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1 2022

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Long-term analysis of air temperatures variability and trends on the Romanian Black Sea Coast

Bosneagu Romeo, Lupu Carmen Elena, Torica Emil, Lupu Sergiu, Vatu Nicolae, Tanase Viorel Mihai, Vasilache Camelia, Daneci-Patrau Daniel, Scurtu Ionut Cristian

Acta Geophysica

2022

Vol. 70, no 5

2179--2197

Air temperature is one of the most important parameters that contribute to weather variability over time, being influenced by the flow of solar radiation, the general circulation of currents in the atmosphere relief. The present paper analyzes the minimum, maximum, and mean temperatures in Dobrogea, on the Romanian Black Sea coastal area, aiming to illustrate their evolution, which is a precondition for sustainable development in this region, from the perspective of regional and global climate changes. The weather stations included in this study are Constanta, Mangalia, Gura Portitei, Sfantu Gheorghe, and Sulina. The Pettit Test and the Standard Normal Homogeneity Test were used to determine changes in the evolution of the air temperature. For the period 1990–2020, the analysis of the change points, with a 95% confidence level, shows a particularly interesting situation supporting the general evolution of air temperature at global level. Nonparametric tests including linear regression, Mann–Kendall, and Sen's slope tests were used to analyze trends for monthly, seasonal, and annual series. Results showed an increasing trend in the annual minimum, maximum, and mean temperatures in all five weather stations.