The Euro-Argo array is the European component of a world wide in situ global ocean observing system, based on autonomous profiling floats. The Argo objective is to develop a global array of floats (spaced 300 km apart, on average) throughout the ice-free areas of the deep ocean.

It is estimated that some 3,000 floats are required to reach this objective. The floats are battery powered, with a design life of between 3/4 to 5 years, i.e. about 800 floats must be deployed per year to maintain the target array.

The data are transmitted in real time by satellite to data centres for processing, management, and distribution. The Euro-Argo objective is to provide a sustained European contribution to the international Argo programme.

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