Climate change can significantly affect wine quality, but its effects are not the same across all varieties. This is the focus of the study Climate and the quality of wine: Whites vs. reds, published in Open Access in the Journal of Cleaner Production and conducted by a UniTS research group.

The study is authored by Giovanni Millo, Paolo Bogoni, Barbara Campisi, Matteo Carzedda, Gianluigi Gallenti, Valentino Riva and Gaetano Carmeci. The work is part of the project “Climate change and sustainability of viticulture in the Collio Goriziano area”, launched within the Department of Economics, Business, Mathematics and Statistics “Bruno de Finetti” (DEAMS) and funded by Fondazione Cassa di Risparmio di Gorizia.

The study focuses on Collio, a wine-growing area in Friuli Venezia Giulia where both white and red wines are produced, offering a suitable context for a comparative analysis of the effects of weather conditions on wine quality. The aim of the research is to understand how climate variables, such as temperatures and seasonal patterns, may influence the final quality of the product.

Wine quality depends on many factors. Some are relatively stable or controllable, such as soil, winemaking techniques and the characteristics of the territory. Others, however, are beyond the producers’ control, such as climate, weather variability and extreme events.

The results show that white wines respond to weather conditions differently from red wines. In particular, the study highlights a delicate balance between spring and summer temperatures, with effects that may vary significantly even between individual varieties. Climate change, therefore, does not produce uniform consequences, but requires specific analyses by territory, grape variety and type of wine.

The study provides useful insights not only from a scientific perspective, but also for producers and policymakers. Understanding which varieties are more or less sensitive to climate conditions can help define adaptation strategies, including targeted choices in vineyard management and in the selection of the varieties best suited to new climate scenarios.

The research project also had an educational impact: the funding made it possible to support a two-year research fellowship, which later developed into a doctoral path within the University’s PhD Programme in Circular Economy.