Empirical modeling of average daily solar radiation using surface meteorological observations of University of the Philippines Los Baños

Abstract

Surface meteorological observations were obtained from National AGROMET Weather Station in UP Los Baños. Using empirical method the data obtained from the station were used to make a model that can predict the average amount of daily solar radiation in the said area. A multiple linear regression on the relationships between the measured solar radiation and, the extraterrestrial solar radiation; the solar declination angle; minimum and maximum temperature ratio; the monthly average daily temperature; relative humidity; amount of rainfall; percent possible sunshine; USWB pan evaporation; Mean Sea Level Pressure; and average daily sunshine length was used. It was found out that the parameters are strongly related with solar radiation.