Investigating solar radiation (case study: Shemiranat city)

Solar energy is one of the most important and cleanest types of renewable energy in the world. Suitable climatic conditions in Iran due to being in a special geographical position and the high potential of receiving solar energy, is a factor to make the most of this huge source of clean energy production. Information related to global solar radiation is needed in many fields such as agriculture, hydrology, solar energy systems, and studies related to water, soil, and plant relationships. In stations where there is no solar radiation measuring device, using common estimation models, the value of this parameter can be estimated with appropriate accuracy. Meanwhile, the use of mathematical methods as one of the methods of calculating solar radiation is very common. Based on this, the aim of this study is to calculate the amount of solar radiation (pure, in clear sky, short wavelength radiation, etc.) for the synoptic station in the north of Tehran. Using computational methods, we will calculate all the parameters involved in radiation estimation and reach the final goal. Therefore, the average net outgoing long wave radiation is 13.38 MJ/m2/day, solar radiation in a clear sky is 12.89 MJ/m2/day, specific incoming short wave radiation is 7.33 MJ/m2/day, daily extraterrestrial radiation is 16.53 MJ/m2/day and long wave radiation Short wave is 9.77 MJ/m2/day.