Modelling of Evapotranspiration Field of Ecosystem

This paper deals with the modelling of evapotranspiration of ecosystems. It uses the Penman-Monteith method to estimate evapotranspiration and method based on the use of the Bowen ratio. The aim of the present article is to demonstrate the possibility of more precise methodology for modelling evapotranspiration and to display the evapotranspiration field when the measured data from meteorological stations are sup-plemented with the information in the form of infrared images of a monitored locality. This approach is demonstrated by the data observed in the selected ecosystem in the southern part of Bohemia. The infrared images of this locality were captured by infrared camera from a plane. The data processing and modelling of the evapotranspiration of the selected ecosystem was done using the Matlab programming environment. This article discusses the method of extraction information from infrared images and contains several images documenting the achieved results.