Mobile version

Floating sargassum algae detection with Sentinel-3A&B satellites.

Maps of sargassum detection index NFAI (Normalized Floating Algae Index) using OLCI instruments on-board  Sentinel-3A & Sentinel-3B satellites

Types of dataset: multimission dataset using OLCI ocean color sensor onboard Sentinel-3A & Sentinel-3B satellites.

DOI10.24400/527896/a01-2022.007  -  more metadata

Contents: sargassum detection index (NFAI) maps computed from daily images of OLCI Sentinel-3A & 3B at 300m and 1km resolution since February 2022 to date. Weekly maps of 7 days averaged at 1-km are available for 2019.

Use: study the seasonal variability of the sargassum presence in the Tropical Atlantic from Gulf of Guinea to Gulf of Mexico. Identify areas affected by Sargassum events and localize sargassum rafts.

Condition of access: these products are delivered for any purposes as stated in the licence agreement

Description: 
- Daily gridded products provided in near-real-time since February 2022 to amonth before current date, made available as part of SeSaM SCO project (https://www.spaceclimateobservatory.org/sesam). Each map represents the sargassum presence at 300m (high) or 1km (low) resolution.
- Weekly gridded products provided in delayed time for the year 2019 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.

Citation: when using the Floating Algae Index using Sentinel-3 satellites product, please cite
For the 2019 reanalysis data:
“The Floating sargassum algae detection product has been produced by CLS in the frame of the European project e-shape https://e-shape.eu/ , distributed by Aviso+ (DOI 10.24400/527896/a01-2022.007).”

For the datasets starting in February 2022:
“The Sargassum Floating algae detection product has been produced by CLS operationally in the frame of the SAMTool service. The product is distributed by Aviso+ (DOI 10.24400/527896/a01-2022.007) with support from SCO-CNES.”

Geographic coverage: Tropical Atlantic from -5°S to 30°N, 100°W to 15°E

Format: NetCDF-4 Classic with CF standards.

Tools:

Copyright : 2019, 2022 - ongoing, Cls

Floating Sargassum Algae detection - OLCI in Delayed-time

Product Satellite DOI Authenticated access service  Frequency Data period Dataset name
Sargassum detection - Floating Algae Index - OLCI OLCI instruments on Sentinel-3A and Sentinel-3B 10.24400/527896/a01-2022.007 see your MY AVISO+ - From 2018/12/26 to 2019/12/31 dataset-sargassum-merged-olci-7day-average-reanalysis-lr

Floating Sargassum Algae detection - OLCI in Near-real-time (1 month delay)

Product Satellite DOI Authenticated access service  Frequency Data period Resolution Dataset name
Sargassum detection - Floating Algae Index - OLCI OLCI instruments on Sentinel-3A and Sentinel-3B 10.24400/527896/a01-2022.007 see your MY AVISO+ daily Feb 2022 - 1 month delay LR (1km) dataset-sargassum-cls-olci-s3-global-lr
HR (300m) dataset-sargassum-cls-olci-s3-global-hr
EnglishFrançais
Rss feedsContactPartnersFAQLexiconLegal noticePersonal Data Protection PolicyMobile
You must enable cookies in your browser preferences to save the modifications
You are using an older version of Internet Explorer, please update to take full advantage of Aviso+ features

Customize the home page

View all widgets
Reduce display
Public profile
User profile

Select/Deselect widgets

Discover AVISO+

Customizable home, reading tools, products search guide, etc.. Discover step by step the features of the new site AVISO+.

Customizable homepage

This home page is composed of blocks called "widgets".

Rearrange the blocks with a "Click & Drop".

Hide a widget with the cross at the top right. Reset or add a widget with the "wrench" icon. The "User" and "Public" profiles offer a predefined organization.

All the modifications are automatically saved as cookies on your machine so as to enable you to have your own specific AVISO+.

Reading tools

Ease your reading by choosing the page background colour (black/white) and/or by modifying the font size.

Browsing menu and breadcrum trail

To ease your browsing through AVISO+, you can use at any time the main banner items with the interactive submenus or use the browsing menu on the left side of the screen (it is open by default). For more readiness of the page contents, you can fold and unfold the browsing menu by clicking on the tab. At any time you can know where you are thanks to the browsing menu or the breadcrum at the top of the page.

Products search guide

The first submenu of the "Data" banner item leads you to a new search form enabling you to find quickier the product that suits your needs. The list of results is updated according to your selection criteria.

AVISO+ Multimedia

The first submenu of the "Multimedia" banner item leads you to AVISO+ collections of images and videos linked to altimetry and its applications. Have a nice visit!