Welcome to the Marine Meteorology Centre 
("Centre de Météorologie Marine", CMM)

Contact : mailto:cmm_op@meteo.fr

Latest update : 18/06/2019

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The CMM is a unit of the Department of Observation Systems ("Direction des Systèmes d'Observation", DSO) of Météo-France.

The centre is located in Brest and hosted by the SHOM.


The core activity of CMM is marine instrumentation. This includes the procurement or development of stations and sensors, their qualification before deployment (organising calibration, metadata management), their implementation at sea, their maintenance in operational condition, and the collection of the resulting observation data and their qualification (quality control).

The activities of CMM serve the following:

*        operational needs of Météo-France and E-SURFMAR (Surface Marine Operational Service of EUMETNET, grouping of European National Meteorological Services, including Météo-France);

*        operational needs of CORIOLIS (grouping of French institutes involved in operational oceanography: CNES, INSU of CNRS, IFREMER, IPEV, IRD, Météo-France, and SHOM);

*        research needs in marine meteorology (e.g., HYMEX).


Marine activities

                 Moored buoys

Météo-France maintains in operational conditions:

    • two buoys in the Atlantic in cooperation with the UK Met Office: BRITTANY (WMO identifier: 6200163) located 300 km away from Brittany, and GASCOGNE (WMO identifier: 6200001) located 300 km West of the Arcachon Bay;
    • two buoys in the Mediterranean: COTE D'AZUR (WMO identifier: 6100001) located 50 km South-East of Nice, and LION (WMO identifier: 6100002) in the Gulf of Lion, 150 km South of Marseilles;
    • one buoy in the West Indies: ANTILLES (WMO identifier: 4100300), 500 km East of Guadeloupe and Martinique.
Moored buoy

Near real time data access is available from this link.

N.B.: Moored buoys in the Mediterranean also host sensors for research activities.

A diver alongside the mooring line

In addition, Météo-France contributes to the maintenance in operational conditions of the tropical moored buoy arrays PIRATA (Atlantic Ocean) and RAMA (Indian Ocean):


Météo-France expands its own waveriders (AXYS) network. The fist two were deployed in Guadeloupe :

    • Port du Moule (WMOId = 4100135)
    • Côte Caraïbes  (WMOId= 4100136)
These buoys provide sea state in coastal waters (significant wave height, period) and directional frequency energy spectrum.

Houlographe AXYS

                 Drifting buoys

Drifting buoy

The CMM organizes the deployment of drifters for various entities: Météo-France in the Tropical North Atlantic, international partners of the International Buoy Programme for the Indian Ocean (IBPIO), E-SURFMAR in the North Atlantic, but also Arctic and South Atlantic (AtlantOS).


The position and trajectories of the buoys can be visualised using this link




The CMM also deploys drifters on demand, for research needs. These can be SVP drifters (picture) for research campaigns.


For E-SURFMAR, the CMM has developed :

a European S-AWS (called EUCAWS) according to specifications common to several European National Meteorological Services members of EUMETNET.



Data and metadata


The CMM is involved in defining and organising the operational data management of surface marine observations. As a network operator of observing systems, the CMM aims to maintain the highest possible quality for the data served.

                Data Formats

With its international partners, the CMM contributes to the continued evolution of the data formats employed for international data exchange. These standardised formats include transmission from sea platforms (via various satellite telecommunication operators) but also exchange between national meteorological services.


                Data quality control


The website QCTools provides data quality control tools. User can search platforms at sea (moored buoy, drifter, ship) for the past 15 days.


The website also provides lists of suspicious platforms, as well as monitoring statistics.





The website offers other functionalities. Please get in touch with us if needed, we appreciate feedback.


                Metadata databases


The CMM collects and maintains up-to-date metadata for all the platforms and sensors that it manages directly.



Contributions to international programmes


The actions of CMM are within the remit of the Data Buoy Cooperation Panel (DBCP) and the Ship Observations Team (SOT). They contribute to international programmes coordinated by the WMO-IOC Joint Technical Commission for Oceanography and Marine Meteorology (JCOMM). WMO is the World Meteorological Organisation and IOC the Intergovernmental Oceanographic Commission of UNESCO.


Within the DBCP, the CMM coordinates two action groups:


o    IBPIO.



The CMM maintains the following websites:

o    E-SURFMAR  private

o    E-SURFMAR internet

o    IBPIO internet.