Evaluation of the impact of global warming and climate change on temperature and reference evapotranspiration: The case of Malatya province

Rapidly increased human activities cause an increase in the emission of greenhouse gases. These changes highly influence global warming, climate change, the presence of water and, the water cycle as in other numerous fields. Reference Total Evaporation (ET0) is a factor affected by these changes and, it is estimated on many issues such as determining the plant water requirement, planning agricultural, landscape irrigation projects, and making plant pattern selections. The case of the study inspects 17 meteorology stations in Malatya province. 1959 to 2019 monthly ET0 calculated with FAO Penman-Monteith method. As well as the appearance of global parameters and ET0 amounts change impacts on Malatya. Last year ET0 values changed %3. It is concluded that these increasing temperature values lead to an increase in the amount of ET0. The highest value was observed during the year in August. It was determıned that while the sixty-year average ET0 value was 6.8 mm/day, the 2019 value was 7.9 mm/day, 7.5 mm/day for the last ten years, and 7.3 mm/day for the last twenty years by Malatya meteorology station. It was shown all average scores as 7.7 mm/day. It is a project that can be considered about the design and thinking of plant water in general. Keywords: Global warming, Climate change, Evapotranspiration, Penman-Monteith, Malatya