Hourly Variation of Gaseous Attenuation at a Tropical Location in 2013

Electromagnetic signals are attenuated by atmospheric gases is a phenomenon that has attracted the attention of many researchers for years now. The effect of gaseous attenuation is especially significant at frequencies from 10 GHz and above. This work investigates hourly gaseous attenuation from 10 to 50 GHz frequency range. The hourly and diurnal impact of gaseous attenuation at Ku, Ka and V bands frequency in 2013 at Covenant University ota southwest Nigeria a tropical station has been investigated. One minute integrated time atmospheric data such as pressure, temperature and relative humidity were obtained for the location from January to December 2013 as input data to the International Telecommunications Union (ITU-676-) gaseous attenuation model was used to calculate the attenuation due to oxygen and water vapor is hereby presented.