Sargassum Floating Algae Index Detection - Sentinel-3A&B
Maps of sargassum detection index NFAI (Normalized Floating Algae Index) using OLCI ocean color sensor on-board Sentinel-3A & Sentinel-3B satellites. Maps are delivered at 300m resolution in the Tropical Atlantic from Gulf of Guinea to Gulf of Mexico.
Two kind of dataset:
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Reanalysis : Weekly gridded products provided in delayed time for the year 2019 (2018/12/26 to 2019/12/31) produced in the frame of the e-shape project https://e-shape.eu/ . Each map represents the sargassum presence index averaged over one week and at 1 km resolution.
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Daily gridded products provided in near-real-time since February 2022 to a month before current date, made available as part of CNES SCO SeSaM project (https://www.spaceclimateobservatory.org/sesam). Each map represents the sargassum presence at 300m (high HR) or 1km (low LR) resolution.
Data and resources
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Weekly mean of mean value of normalized floating algae index in binsize degree cellWMS Open
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Delayed-time Floating Sargassum Algae detection - Sentinel-3A&BHTML Open
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Manuel utilisateur AVISOPDF Open
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Near-real-time LR - Floating Sargassum Algae detection - Sentinel3A&BHTML Open
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Near-real-time HR - Floating Sargassum Algae detection - Sentinel3A&BHTML Open
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HTML Open
Additional information
| Temporal extent | 2018-12-26 – ongoing |
|---|---|
| Date (creation) | 2022-04-20 |
| Date (publication) | 2022-05-16 |
| Status | onGoing |
| Update frequency | asNeeded |
| Metadata language | fr |
| License | Licence ouverte |
| Source metadata | ISO 19115 XML |
| Last updated | 2026-11-04 |
| Created | 2026-11-04 |
| API | package_show |