Heat Environment Affected by Different Land Surface Conditions

Study of heat environment and evaporation affected by different surface condition. Observation and simulation of bare, grass and paddy field were performed, which results were compared. The observation was conducted at an experimental farmland. The simulations model used in the study includes numerical model of temperature, wind and humidity distributions in atmospheric boundary layer and soil temperature change. Crop resistance model was adopted to analyze heat energy exchange on surface layer. Using the model, simulations were conducted for 6 fine days in 6 different months using meteorological data measured at other experimental stations. The results show different thermal behavior of the three surface conditions. Temperature order from the highest are bare, grass and paddy; and evaporation order from the highest are paddy, grass and bare.