Summary/Abstract
This paper presents gaps and challenges in the existing governance framework for ocean-based negative emissions technologies (ONETs), as well as needs and opportunities for comprehensive governance of the technologies. A range of potential trade-offs with other policy goals may need to be considered or dealt with when deploying ONETs for climate mitigation. Further, foresight-oriented and adaptive governance mechanisms appear imperative to bridge gaps resulting from extensive uncertainties and unknowns linked to ONET deployment in a changing ocean.