The importance of temperature data in plant phenotyping applications is well known as is the difficulty of correlating temperature to plant behaviours. This work investigates the emission of thermal radiation from plant leaves to validate non-contact temperature measurements as well as modelling approaches to extend the use of temperature data obtained continuously from outdoor field crops. Temperature data and weather data are combined to calculate a stomatal resistance to water loss to satisfy an energy balance. Several approaches to modelling an energy balance and their results are compared and contrasted
