This paper considers the practicalities, opportunities and threats associated with one of the earliest proposed carbon-removal techniques: large-scale ocean fertilization, achieved by adding iron or other nutrients to surface waters. The intention is to enhance microscopic marine plant growth, on a scale large enough not only to significantly increase the uptake of atmospheric carbon by the ocean, but also to remove it from the atmosphere for long enough to provide global climatic benefit.
Download file: ENG
Organization: UNESCO, Intergovernmental Oceanographic Commission
Topics: Mitigation, COP22 List of UN Publications
Type of material: Analytical-Technical Document
Publication date: 2014