Sampling macro-areas and temperature trends in the Verona region, Veneto, Italy. (a) Sampling locations of Vitis vinifera cv Corvina clone 48 berries near Verona, Italy. We chose 11 different vineyards from the three most important wine production macro-areas of the region: Bardolino, Valpolicella, and Soave. (b) Average annual temperature trends. Temperature measurements were averaged from three recording stations located near each macro-area. The start and end point of sampling are indicated for each year.