A Method for Determination of Infrared Emittance of Leaves

Abstract

A relatively simple method for determining the infrared emittances of leaves gives reproducible results that are in good agreement with two other methods currently used to determine infrared emittances of soils. Measurements on a wide variety of plants indicate that significant differences exist among the various species. Emittances determined by infrared thermometers of different spectral sensitivity are not uniquely related, thereby emphasizing the importance of the emittance measurement.