An Investigation of Solar Radiation, Dew Point, Relative Humidity, and Air Temperature in the Afar Region of Ethiopia

The study is aimed at analyzing monthly variations in air temperature, relative humidity (RH), solar radiation, and dew point temperature for the cities of Asayita, Dubti, and Samara between 2013 and 2017 by Using from the weather data from Meteorological Agency Ethiopia. The monthly average global solar radiation on the horizontal surfaces of the Afar region was calculated using the temperature, sunshine, and humidity models. The temperature model indicates that the places’ projected solar radiation is more than 5.24 kWh/m 2 /day, and the sunshine model indicates that it is more than 4.1 kWh/m 2 /day. Based on the research findings, the cities of Asayita, Dubti, and Samara in the Afar region of Ethiopia have evaluated global sun radiation that is advantageous for solar energy application. Furthermore, a direct association between the dew point temperature and RH at the study sites was additionally determined.