Fig. 3.

Correlations between grape quality attributes (TA, pH and anthocyanin concentrations) at common maturity (22 °Brix TSS) and climate variables for Cabernet Sauvignon, Shiraz and Chardonnay. Months are denoted by their initial three letters. Tmn Minimum temperature; Tav average temperature; Tmx maximum temperatures; RP ripening period; DR diurnal range; D25, D30 number of days with maximum temperature over 25 °C or 30 °C; H25, H30 number of hours over 25 °C or 30 °C; Evp Class A pan evaporation; VPD vapour pressure deficit; Rad net radiation; AWC available soil water holding capacity; Rn_SN, Rn_GS rainfall during September to November or during growing season, respectively