Table 4 Categories of geoengineering proposals, based on IPCC ( [2013] )
From: Modeling in Earth system science up to and beyond IPCC AR5
Category | Proposal |
|---|---|
CDR | Afforestation and reforestation |
| Â | Bioenergy with carbon capture and storage (BECCS) |
| Â | Biochar creation and storage in soils |
| Â | Ocean fertilization by adding nutrients to surface waters |
| Â | Ocean-enhanced upwelling, bringing more nutrients to surface waters |
| Â | Land-based increased weathering |
| Â | Ocean-based increased weathering |
| Â | Direct air capture (engineering method) |
SRM | Space-based methods |
Stratospheric aerosol injection | |
Cloud brightening | |
Surface albedo changes |