In a Warming World, Winemakers Search for Cooler Ground

Aided by science honed over the past 150 years, winemakers across Northern California’s famed Sonoma appellations are starting to take climate change more seriously. How they adapt could revolutionize the wine industry in regions across the globe for the next century.

Welcome to Petaluma Gap, California’s newest viticultural area, where cool fog and soft wind define great wine-making.

Chardonnay Harvest in “The Gap” —Nestled in the southern corner of the Sonoma Coast region, winemakers view Petaluma Gap as a sanctuary, where cooler temperatures and steady winds promote sustainable and prosperous wine production. Just next door, in Napa, grapes are ripening weeks ahead of schedule due to rising temperatures, causing alarm throughout the industry. Photo by Frances Rivetti