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Radio signals could be attenuated by different atmospheric parameters. The magnitude at which the radio signals attenuate depends greatly on the signal power, frequency and state at which the troposphere through which the signals propagate. In this study, specific attenuation of radio signal in southwest Nigeria is determined using some weather parameters. The results were compared with the one given...
The problem of underestimating or overestimating the aerosols loading over Kano is readily becoming a global challenge. Recent health outcomes from an extensive effect of aerosols pollution has started manifesting in Kano. The aim of the research is to estimate the aerosols loading and retention over Kano. Thirteen years aerosol optical depth (AOD) data was obtained from the Multi-angle imaging spectroradiometer...
Air pollution due to gas-flaring is a major concern in most region of the world. The short and long term effect of the massive air pollution on the life form within the area requires urgent attention because of the health implication. This research examines the impact of air pollutants in oil producing region of Malaysia using remotely sensed satellite data. The satellite data set was obtained from...
The control of air pollutants from anthropogenic sources seem almost impossible due to numerous influencing factors present in the atmosphere. This study carried out a virtual mathematical experimentation using Matlab and analytical approximation to estimate the dimensional impact of initial pollutant plume cloud from a sudden volcanic blast and the dynamics of its wind field. The impact concentration...
Aerosol ejection from cement factory may be classified as forms of pollutions categorized simultaneously as point source or non-point source pollution. The aerosol particulates fall under gravity as it is transported by the mean wind, mild and erratic turbulence. A model was propounded via known and unknown parameters to offer a holistic analysis of dispersion and deposition of aerosol. The transport...
The magnetic field in the sheath of monopole plasma antenna or the helix antennas has been found to have a negative impact on its general functionality. The vertical and horizontal signals at predetermined angles had been compromised by the sheath effect. It was observed that this phenomenon is almost unnoticed because magnetization has the highest magnitude when the device is switch on/off. In microscopic...
Total atmospheric absorption values due to oxygen and water vapor on terrestrial and Earth-space paths at frequencies between 1 GHz and 50 GHz were evaluated for 1% unavailability of an average year at two elevation angles of 5?? and 55??, which are typical for terrestrial and Earth-space links, respectively. Practical links to the Nigerian communication satellite (NigComsat1) uplink/downlink in the...
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