Spatial distribution of the Cool Night Index (CI) on the territory of the Crimean Peninsula
- Authors: Rybalko E.A.1, Baranova N.V.1, Erkhova A.S.1
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Affiliations:
- All-Russian National Research Institute of Viticulture and Winemaking “Magarach” of RAS
- Issue: Vol 17, No 4 (2025)
- Pages: 94-108
- Section: Ecology, Soil Science and Nature Management
- Published: 31.10.2025
- URL: https://journal-vniispk.ru/2658-6649/article/view/351922
- DOI: https://doi.org/10.12731/2658-6649-2025-17-4-1269
- ID: 351922
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Full Text
Abstract
Background. One of the most important indices used in viticulture is the Cool Night Index (CI), which characterizes the conditions of accumulation of coloring and aromatic substances during grape ripening.
Purpose. To study the spatial distribution of the Cool Night Index (CI) on the territory of the Crimean Peninsula.
Materials and methods. Daily data from 16 meteorological stations of the Crimean Peninsula for 2006-2014 and 2017-2020 obtained from the resource https://rp5.ru/ and verified on the basis of official decade data provided by Federal State Budgetary Institution Crimean Administration on Hydrometeorology and Environmental Monitoring were used. The SRTM-3 digital elevation model was used to analyze the spatial distribution of morphometric relief features. Spatial data analysis and modeling were carried out using GIS QGIS Desktop. Calculation of the Cool Night Index was carried out in accordance with Resolution OIV 423-2012. The coefficients in the mathematical model were selected using the least squares method.
Results. As a result of this work long-term meteorological data on 16 meteorological stations of the Crimean Peninsula necessary for calculating the Cool Night Index have been collected and analyzed; the value of the Cool Night Index at meteorological stations of the Crimean Peninsula has been calculated; a mathematical model describing the regularities of spatial variation of the Cool Night Index under the influence of geomorphological characteristics of the area has been built; a large-scale digital map of the spatial distribution of the Cool Night Index on the territory of the Crimean Peninsula has been built; the ratio of the areas of territories with different ranges of the Cool Night Index according to the generally accepted classification has been analyzed. The Crimean peninsula has a wide range of variation of the Cool Night Index allows with the right combination of grape varieties and the territory for their cultivation to obtain a wide range of high quality viticultural and wine-making products.
About the authors
Evgeniy A. Rybalko
All-Russian National Research Institute of Viticulture and Winemaking “Magarach” of RAS
Author for correspondence.
Email: rybalko_ye_a@mail.ru
ORCID iD: 0000-0002-4579-3505
Scopus Author ID: 57188725386
Cand. of Agric. Sci., Leading Staff Scientist, Head of the Agroecology Sector
Russian Federation, 31, Kirova Str., Yalta, 298600, Republic of Crimea, Russian Federation
Natalia V. Baranova
All-Russian National Research Institute of Viticulture and Winemaking “Magarach” of RAS
Email: natali.v.0468@mail.ru
ORCID iD: 0000-0002-2588-360X
Scopus Author ID: 57188716916
Cand. of Agric. Sci., Senior Staff Scientist, Leading Staff Scientist, Agroecology Sector
Russian Federation, 31, Kirova Str., Yalta, 298600, Republic of Crimea, Russian FederationAlina S. Erkhova
All-Russian National Research Institute of Viticulture and Winemaking “Magarach” of RAS
Email: alina_meotida@mail.ru
ORCID iD: 0000-0002-6920-471X
Junior Staff Scientist, Agroecology Sector
Russian Federation, 31, Kirova Str., Yalta, 298600, Republic of Crimea, Russian FederationReferences
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