Assessing global macroalgal carbon dioxide removal potential using a high-resolution ocean biogeochemistry model

Manon Berger, Laurent Bopp, David T. Ho, Lester Kwiatkowski IN: EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-4699,, 2022

…to be discussed at the EGU conference (Vienna, Austria & Online, 23–27 May 2022): „Here we simulate idealized global deployment of macroalgae-based CDR using the NEMO-PISCESv2 ocean biogeochemical model at high spatial resolution (0.25° nominal horizontal resolution). Macroalgae growth is confined to the upper 100m of the water column in Exclusive Economic Zones (EEZ) free of sea ice and with an appropriate nitrate/phosphate regime. Although the loss of dissolved inorganic carbon (DIC) through macroalgal growth enhances the flux of atmospheric carbon into the ocean, this increase in carbon uptake is less than the rate of macroalgal production.“