a growing season had near optimum temperatures, weather events such as frost, hail, or untimely rain likely reduced vintage quality. Conversely, high ratings were achieved during cooler than average growing seasons (e.g., for Barolo a score of 100 was achieved during a growing season 1.1 ◦C below average) and were likely due to less variability in the day-to-day temperatures during the season.
The importance of these predictions becomes obvious when compared to the long-term (1950–1999) mean growing season temperatures for the regions (Ta- ble V). The regions range from being at their optimum (Barossa Valley white wines) to being 1.4 ◦C below their optimum (Loire Valley red wines) with an av- erage across all twelve regions of 0.8 ◦C below the predicted optimum. However, Table V also shows that the average from 1950–1999 was well below the 1990–1999 average, when growing season temperatures in almost all wine regions increased dramatically: during this time period, many wine regions were extremely close to their optimum temperature. For a few regions the 1990s were even too warm for the predicted optimum
a growing season had near optimum temperatures, weather events such as frost, hail, or untimely rain likely reduced vintage quality. Conversely, high ratings were achieved during cooler than average growing seasons (e.g., for Barolo a score of 100 was achieved during a growing season 1.1 ◦C below average) and were likely due to less variability in the day-to-day temperatures during the season.The importance of these predictions becomes obvious when compared to the long-term (1950–1999) mean growing season temperatures for the regions (Ta- ble V). The regions range from being at their optimum (Barossa Valley white wines) to being 1.4 ◦C below their optimum (Loire Valley red wines) with an av- erage across all twelve regions of 0.8 ◦C below the predicted optimum. However, Table V also shows that the average from 1950–1999 was well below the 1990–1999 average, when growing season temperatures in almost all wine regions increased dramatically: during this time period, many wine regions were extremely close to their optimum temperature. For a few regions the 1990s were even too warm for the predicted optimum
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