The CHLO4MSFD portal makes part of the Copernicus Marine Environment Monitoring Services (CMEMS). It will help you find, view and download chlorophyll-a data from satellites to support EU marine water quality assessments.



Areas of Benefit: Coastal and marine environment.


Regions: Baltic Sea, European North-west Shelf Seas, Iberian-Biscay-Irish Regional Seas, Mediterranean Sea, Black Sea.


Credits: Generated using E.U. Copernicus Marine Service Information.

The CHLO4MSFD service will deliver chlorophyll-a data from satellites to support the Marine Strategy Framework Directive (MSFD 2008/56/EC) across EU marine waters.

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The data delivered through the portal will be primarily based on products provided by Copernicus Marine Service, although products from alternative providers will also be delivered if considered useful to support Marine Strategy Framework Directive (MSFD).

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Within the recent Commission Decision 2017/848 from the Marine Strategy Framework Directive (MSFD), chlorophyll-a is considered as a primary criterion (D5C2) of Descriptor 5 about eutrophication and should be used to ensure consistency across the Union.

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Survey: your opinion on CHLO4MSFD products

A few months ago we conducted a survey to know your preferences on satellite-derived chlorophyll-a data and products. We really appreciate your participation and we are sharing the results in this post.

The recent MSFD Commission Decision (EU) 2017/848.

The recent MSFD Commission Decision (EU) 2017/848 of 17 May 2017 lays down criteria and methodological standards on good environmental status of marine waters, and specifications and standardised methods for monitoring and assessment.