A new Sargassum drift model derived from features tracking in MODIS images
Massive Sargassum stranding events affect erratically numerous countries from the Gulf of Guinea to the Gulf of Mexico. Forecasting transport and stranding of Sargassum aggregates require progress in detection and drift modelling. Here we evaluate the role of currents and wind, i.e. windage, on Sarg...
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Online Access: | https://archimer.ifremer.fr/doc/00822/93349/100154.pdf https://doi.org/10.1016/j.marpolbul.2023.114629 https://archimer.ifremer.fr/doc/00822/93349/ |
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ftarchimer:oai:archimer.ifremer.fr:93349 2024-03-24T09:03:47+00:00 A new Sargassum drift model derived from features tracking in MODIS images Podlejski, Witold Berline, Léo Nerini, David Doglioli, Andrea Lett, Christophe 2023-03 application/pdf https://archimer.ifremer.fr/doc/00822/93349/100154.pdf https://doi.org/10.1016/j.marpolbul.2023.114629 https://archimer.ifremer.fr/doc/00822/93349/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00822/93349/100154.pdf doi:10.1016/j.marpolbul.2023.114629 https://archimer.ifremer.fr/doc/00822/93349/ info:eu-repo/semantics/openAccess restricted use Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2023-03 , Vol. 188 , P. 114629 (9p.) Sargassum algae Computer vision Regression Tracking Remote sensing Drift Collocation Drifter Tropical North Atlantic Time series text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1016/j.marpolbul.2023.114629 2024-02-27T08:55:35Z Massive Sargassum stranding events affect erratically numerous countries from the Gulf of Guinea to the Gulf of Mexico. Forecasting transport and stranding of Sargassum aggregates require progress in detection and drift modelling. Here we evaluate the role of currents and wind, i.e. windage, on Sargassum drift. Sargassum drift is computed from automatic tracking using MODIS 1 km Sargassum detection dataset, and compared to reference surface current and wind estimates from collocated drifters and altimetric products. First, we confirm the strong total wind effect of ≈3 % (≈2 % of pure windage), but also show the existence of a deflection angle of ≈10° between Sargassum drift and wind directions. Second, our results suggest reducing the role of currents on drift to 80 % of its velocity, likely because of Sargassum resistance to flow. These results should significantly improve our understanding of the drivers of Sargassum dynamics and the forecast of stranding events. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Marine Pollution Bulletin 188 114629 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Sargassum algae Computer vision Regression Tracking Remote sensing Drift Collocation Drifter Tropical North Atlantic Time series |
spellingShingle |
Sargassum algae Computer vision Regression Tracking Remote sensing Drift Collocation Drifter Tropical North Atlantic Time series Podlejski, Witold Berline, Léo Nerini, David Doglioli, Andrea Lett, Christophe A new Sargassum drift model derived from features tracking in MODIS images |
topic_facet |
Sargassum algae Computer vision Regression Tracking Remote sensing Drift Collocation Drifter Tropical North Atlantic Time series |
description |
Massive Sargassum stranding events affect erratically numerous countries from the Gulf of Guinea to the Gulf of Mexico. Forecasting transport and stranding of Sargassum aggregates require progress in detection and drift modelling. Here we evaluate the role of currents and wind, i.e. windage, on Sargassum drift. Sargassum drift is computed from automatic tracking using MODIS 1 km Sargassum detection dataset, and compared to reference surface current and wind estimates from collocated drifters and altimetric products. First, we confirm the strong total wind effect of ≈3 % (≈2 % of pure windage), but also show the existence of a deflection angle of ≈10° between Sargassum drift and wind directions. Second, our results suggest reducing the role of currents on drift to 80 % of its velocity, likely because of Sargassum resistance to flow. These results should significantly improve our understanding of the drivers of Sargassum dynamics and the forecast of stranding events. |
format |
Article in Journal/Newspaper |
author |
Podlejski, Witold Berline, Léo Nerini, David Doglioli, Andrea Lett, Christophe |
author_facet |
Podlejski, Witold Berline, Léo Nerini, David Doglioli, Andrea Lett, Christophe |
author_sort |
Podlejski, Witold |
title |
A new Sargassum drift model derived from features tracking in MODIS images |
title_short |
A new Sargassum drift model derived from features tracking in MODIS images |
title_full |
A new Sargassum drift model derived from features tracking in MODIS images |
title_fullStr |
A new Sargassum drift model derived from features tracking in MODIS images |
title_full_unstemmed |
A new Sargassum drift model derived from features tracking in MODIS images |
title_sort |
new sargassum drift model derived from features tracking in modis images |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00822/93349/100154.pdf https://doi.org/10.1016/j.marpolbul.2023.114629 https://archimer.ifremer.fr/doc/00822/93349/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2023-03 , Vol. 188 , P. 114629 (9p.) |
op_relation |
https://archimer.ifremer.fr/doc/00822/93349/100154.pdf doi:10.1016/j.marpolbul.2023.114629 https://archimer.ifremer.fr/doc/00822/93349/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.marpolbul.2023.114629 |
container_title |
Marine Pollution Bulletin |
container_volume |
188 |
container_start_page |
114629 |
_version_ |
1794404785835737088 |