Warm summers and wet winters yield better wine vintages

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Warm summers and wet winters yield better wine vintages
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Wine quality is notorious for varying from year to year, but what makes for a 'good year?' Researchers show that weather plays an important role in determining wine quality.

By analyzing 50 years’ worth of wine critic scores from the Bordeaux wine region in relation to that year’s weather, the researchers showed that higher quality wine is made in years with warmer temperatures, higher winter rainfall, and earlier, shorter growing seasons—conditions that climate change is predicted to make more frequent.

To investigate how weather and climate impact wine quality, the researchers paired high-resolution climate data with annual wine critic scores from the Bordeaux wine region in southwest France from 1950 to 2020.

Overall, the researchers found that Bordeaux wine quality scores tended to improve between 1950 and 2020. Though this could be because Bordeaux's climate warmed over that period, it could also be because of the increasing use of technology in wine making over this period or because wine makers are increasingly matching their techniques to consumer preferences.

However, this is true only up until the point at which water becomes limited."The problem in scenarios where it gets really hot is water: if plants don't have enough, they eventually fail, and when they fail, you lose everything," says Wood."But the general idea or consensus is that the wines will continue to get better up to the point where they fail."

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Warm summers and wet winters yield better wine vintages, research showsWarm summers and wet winters yield better wine vintages, research showsWine quality is notorious for varying from year to year, but what makes for a 'good year'? In a paper publishing October 11 in the journal iScience, researchers show that weather plays an important role in determining wine quality. By analyzing 50 years' worth of wine critic scores from the Bordeaux wine region in relation to that year's weather, the researchers showed that higher quality wine is made in years with warmer temperatures, higher winter rainfall, and earlier, shorter growing seasons
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