Météo France: anchored and derivative buoys, in the heart of the marine forecast

Weather stations, satellites, radars … Nevertheless, and buoys. Nevertheless, For Météo France forecasters and for meteorologists around the world, sources of information are multiple. In addition, They continuously analyze the observation data from these instruments. Similarly. Furthermore. For example. météo france: anchored derivative buoys, new However, and confront them météo france: anchored derivative buoys, new with the models of forecasts which simulate the evolution of the atmosphere, from millions of data and complex physical equations. In addition. In addition. Therefore,

“The big advantage météo france: anchored derivative buoys, new of buoys compared to other devices is that it provides in situ. Moreover. For example. Furthermore. However, direct and météo france: anchored derivative buoys, continuous data, which in particular validate or correct the measures of the satellites,” Marine Guillerm, director of the Marine Meteorology Center in Brest. Consequently, This is where the buoys deployed by Météo France are stored, prepared and repaired, from the largest (7.50 meters high) to the smallest (40 cm in diameter).

From two to seven buoys anchored in the Mediterranean – Météo france: anchored derivative buoys. In addition, – Météo france: anchored derivative buoys, new

As summer approaches. Nevertheless, the most massive are the météo france: anchored derivative buoys, new object of all attentions, especially the buoys intended for the Mediterranean Sea. For example, météo france: anchored derivative buoys, new Similarly, In the heart of the summer of 2022. Consequently. Consequently. For example. Consequently, in Corsica, an extremely violent thunderstorm accompanied by winds at more than 200 km/h had caused the death of five people and made around twenty injured. However. Furthermore. However, He had then been criticized météo france: anchored derivative buoys, new for Météo France for not having given the alert early enough. Furthermore, of having poorly anticipated his violence. Additionally, Furthermore. Nevertheless. The organization had recognized that “the very exceptional intensity of météo france: anchored derivative buoys. the event” could not be planned. In addition, Additionally, Furthermore, “due to the lack of observations at sea”.

At the time, only two anchored buoys were deployed in the Mediterranean. Consequently, Bouées capable of measuring atmospheric pressure. Meanwhile. météo france: anchored derivative buoys, new air temperature, humidity, wind strength, swell, temperature and water conductivity, and transmit this data by satellite every hour. After the tragic Corsican event. “Météo France decided to deploy five additional buoys to better anticipate these extreme phenomena”. in one of the regions of the world most exposed to climate change. which amplifies these météo france: anchored derivative buoys, new phenomena. Ultimately. ten buoys will be anchored in the Mediterranean. in the Gulf of Gascogne and in the Antilles, and three “spare” will be ready to replace them.

Interventions one more

This increase in the number of buoys was météo france: anchored derivative buoys. accompanied by a change of model: “The main drawback of historical buoys is that they must be brought back. to the météo france: anchored derivative buoys, new ground to make the slightest change of sensor”. underlines Christophe Guillerm. In the new model. rotated. recyclable plastic. made in Lot-et-Garonne by the mobilis company. “there is nothing météo france: anchored derivative buoys, new in the body of the buoy: battery, electronics and sensors are centralized in the superstructure. We can now intervene element by element. at sea, after transferring the buoy to the bridge of a ship for more security ”.

For the assembly of buoys météo france: anchored derivative buoys, new deployed in the Mediterranean. “the superstructure is received. mounted in Brest. where we integrate all the sensors. electronics, while the floats and the keel are delivered to the headlights and beacons in Marseille”. The set is assembled on météo france: anchored derivative buoys. site, and the Provence baller is responsible for météo france: anchored derivative buoys, new deployment. With a weight of 3.25 tonnes for 7.50 m high and 3.60 in diameter for the float. each structure is hung at the bottom by a line of polypropylene. polyamide mooring, with météo france: anchored derivative buoys, new a maximum length of 6000 meters.

The superstructure. in which it is possible to stand up. which can be around. contains the sensors that measure atmospheric pressure, wind, air temperature and humidity, as well as GPS, Bluetooth and Iridium antennas. “By default. they transmit their météo france: anchored derivative buoys, new data every hour. but it is possible to switch to turbo mode to send specific data every 6 minutes to improve forecast.” Solar panels feed the battery, which feeds the system. This can work for three months without sun. These météo france: anchored derivative buoys, new new météo france: anchored derivative buoys, buoys, at 350,000 euros per unit, are planned to last 20 years.

Météo france: anchored derivative buoys. new

Météo france: anchored derivative buoys, météo france: anchored derivative buoys, new new

Météo france: anchored derivative buoys. new

The derivative buoys deployed by opportunity ships

Much less impressive but just as useful. the derivative buoys of Météo France. of an average lifespan of two years, weigh 22 kg for a diameter of 40 cm and are designed in plastic. “50 to 80 are deployed each year, to constantly have 150 at sea. They first pass around here. then we send them. around the world. to opportunity boats, Météo France météo france: anchored derivative buoys, new not having a ship”.

CMA CGM. Grain de Sail. the French Navy. skippers in Imoca engaged in the météo france: anchored derivative buoys, new Vendée Globe regularly drop buoys on behalf of Météo France. and individuals can also participate, “as long as they deploy a buoy in an area that interests us”. In any case. météo france: anchored derivative buoys. “we give a position where we would like the buoy to be launched at météo france: anchored derivative buoys. new sea, safely. The crew throws it into the water and then sends us a message specifying the position. We then activate the transmission of the data, by the Iridium satellite network, and we receive it every hour. ”

These buoys SVP-B (for barometer) make it possible to measure the temperature of seawater. to calibrate the satellites which measure the surface temperature of the sea. to provide pressure data, which can only be measured in situ. Indispensable for the evaluation of depression, it météo france: anchored derivative buoys, new is “hyper important for models”. The transmission météo france: anchored derivative buoys, new of the position of the buoys also makes it possible to deduce the currents. With a floating anchor of 50 meters, they follow the water column, regardless of the wind.

Eco -responsible prototypes

To meet the growing needs of the weather. climatic forecast. Météo France participates in the E-surfmar météo france: anchored derivative buoys. program as part of météo france: anchored derivative buoys, new the EUMETNET European network. In Brest. the team at the Marine Meteorology Center works on two more virtuous derivative buoys on the ecological level (many. are lost. deteriorate at sea). in partnership with Kinéis. a subsidiary of CLS (satellite location collection), specialist in the location of connected objects and the transmission of data in almost real time.

The first prototype consists of a wood made rot -by by injection of météo météo france: anchored derivative buoys, new france: anchored derivative buoys. new acid. and may ultimately contain the classic sensors and antennas of a derivative buoy. Its plans will be accessible in open source. The second. developed by the Kaïros company of the navigator Roland Jourdain. is designed in biosourced plastic.. will be the subject of tests and mechanical tests, such as resistance to droping for an airplane, météo france: anchored derivative buoys, new météo france: anchored derivative buoys, for two years. “Our goal is to replace the old buoys with these new models,” says Christophe Guillerm. “And to use French Kinéis rather than the American iridium to transmit the data”.

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