image: Estimated net impact of climate trends for 1980-2008 on crop yields by country, divided by the overall yield trend per year for 1980-2008. Values represent the climate effect in the equivalent number of years of overall yield gains. Negative (positive) values indicate that the climate trend slowed (sped up) yield trends relative to what would have occurred without trends in climate. For more information, please see Figure 4 in the manuscript. This image relates to an article that appeared in the May 5, 2011, issue of Science Express, published by AAAS. The study, by David Lobell of Stanford University in Stanford, Calif., and colleagues, was titled, "Climate Trends and Global Crop Production Since 1980." view more
Credit: [Image courtesy of <i>Science</i>/AAAS]