Editorial: the role of ocean-based negative emission technologies for climate mitigation

Mitigating climate change is a massive challenge. Atmospheric carbon dioxide removal (CDR) with negative emission technologies (NETs) is now widely considered a necessary additional action since traditional mitigation measures, such as limiting the use of fossil fuels, have had limited success (Intergovernmental Panel on Climate Change, 2018, United Nations Environment Programme, 2020). Until now, the majority of NETs research and development has focused on land-based options such as bioenergy with carbon capture and storage (BECCS). However, ocean-based NETs can potentially also play a significant CDR role.