air temperature, climatic parameters, evapotranspiration
Abstract
The air temperature is one of the major climatic parameter. As climatic parameter, it provides energy for evaporation, transpiration and water vapor cycling that determine the value of evapotranspiration. The air is heated by the earth's surface and by the solar radiation. Evaporation amount depend largely on the air temperature. Almost all methods for evapotranspiration estimation are based on climatic parameters, and only few methods use only temperature data.