Assessing Impacts of Climate Change on Phenology and Quality Traits of <i>Vitis vinifera</i> L.: The Contribution of Local Knowledge.

Climate analysis showed a trend toward rising temperatures during the summer, as demonstrated by the number of days with daily maximum air temperature (Tmax) exceeding 30 °C ( Figure 5 a), together with a linear decrease in the number of days with daily minimum temperature (Tmin) equal or below to 0 °C.

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sauvignon, belonging to the first cluster (‘warm climate-maturity’; optimum GST, 17–19 °C), exhibited a clear trend to postponement of the harvest date and reduction of TSS.

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TA and pH of berry juice at harvest were influenced by thermal regime, expressed by the WI, HI (data not shown), and by the number of days with Tmax > 30 °C, showing a decreasing trend ( Figure 7 a).

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The Cool night Index (CI) outlined an increasing trend in the average Tmin in early autumn ( Figure 5 b).

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