Abstract
Weather data from the Prosecco area were used to apply a model proposed by Hermann and Voerkelius for estimating δ 18O values in wine and to determine the spatio-temporal variability of these values. Eleven reference stations were considered as inputs for 1973-2017 meteorological data. The results of the model revealed interannual and spatial variability similar to that observed for other grape varieties or other viticultural areas, and we highlight the need for more careful consideration of meteorological factors in causing the variation in δ 18O values. Meteorological modeling of isotopic values can help constrain sampling procedures aimed at collecting representative data from different Prosecco production areas and estimating δ 18O range corresponding for each year to overall “Prosecco” region. Estimated values revealed a significant degree of temporal variability across the eleven sites and consequently across the considered years. More, we obtained experimentally δ 18O values for 36 bottled “Prosecco” wines collected from 2012 to 2017 and compared these results with the range defined by the HV model for each corresponding year, and a good data consistency was found.
- Received July 2019.
- Revision received December 2019.
- Revision received February 2020.
- Accepted February 2020.
- Published online March 2020
- ©2020 by the American Society for Enology and Viticulture
Sign in for ASEV members
ASEV Members, please sign in at ASEV to access the journal online.
Sign in for Institutional and Non-member Subscribers
Log in using your username and password
Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.