Reflecting sun’s rays would cause crops to fail, scientists warn
Proposals to combat climate change by reflecting the sun’s rays back into space would cause widespread crop failure, cancelling out any benefits to farming from the reduction in warming, according to new research.
By examining the effects of volcanic eruptions on agriculture – which has a similar effect to proposed artificial methods of scattering solar radiation through aerosols – scientists have concluded that such methods could have unintended consequences.
“[The research was to] find a way to examine the side effects of geoengineering without experimenting on the climate,” said Jonathan Proctor of University of California, Berkeley, lead author of the paper published in the peer review journal Nature. “[We found] potential adverse effect on agricultural production.”
But he said there could be other positive effects that were less easy to capture.