A comparison of 4 empirical potential evapotranspiration (PET) equations

This poster describes how the GP2 Data Logger’s Script Editor and Simulator features, were used to compare 4 empirical evapotranspiration equations. This powerful new Script Editor function enables the user to quickly apply and review mathematical functions, models and experimental methods. This capability may help users to plan and develop experimental programmes prior to time consuming experimental work. Potential applications are numerous, including: the calculation of evapotranspiration, irrigation control and disease prediction. In the simulator work shown below we demonstrate added functionality (that can be installed into the GP2 Logger and Controller) that uses solar radiation, air temperature and relative humidity data to estimate PET.