Measurements of pCO2 from an autonomous drifting buoy in 2019 during FALKOR cruise FK191120, station 20


Data from autonomous, drifting buoy with a floating chamber to measure insitu air-sea carbon dioxide (CO2) fluxes during RV Falkor cruise FK191120 in the southern Pacific during November-December 2019. The technique is described in detail in Ribas-Ribas et al. (2018) ( The buoy is equipped with a sensor to measure aqueous and atmospheric partial pressure of CO2 (pCO2), and to monitor the increase or loss of CO2 inside the chamber. One complete cycle including two chamber measurements last 70 minutes. The buoy can be deployed for more than 15 hours, and at wind speeds of up to 10 m/s. Floating chambers are known to overestimate fluxes due to the creation of additional turbulence at the water surface. We check that by measuring turbulence with two Acoustic Doppler Velocimeter (ADV), one directly underneath the center of the floating chamber (equipped with an inertial motion unit) and the other one positioned sideways to measure turbulence outside the perimeter of the buoy.

GPS and CO2 data

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Metadata Access
Creator Ribas-Ribas, Mariana ORCID logo; Wurl, Oliver ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference Deutsche Forschungsgemeinschaft, Bonn Crossref Funder ID 427614800
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 906 data points
Discipline Earth System Research
Spatial Coverage (177.760W, -16.133S, 177.770E, -16.086N); South Pacific Ocean
Temporal Coverage Begin 2019-12-11T21:57:00Z
Temporal Coverage End 2019-12-12T02:58:00Z