EVAPOTRANSPIRATION ESTIMATION FROM INFRARED SURFACE TEMPERATURE. II: THE SURFACE TEMPERATURE AS A WET BULB TEMPERATURE

Infrared surface temperature (T s ) has been considered a practical approximation of the true aerodynamictemperature (T o ). Once shown that the two temperatures are basically not the same, a new interpretation of T s became anecessity. Since T s reflects the evaporative cooling that occurs due to transpiration, the hypothesis that it represents a wetbulb temperature is tested. Mean absolute difference between measured and theoretically derived...