Main advances in the study of coastal carbon fluxes and biogeochemical cycling (JRAP#5)

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Jrap#5 has been preparing for intensive period starting March 2017. The observation plan will be detailed in December 2016 – January 2017.

At FMI/SYKE, new instruments have been tested for continuous pH and pCO2 measurements. In addition, methods for analyzing DIC and alkalinity from discrete water samples have been taken into use.

Super_CO2eq_JRAP#5

Figure: development of new showerhead pCO2-equilibrator at Utö, Finland.

Bouée JRAP#5

Figure: observation platform on the Cretan Sea

In the Cretan Sea (Eastern Mediterranean), a pH sensor (sensorlab) was deployed by HCMR in collaboration with IOCAG (M. González Dávila) in July 2016, at the location of the POSEIDON E1-M3A buoy, allowing continuous pH measurements transmitted every 3 hours. In addition, discrete water samples have been taken at monthly frequency next to the pH sensor, for analyzing DIC and alkalinity.

The intercomparison of the different instruments used by Jerico-next partners is planned to take place in 2018, after the completion of the intensive period.