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Has there ever been any detailed study on weather patters and how they effect the wine? Case in Point...I live 1.5 hours from Napa CA and the summers here are almost like clock work. But some years are truly outstanding (97) and some years are just so-so. This year for example we had 13 straight days of over 100 and 8 over 105. (Hottest July on record and the coolest August on record...not one day in August over 100) How will this effect the wine, if at all?
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There are others on this board who know more about this topic than I do, but I will try to answer anyway.
"Has there ever been any detailed study on weather patters and how they effect the wine?"
Yes. A lot of them.

When the weather is very favorable yeilds increase. It is my understanding (someone please correct me if I am wrong) that the yeilds of the a vintage that follows a high yield year are often lower than average.


"This year for example we had 13 straight days of over 100 and 8 over 105. (Hottest July on record and the coolest August on record...not one day in August over 100) How will this effect the wine, if at all?"
Very hot temperatures can cuase uneven ripening within the clusters or even burn the grapes lowering yields. Overall uneven ripening is bad. That said modern technology in the vineyard can help the vineyard manager handle this problem via irrigation and other methods.

Again I am not an expert. I'm sure someone will correct or elaborate at lease one of my answers.

- David
@irwin posted:

Drought in Italy.  Hurting in Tuscany.

https://www.yahoo.com/news/dro...famed-092236544.html

In a short time in Italy wine will be made only in the mountains, hoping that in August it will rain a lot so as to have elegant wines, probably not suitable for aging but highly drinkable. The alternative will be represented by thousands of ultra-heavy Amarone-style wines from 15 ° upwards, to be sipped while observing from the window the irreversible decadence of the Belpaese as it becomes part of the African continent. The replacement of the inhabitants is well underway, the climate will do the rest.

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