Consensus: IPCC says that global warming would likely increase North American crop yields 5 to 20%

- Bishop Hill blog - More Climate Change Committee

Remember this? These were some of the impacts expected for various degrees of global warming as described in the Climate Change Committee's report.

AR4 WGII Chapter 14: North America - 14.4.4 Agriculture, forestry and fisheries

Research since the TAR supports the conclusion that moderate climate change will likely increase yields of North American rain-fed agriculture, but with smaller increases and more spatial variability than in earlier estimates (high confidence) (Reilly, 2002). Most studies project likely climate-related yield increases of 5 to 20% over the first decades of the century, with the overall positive effects of climate persisting through much or all of the 21st century.