Tiwary et al. (2026): Simulated Earth system response to acid downwelling as a form of ocean alkalinity enhancement
E Tiwary, M Jürchott and A Oschlies, IN: Environmental Research Letters, https://doi.org/10.1088/1748-9326/ae2105
‘Acid downwelling’ (AD) is a proposed marine carbon dioxide removal (CDR) method, which describes the idea of electrochemically splitting open ocean surface water into an alkaline solution to remain at the surface ocean and cause additional ocean CO₂ uptake, and into an acidic solution that is pumped down into the deep ocean for disposal via vertical pipes. In this study, the authors simulate idealized large-scale AD in an Earth system model of intermediate complexity with different acid injection depths and downwelling intensities.