Determining Parameters of Tbilisi's Winter Regime under Conditions of Climate Change and the Accuracy of their Determination
DOI:
https://doi.org/10.52340/ggj.2025.05.03.06Keywords:
Global climate, frosty days, winter regimeAbstract
This study examines the winter temperature regime of Tbilisi, Georgia, over the period 1881–2018 using four analytical approaches: difference, linear, cyclic, and non-linear approximations. Nine temperature-related parameters were analysed, their probability density distributions were calculated, and the performance of each method was evaluated. The results indicate a gradual warming trend in average frosty-day temperatures and cumulative frost-related indices, accompanied by a decrease in the number of frosty days. Absolute minimum temperatures increased by approximately 0.5 °C over an 87-year period. The study demonstrates the usefulness of applying multiple approximation methods for assessing regional climate trends, particularly in areas with limited data coverage.
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Tavartkiladze, K., & Bolashvili, N. (2023). Parameters determining the winter regime of Tbilisi under warming conditions and the accuracy of their determination. Proceedings of the M. Nodia Institute of Geophysics. Ivane Javakhishvili Tbilisi State University. ISBN 978-9941-36-147-0
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