Study Explores Effect of Increasing Temperatures on Wine-Grape Quality

Collaborative research out of the University of California, Davis, and University of Bordeaux, studied the effect of increasing temperatures on the quality of wine grapes in the Napa Valley and Bordeaux, France. As temperatures exceeded what was considered the optimal level for quality, the grapes produced better wines; however, there was a point where high temperatures degraded the grape skin and color enough to reduce wine quality. Researchers anticipate that increasing temperatures from climate change are likely to lead to shifts in wine-growing regions as some areas become too hot but other areas become suitable for wine-grape growing.