In double-blind tests by experts, wines from France are often beaten by wines from Napa or even New Jersey. The results between one region and another are stati

In double-blind tests by experts, wines from France are often beaten by wines from Napa or even New Jersey. The results between one region and another are statistically indistinguishable. http://www.newyorker.com/tech/frontal-cortex/does-all-wine-taste-the-same http://www.newyorker.com/tech/frontal-cortex/does-all-wine-t... http://www.theguardian.com/lifeandstyle/2013/jun/23/wine-tasting-junk-science-analysis http://www.theguardian.com/lifeandstyle/2013/jun/23/wine-tas... So yes, if over time regional temperatures change then it is likely the center mass of grape-growing may move a little pole-ward. Existing grape-growers will adapt by either growing different grapes or changing the way they grow their current grapes. This is also true for corn. And wheat. That also will move north a little bit and favor different strains over time. And yes, the resulting subtle changes due to localized fog, minerals in the soil or farming expertise might indeed modify the taste or other characteristics of the resulting wine. Or corn. Or wheat. But whatever bizarre characteristics we choose to attribute to wines based on what valley they come from isn't set in stone. The people who now claim to especially prize (when they see the label) a certain wine grown in a certain year in a certain valley in Bordeaux could just as easily decide tomorrow to feel the same way about a different wine grown in that valley, or about a new wine grown in Tasmania. Much of the nuance attributed to wine is a delusion; there is no deep social need to humor the delusional.