{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,6]],"date-time":"2025-12-06T04:49:09Z","timestamp":1764996549103,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2024,8,1]],"date-time":"2024-08-01T00:00:00Z","timestamp":1722470400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This paper aims to analyze the North Brazil Current (NBC) rings during the initial 5 months of 2020 using surface currents derived from Automatic Identification System (AIS) data in comparison with altimetry-based Archiving, Validation and Interpretation of Satellite Oceanographic Data (AVISO) current fields. The region of NBC rings is characterized by relatively high marine traffic, facilitating an accurate current estimation. Our investigation primarily focused on a brief period coinciding with intensive in situ measurements (EUREC4A-OA experiment). The Angular Momentum Eddy Detection and tracking Algorithm (AMEDA) detection algorithm was then employed to detect and track eddies in both fields. Subsequently, a particular NBC ring present in the region in January and February 2020 was examined. The comparison demonstrated that AIS data exhibited the precision and resolution necessary to effectively identify the NBC rings and smaller surrounding eddies, aligning well with other datasets such as in situ measurements, sea surface temperature (SST), and sea surface salinity (SSS) data. Moreover, we established that AIS data yielded accurate regional velocity fields, as evidenced by an analysis of energy spectra. Furthermore, our analysis revealed that AIS data captured aspects of eddy\u2013eddy interactions which were not adequately depicted in AVISO fields.<\/jats:p>","DOI":"10.3390\/rs16152828","type":"journal-article","created":{"date-parts":[[2024,8,1]],"date-time":"2024-08-01T12:38:20Z","timestamp":1722515900000},"page":"2828","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The Analysis of North Brazil Current Rings from Automatic Identification System Data and Altimetric Currents"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8614-7633","authenticated-orcid":false,"given":"Brahim","family":"Boussidi","sequence":"first","affiliation":[{"name":"eOdyn, 115 Rue Claude Chappe, 29280 Plouzan\u00e9, France"}]},{"given":"Cl\u00e9ment","family":"Le Goff","sequence":"additional","affiliation":[{"name":"eOdyn, 115 Rue Claude Chappe, 29280 Plouzan\u00e9, France"}]},{"given":"Corentin","family":"Galard","sequence":"additional","affiliation":[{"name":"eOdyn, 115 Rue Claude Chappe, 29280 Plouzan\u00e9, France"},{"name":"Laboratoire d\u2019Oc\u00e9anographie Physique et Spatiale (LOPS), Institut Universitaire Europ\u00e9en de la Mer IUEM, Universit\u00e9 de Bretagne Occidentale (UBO), Brest, CNRS, IRD, Ifremer, 29280 Plouzan\u00e9, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7849-6611","authenticated-orcid":false,"given":"Xavier","family":"Carton","sequence":"additional","affiliation":[{"name":"Laboratoire d\u2019Oc\u00e9anographie Physique et Spatiale (LOPS), Institut Universitaire Europ\u00e9en de la Mer IUEM, Universit\u00e9 de Bretagne Occidentale (UBO), Brest, CNRS, IRD, Ifremer, 29280 Plouzan\u00e9, France"}]},{"given":"Sabrina","family":"Speich","sequence":"additional","affiliation":[{"name":"Laboratoire de M\u00e9t\u00e9orologie Dynamique\u2014IPSL, Ecole Normale Sup\u00e9rieure, 75005 Paris, France"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"758","DOI":"10.1175\/1520-0485(1990)020<0758:WMOME>2.0.CO;2","article-title":"Westward motion of mesoscale eddies","volume":"20","author":"Tang","year":"1990","journal-title":"J. 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