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Meteorological Based Modeling of δ 18O Values for Wines with the “Prosecco” Controlled Designation of Origin
American Journal of Enology and Viticulture ( IF 2.630 ) Pub Date : 2020-03-13 , DOI: 10.5344/ajev.2020.19050
Monica Bononi , Fernando Tateo , Osvaldo Failla , Luigi Mariani , Giancarlo Quaglia

Weather data from the Prosecco area were used to apply a proposed model for estimating δ18O values in wine (HV; Hermann and Voerkelius 2008) and to determine the spatio-temporal variability of these values. Eleven reference stations provided meteorological data from 1973 to 2017. The model revealed interannual and spatial variability similar to that observed for other grape varieties or viticultural areas, and we highlight the need for more careful consideration of meteorological factors in causing variation in δ18O values. Meteorological modeling of isotopic values can help constrain sampling procedures aimed at collecting representative data from different Prosecco production areas and estimating δ18O ranges for each year in the “Prosecco” region. Estimated values revealed a significant degree of temporal variability across the 11 sites and, consequently, across years. δ18O values for 36 bottled “Prosecco” wines collected from 2012 to 2017 were compared with the range defined by the HV model for each corresponding year, with good data consistency.

中文翻译:

具有“Prosecco”受控原产地名称的葡萄酒的 δ 18O 值的基于气象学的建模

来自 Prosecco 地区的天气数据用于应用建议的模型来估计葡萄酒中的 δ18O 值(HV;Hermann 和 Voerkelius 2008)并确定这些值的时空变异性。11 个参考站提供了 1973 年至 2017 年的气象数据。该模型揭示了与观察到的其他葡萄品种或葡萄栽培区相似的年际和空间变化,我们强调需要更仔细地考虑导致 δ18O 值变化的气象因素。同位素值的气象建模有助于限制旨在从不同普罗塞克产区收集代表性数据并估计“普罗塞克”地区每年 δ18O 范围的采样程序。估计值揭示了 11 个地点的显着时间可变性,并且,因此,跨年。将 2012 年至 2017 年收集的 36 瓶“普罗赛克”葡萄酒的 δ18O 值与相应年份的 HV 模型定义的范围进行了比较,具有良好的数据一致性。
更新日期:2020-03-13
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