0025-326X EISSN: 0025-326X Marine Pollution Bulletin https://hal.science/hal-02925638 Marine Pollution Bulletin, 2020, 158, pp.111431. ⟨10.1016/j.marpolbul.2020.111431⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpolbul.2020.111431 hal-02925638 https://hal.science/hal-02925638 https://hal.science/hal-02925638/document https://hal.science/hal-02925638/file/Berline_MPB2020_HAL.pdf doi:10.1016/j.marpolbul.2020.111431 IRD: fdi:010079457 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.marpolbul.2020.111431 |
container_title |
Marine Pollution Bulletin |
container_volume |
158 |
container_start_page |
111431 |
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1786831216172859392 |
spelling |
ftunivaixmarseil:oai:HAL:hal-02925638v1 2023-12-31T10:20:43+01:00 Hindcasting the 2017 dispersal of Sargassum algae in the Tropical North Atlantic Berline, L. Ody, Anouck Jouanno, Julien Chevalier, Cristele André, Jean-Michel Thibaut, Thierry Ménard, Frédéric Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Océan du Large et Variabilité Climatique (OLVAC) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2020 https://hal.science/hal-02925638 https://hal.science/hal-02925638/document https://hal.science/hal-02925638/file/Berline_MPB2020_HAL.pdf https://doi.org/10.1016/j.marpolbul.2020.111431 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpolbul.2020.111431 hal-02925638 https://hal.science/hal-02925638 https://hal.science/hal-02925638/document https://hal.science/hal-02925638/file/Berline_MPB2020_HAL.pdf doi:10.1016/j.marpolbul.2020.111431 IRD: fdi:010079457 info:eu-repo/semantics/OpenAccess ISSN: 0025-326X EISSN: 0025-326X Marine Pollution Bulletin https://hal.science/hal-02925638 Marine Pollution Bulletin, 2020, 158, pp.111431. ⟨10.1016/j.marpolbul.2020.111431⟩ Lagrangian transport forecast aggregation distribution annual cycle MODIS AFAI [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2020 ftunivaixmarseil https://doi.org/10.1016/j.marpolbul.2020.111431 2023-12-05T23:40:08Z International audience Since 2011, huge amounts of Sargassum algae are detected in the equatorial Atlantic, causing large strandings events on the coasts of the West Indies, Brazil and West Africa. The distribution of this stock shows strong annual and interannual variability, whose drivers are not settled yet. Here we use satellite Sargassum observations from MODIS and currents from an ocean reanalysis to simulate the passive transport of algae in 2017. Wind effect was necessary to fit the observed distribution. Simulations reasonably reproduce the satellite monthly distribution for up to seven months, confirming the prominent role of transport in the distribution cycle. Annual cycle appears as a zonal exchange between eastern (EAR) and western accumulation regions (WAR). EAR is well explained by advection alone, with sharp meridional distribution controlled by converging currents below the inter-tropical Convergence Zone. Instead, WAR is not explained by advection alone, suggesting local growth. Article in Journal/Newspaper North Atlantic Aix-Marseille Université: HAL Marine Pollution Bulletin 158 111431 |