Projected effects of climate change on Tempranillo and Chardonnay varieties in La Mancha Designation of Origin

Climate is one of the components terroir that most influences grape growth and development. Vines might suffer significant impacts under climate change, although they can be different depending on variety location. The aim this study was to analyze vine phenology composition variability related weather conditions in La Mancha Designation Origin, Spain, potential changes caused by change. research focuses Tempranillo Chardonnay varieties. Phenological dates at ripening were evaluated for period 2000–2019 climatic variables. This information used project variations emission scenarios (Representative concentration pathways RCP4.5 RCP8.5) 2050 2070. An advance projected two varieties, agreement with observed years conditions. could 6, 11, 9, 8 days 4, 10 Chardonnay, respectively, bud break, flowering, veraison, maturity scenario, up 50% higher PCP8.5 scenario. phenological timing will imply warmer conditions, which affect quality. A decrease titratable acidity both varieties due increasing temperatures, would have negative implications anthocyanin concentrations are temperature water deficits. presents a novelty DO, where there no previous analysis respect. first vine-growing region projections made aforementioned cultivars, whose response analyzed expected relation those cooler areas.