Browsing by Author "Dada, Joseph"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Investigation of Wind Parameters at an Akure Station.
    (2013-12) Ogunjo, Samuel Toluwalope; Dada, Joseph; Olurotimi, Elijah
    The role of wind cannot be overemphasized. It has been used for centuries in electric power generation and its role has been identified in many disease epidemics. We aim to investigate the wind direction and speed pattern at the surface (ground level) for four months in a year. Data for this research was obtained from the Wireless weather station installed on the 220 m Nigeria Television Authority (NTA) TV tower station located at lju, Akure, South-West Nigeria (longitude 5' 11'24oE(5.19'E) and latitude' of 7’15'00oN ( 7.25'N). The months of January and February (representing wet season) while the mouths of June and September (representing dry season) in 2009 were chosen for analysis. A simple angular histogram is obtained by wrapping it linear histogram round a circle, however it is more common to display angular data with each group as a sector, which is termed a wind rose. Wind speed and directions for the dry months under consideration show noticeable pattern while the wet months do not show any pattern.
  • Thumbnail Image
    Item
    Variation of Microwave Radio Refractivity Profiles with Temperature over Akure, Nigeria
    (Global Journal of Computer Science and Technology: G Interdisciplinary, 2020) Ajewole, Moses; Adediji, Adekunle; Ojo, Joseph; Falodun, Sunday; Adedayo, Kayode; Ewetumo, Theophilus; Ashidi, Ayodeji; Adebusola, Samuel; Ogunjobi, Kehinde; Oluleye, Ayodeji; Dada, Joseph; Ojo, Olalekan
    A Preliminary result of the measurement of radio meteorological parameters for the profiling of radio refractivity over Akure, Nigeria, is presented. One year (January-December 2018) data of temperature, pressure, and relative humidity were collected for ground surface and heights of 50, 100, 150, and 200 m respectively from the ongoing measurement of the parameters by Communication Physics Research Group of the Federal University of Technology, Akure, Nigeria. From the data collected, radio refractivity, N were computed, and correlation of N with temperature was evaluated. Results showed that the mean value of surface refractivity obtained during this period of study is 365 N-units while that at the elevated altitudes are: 362, 359, 357, and 354 N-units respectively. It was also deduced that radio refractivity decrease with an increase in height, and its values were generally higher during the rainy season (April - October) than in the dry season months (November -March). Correlation between N and temperature was high during the wet season and low during the dry season.