nke Instrumentation

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CARIOCA is an automated drifting buoy that measures the partial pressure of dissolved CO2 in seawater in order to quantify air/ocean exchanges. pCO2 is measured in liquid phase by colorimetry on a reagent using a 3-wavelength spectrophotometer with a 4 µatm accuracy. The buoy is autonomous, data are sent via the ARGOS satellite system, which also controls the positioning. The buoy's autonomy is one year based on an hourly measurement rate. Measuring campaigns have been carried out in the Mediterranean, Greenland Sea, Equatorial Pacific and the Antarctic. The CARIOCA project is part of the EUREKA EU 819 programme.

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