{"title":"Variation of Metrological Parameters as They Affect the Tropospheric Radio Refractivity for Akure South-West Nigeria","authors":"Famoriji J.Oluwole","volume":82,"journal":"International Journal of Geological and Environmental Engineering","pagesStart":704,"pagesEnd":707,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/17176","abstract":"
This research work examines the effect of variations of metrological parameters on the tropospheric radio refractivity during dry and raining seasons for Akure in 2013. The daily averages of radio refractivity during dry (January) and raining (August) seasons were calculated from the data obtained from the Nigeria Metrological Agency (NIMET). The data that was used for the computation of radio refractivity is a daily interval of the variations of metrological parameters for each day in the troposphere for Akure. Consequently, the daily averages of radio refractivity during raining season (August) were greater than the results in dry season (January) as a result of the variations in meteorological parameters such as temperature, humidity and atmospheric pressure in the lower troposphere.<\/p>\r\n","references":"[1] M. Grabner and V. Kvicera, (2008).Radio Engineering 12, No.4, 50. \r\n[2] Adediji .T.A and Ajewole. M.O. (2008). Vertical Profile of Radio \r\nRefractivity in Akure south-West Nigeria, Vol. 4, p 157-168. \r\n[3] Freeman R. L. (2007). Radio System Design for Telecommunications. \u2013 \r\nHoboken, New Jersey, John Wiley&SonsInc Pb, p 880. \r\n[4] Valma E., Tamo\u0161i\u016bnait\u0117 M., and Tamo\u0161i\u016bTamo\u0161i\u016bnien\u0117 M., \u017dilinskas \r\nM. nas S. (2010). Determination of radio refractive index using \r\nmeteorological data Electronics and Electrical Engineering. \u2013 Kaunas: \r\nTechnologija,.\u2013 No. 10 (106). \u2013 P. 125\u2013128. \r\n[5] Priestley, J. T and Hill R. J. (1985) Measuring High\u2013Frequency \r\nRefractive Index in the Surface Layer Journal of Atmospheric and \r\nOceanic Technology, Vol. 2. \u2013 No.2. \u2013 P. 233\u2013251. \r\n[6] Falodun S. E., Ajewole M. O. (2006). Radio refractive index in the \r\nlowest 100\u2013m layer of the troposphere in Akure, South Western Nigeria \r\nJournal of Atmospheric and Solar\u2013Terrestrial Physics, Vol. 68.\u2013 No. 2. \u2013 \r\nP. 236\u2013243. \r\n[7] Willoughby A. A., Aro T. O., Owolabi I. E. (2002). Seasonal variations \r\nof radio refractivity gradients in Nigeria Journal of Atmospheric and \r\nSolar\u2013 Terrestrial Physics.Vol. 64. \u2013 P. 417\u2013425 \r\n[8] GuanjunGuo, Shukai Li. (2000). Study on the vertical profile of \r\nrefractive index in the troposphere International Journal of Infrared and \r\nMillimeter Waves, Vol. 21. No.7. \u2013 P. 1103\u20131112. ","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 82, 2013"}