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The Heat is On for Napa Valley Wines

Temperatures are rising for Napa Valley grapes. (Photo: KQED Quest.)

California’s prime wine producing areas could shrink dramatically over the next three decades of climate change. That’s according to a study released this week by scientists at Stanford University.

Author Noah Diffenbaugh and colleagues looked at how Napa and Santa Barbara counties could be affected by a one-degree Celsius (1.8 degrees Fahrenheit) rise in average global temperature. They found that the land suitable for growing premium wine grapes could be reduced 30-50% by 2040. Continue reading