A research team at Stanford University, led by Dr. Julia Pongratz, finds that solar-radiation geoengineering in a high-CO2 climate generally causes crop yields to increase, largely because temperature stresses are diminished while the benefits of CO2 fertilization are retained.
The team adds that, nevertheless, possible yield losses on the local scale as well as known and unknown side effects and risks associated with geoengineering indicate that the most certain way to reduce climate risks to global food security is to reduce emissions of greenhouse gases.
Paper: Crop yields in a geoengineered climate
Press release: Geoengineering and global food supply
