Precipitation variation and water balance evaluation using different indices

Autor: Lidia Maria Apopei, Dumitru Mihăilă, Liliana Gina Lazurca, Petruț Ionel Bistricean, Emilian Viorel Mihăilă, Vasillică Dănuț Horodnic, Maria Elena Emandi
Jazyk: English<br />Slovenian
Rok vydání: 2024
Předmět:
Zdroj: Acta Geographica Slovenica, Vol 64, Iss 1, Pp 41–60-41–60 (2024)
Druh dokumentu: article
ISSN: 1581-6613
1581-8314
DOI: 10.3986/AGS.11416
Popis: The study evaluates the variability of water balance using different indices for the period 1961–2018 in Cotnari and surroundings, in the middle part of the Moldavian Plateau (MP), Romania. With the aid of statistical analysis and remote sensing, we discovered that the Cotnari's SPEI (Standardized Precipitation and Evapotranspiration Index) variability is characterized by severe values that alternate between significant excess and significant deficits. According to SPEI, between 57.2 and 61.4% of the months were near normal in terms of water balance. There were between 19.3 and 25.1% months with water excess and between 17.1 and 20.8% with water deficit. The links between NDVI and SPEI become stronger as SPEI reaches extreme values (above 1.5 units or below −1.5 units). The water balance indicates a decrease in available water resources.
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