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Title: ANALYSIS OF DIFFERENT REFERENCE EVAPOTRANSPIRATION METHODS IN SOUTH-EASTERN SERBIA
ANALYSIS OF DIFFERENT REFERENCE EVAPOTRANSPIRATION METHODS IN SOUTH-EASTERN SERBIA

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Mladen Milanovic
10.5593/sgem2022/3.1/s12.03
10.5593/sgem2022/3.1
1314-2704
978-619-7603-42-2
English
22
3.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Hydrology and Water Resources
Evapotranspiration is an important component of hydrological balance, and it represents a complex process of water evaporation form water bodies, soil and plants. The Food and Agriculture Organization of the UN proposed the Penman-Monteith equation as the most reliable method for calculating reference evapotranspiration. However, the application of Penman-Monteith is often limited in many regions, due to the requirement for a large amount of meteorological data. In such circumstances, it is necessary to identify an alternative method with similar efficiency.
The goal of the paper is to define the best method, out of the Hargreaves, adjusted Hargreaves, Thornthwaite, calibrated Thornthwaite and adjusted Thornthwaite methods, which gives results similar to those of the Penman-Monteith method (but does not require a wide range of input data) for South-eastern Serbia. South-eastern Serbia was observed through Nis, Vranje and Dimitrovgrad stations, for the period 1989-2018. In order to define the best match with the Penman–Monteith method, statistical indicators were used: mean bias error – MBE, mean absolute error – MAE and root mean square error – RMSE. The final results of the indicators showed that, from all the analyzed methods, the adjusted Hargreaves method matches the Penman-Monteith method best, i.e. the adjusted Hargreaves method has the following values: MBE = -0.076, MAE = 0.225 and RMSE = 0.318, which are the lowest values, compared to other methods.
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The presented research is a part of the project of the Serbian Academy of Sciences and Arts, Branch in Nis (0-15-18) and is also funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia.
conference
https://doi.org/10.5593/sgem2022/3.1/s12.03
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
25-32
04 - 10 July, 2022
website
8522
reference evapotranspiration, meteorological data, South-eastern Serbia.