Morganti et al. (2025): Monitoring marine carbon dioxide removal: quantitative analysis of indicators for carbon removed and environmental side-effects
Teresa Maria Morganti, Wanxuan Yao, Nadine Mengis, Andreas Oschlies and Gregor Rehder, IN: Environmental Research Letters, https://doi.org/10.1088/1748-9326/ae1c54
Marine Carbon Dioxide Removal (mCDR) implementations can potentially remove 1–15 Gt CO₂ yr⁻¹, which encompasses the minimum requirement removal of CDR in 2050 to limit warming below 2 °C by 2100. Despite their potential, mCDR represents only a tiny fraction of currently deployed CDR methods. Their implementations require not only a comprehensive understanding of the marine processes involved, but also a robust monitoring for their effectiveness and potential environmental impacts. In this work, the authors surveyed the mCDR scientific literature to identify measurable indicators for quantitative information across different ecosystems and methods used for monitoring the carbon removed and environmental side-effects, and explored the main common challenges.