Climate Characteristics of Grape Product Regions

Climate Characteristics for Vitis vinifera Production Regions in Canada: 1965-2019
Carl Bogdanoff, Pat Bowen, and Brad Estergaard, Summerland Research & Development Centre, Agriculture & Agri-Food Canada
The success of the grape and wine industries in British Columbia and Ontario is largely due to the production of premium quality wines made from noble Vitis vinifera cultivars such as Chardonnay, Merlot and Pinot noir. This has spurred efforts to expand the Canadian wine industry into new regions, but climate is the main constraint on acreage expansion. Historical weather data can be used to assess climatic suitability for grape growing. Using data from Environment Canada (https://weather.gc.ca/), we produced summaries of the historical climate characteristics for a selection of Canadian V. vinifera growing locations: Osoyoos, Summerland, Abbotsford and Duncan (BC), Vineland (ON), and Kentville (NS). The summary statistics and indices derived from the data include growing degree days (GDD, base 10 °C), consecutive frost free days (FFD), annual minimum temperature, and daily record low temperature for periods spanning several decades (download the full report below).

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