Analytical Modeling of the Relationships Between Sun Radiation and Micro and Nano Particles in the Air

In this study, the concentrations of micro and nano-sized pollutant particulates in the air and simultaneous sun radiation were monitored and then the effects of air pollutant particulates on sun radiation were evaluated. Measurements were done during summer season in the Karaj, Meshkin-dasht. Statistical investigation of the collected data, resulted three equations, indicating the effects of PM10, PM2.5 and PM1.0 concentration and distance (time) from solar noon on the amount of solar radiation. Finally, three models obtained as different independent parameters (PM10, PM2.5 and PM1.0). These equations predicted the sun radiation to be 1952, 1954 and 1953 (kj/m2), when the actual (measured) amount of this parameter was 1953 kj/m2.