• Catalogue PIGMA
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Sargassum Floating Algae Index Detection - Sentinel-3A&B, MODIS Aqua

Composite maps of sargassum detection index NFAI (Normalized Floating Algae Index).

Daily gridded products provided in delayed time from February 2022 to a month before current date, made available as part of SeSaM SCO project (https://www.spaceclimateobservatory.org/sesam). Each map represents the sargassum presence (through normalized floatting alguae index) of the last 7 days at 0.01° resolution.

Simple

Date (Creation)
2025-01-13
Date (Publication)
2025-02-17
Identifier
a01-2024.014 / v1.0
Credit
AVISO+
Status
onGoing On going
Point of contact
  AVISO
Distributor
  CDS-AVISO
funder
  CNES
Originator
  CLS
Centre de données ODATIS
  • CDS-AVISO
Type de jeux de donnée ODATIS
  • /Observational data/satellite
ODATIS aggregation parameters and Essential Variable names
  • Macroalgal
Processing level
  • Level 4
Cersat - GCMD parameter
  • /Ocean Optics/Reflectance
Use limitation
Licence ouverte
Access constraints
License
Use constraints
Other restrictions
Other constraints
Open Licence
Other constraints
This 7-day average of Sargassum Floating Algae Detection product using Sentinel-3A&B and AQUA satellites is produced by CLSand distributed by AVISO with the support of CNES SCO SCO SeSaM project. Collecte Localisation Satellite (CLS). (2025). Composite Maps of sargassum Floating Algae Index NFAI (Normalized Floating Algae Index) using OLCI instruments onboard Sentinel-3A and B and MODIS sensor onboard AQUA [Dataset]. CNES. https://doi.org/10.24400/527896/A01-2024.014
Unique resource identifier
10.1109/tgrs.2006.882258
Association Type
Cross reference
Initiative Type
Study
Unique resource identifier
10.1016/j.rse.2009.05.012
Association Type
Cross reference
Initiative Type
Study
Unique resource identifier
10.1016/j.rse.2016.04.019
Association Type
Cross reference
Initiative Type
Study
Spatial representation type
grid Grid
Distance
0.01  degree
Metadata language
Français
Character set
utf8 UTF8
Topic category
  • Oceans
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S
E
W
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Begin date
2022-02-22
Reference system identifier
http://www.opengis.net/def/crs/EPSG/0/4326
Geometric object type
Complex
Distribution format
  • NetCDF ( )

OnLine resource
AVISO THREDDS Data Server ( WWW:DOWNLOAD )

Sargassum Floating Algae Index Detection - Sentinel-3A&B, MODIS Aqua

OnLine resource
User guide ( WWW:DOWNLOAD )

Handbook

OnLine resource

No information provided.

OnLine resource

No information provided.

OnLine resource

No information provided.

OnLine resource

No information provided.
OnLine resource
nfai_max ( OGC:WMS )
OnLine resource
Digital Object Identifier (DOI) ( DOI )
Hierarchy level
Dataset
Description
Creation of the dataset
Date / Time
V1.0 2025-01-22
Hierarchy level
Dataset
Processing level code
L4
File identifier
acc235d1-ae89-454d-802e-88e55529d4d4 XML
Metadata language
Français
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2026-10-21T08:24:40.804895Z
Metadata standard name
ISO 19115-3:2018 - Remote Sensing ISO 19115-3:2018 - Remote Sensing
Metadata standard version
1.0
 
 

Overviews

overview
Average detections of MODIS and OLCI of the last 7 days for May 4th 2024. Sargassum mats are shown in blue, cloud and land are shown in grey. Credits CLS.

Spatial extent

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S
E
W
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Keywords

Centre de données ODATIS
CDS-AVISO
Cersat - GCMD parameter
/Ocean Optics/Reflectance
ODATIS aggregation parameters and Essential Variable names
Macroalgal
Type de jeux de donnée ODATIS
/Observational data/satellite

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Associated resources

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