The animation shows fCO2 differences between ocean and atmosphere versus time of the year. Blue colors indicate uptake of CO2 by the ocean while red colors indicate CO2 outgassing from the ocean. All SOCAT-v3 data with quality flags A to D are used. More than 68 % of the values are from the 2005 - 2012 period.
fCO2 in air was calculated from Global View Marine Boundary Layer CO2 values provided in the SOCAT-v3 dataset using procedures described in Pierrot et al., Deep Sea Research Part II, 56, 512-522, 2009.