“Karen, I enjoyed reading your eiswein column [WineSpeed 12/7/2018]. I also wondered how climate change is affecting icewines made in Canada?” —Dr. Wilf K. (Vancouver Island, Canada)

Wilf—We asked wine-expert Dr. Tony Shaw from Brock University in Ontario for his thoughts. He responded, “Canada’s reputation for icewine rests on the relative certainty of its cold winters. However, in recent decades, the temperatures required for icewine are occurring less frequently and often later in the winter. Temperature variability is a characteristic feature of Canada’s climate, and for that matter, the greater part of the North American continent. However, human-induced climate change along with relatively mild recent temperatures have added to uncertainty and a downward trend in the critical picking temperatures.” Uncertainty—that’s a worrisome word.

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