This thesis is presenting the most important facts in the process of evapotranspiration, with some definitions and Penman–Montetith equation, which is a standard equation for evapotranspiration calculation.
In this work a calculation of reference evapotranspiration is presented, using Penman–Monteith equation, for Ljubljana-Bežigrad meteorological station. Several calculation procedures are presented, such as calculation using diffrent time steps of the data (hourly, daily, ten days, monthly) and calculation in case of missing climatic data.
During calculations using different time steps (daily, ten-days, monthly), no significant differences were found. When using various calculation methods for calculating evapotranspiration in case of missing data, the correct choice of calculation methods can give satisfactory results.
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