The rise of wine in alcohol

The researchers analyzed climate data from 1992 to 2009 and 129,123 samples of wine from around the world (including 80,421 red wines and 46,985 white wines). It was found that the growth rate of the thermal index in most wine countries was lower than the increase in alcoholicity, and therefore climate change may not be the main reason for promoting alcoholism.

Over the past 18 years, the average alcohol content of wine has increased by 1.12%, far higher than the heat index, and the average annual heat index is forecast to rise by only 0.05%. "And during the grape growing season, when the temperature rises 6.67 degrees Celsius, the degree of alcohol in the wine increases by 1%."

The study also found that there is a difference between the alcohol content and the actual alcohol content on the label. Among 100,000 samples of wine, 57% of the actual alcohol content of the product is higher than the label, which is dominated by New World red wine, and its average alcohol content is 0.45 degrees higher than the mark.

The author of the report, Julian Alston of UC Davis University, also proposed other influencing factors, such as market preferences, “because for wineries, to provide consumers with the desired wine characteristics (including Unreal alcohol content and other label information may be profitable."

Elston also pointed out that the tax rate is also a big incentive for labeling false alcohol content. According to the regulations, wines below 14 degrees are subject to a consumption tax of 1.07 dollars per gallon. The 14.1-21 degrees of wine, the consumption tax per gallon is 1.57 US dollars. In view of this, the actual degree of wine in the world will be higher.