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Winkler index
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (March 2013) |
The Winkler Index, sometimes known as the Winkler Scale or Winkler Regions, is a technique for classifying the climate of wine growing regions based on heat summation or growing degree-days. In the system, geographical areas are divided into five climate regions based on temperature converted to growing degree-days, and is commonly known as Regions I–V (see below). The system was developed at the University of California, Davis by A. J. Winkler and Maynard Amerine.[1][2]
- ^ Amerine, M.A.; Winkler, A.J. (1944). "Composition and quality of musts and wines of California grapes". Hilgardia. 15 (6): 493–675. doi:10.3733/hilg.v15n06p493.
- ^ Winkler, A.J.; et al. (1974). General viticulture. University of California Press. ISBN 978-0520025912.
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