The diurnal time series relationship between radiant energy from surface and from air for satellite data analysis

Abstract

Solar irradiance, surface and air temperatures change periodically day by day. We measured surface temperature, air temperature, humidity and wind velocity on concrete, asphalt, soil and grass every hour for 24 hours. The relationship between the diurnal radiant energy from surface and air, and diurnal solar irradiance were studied as a function of time. A linear relationship was established between them, when the phases were synchronized. The relationship between diurnal radiant energy from the surface and from air was studied. A clear linear relationship was found between them. The values of parameters of the relationship were determined using measured data and compared with the estimated values using the radiation balance model. Using a linear relationship, we can estimate the surface and air radiant integrated over one day using Landsat/TM or ADEOS-II/GLI data.