ABSTRACT:In this study, wind speeds were analysed using the daily wind data obtained from Nigeria Meteorological Agency, Oshodi Lagos at the height of 10m at the different stations during the period of 2000-2010. Weibull , lognormal and normal probability density functions were employed. It was found that the daily mean wind speed groups and percentage frequency of occurrence in brackets in the inland locations (Jos, Kano, and Ilorin) and in the coastal locations (Lagos, and Port Harcourt) ranged from (13-18) ms -1 (70.6%), (8-12)ms -1 (84.4%), (4-5)ms -1 (67%) and (8-12)ms -1 75.8% to (4-7)ms -1

The extraterrestrial radiation is the solar radiation received at the top of the earth's atmosphere on horizontal surface. This quantity over selected stations in the tropics was investigated. Daily data of the extraterrestrial radiation on the earth horizontal surface for the year 2018 for stations: Iwo, Abuja, Enugu, Port-Harcourt, Sokoto and Maiduguri obtained from the archive of HelioClim website were analyzed using MATLAB and Statistical Packages for Social Science (SPSS Version 20.0) to estimate the extraterrestrial radiation of the station considered. The results of the MATLAB revealed that the value of the coincidence is − 2 × 10 4 −2 across all stations. In January, the values between 15-20 peaks were observed in the year with the Irradiation (− 4 × 10 4 −2) and the maximum (2 × 10 4 −2). The results revealed the Root Mean Square Error RMSE for Sokoto (139.99), Abuja (162.72), Iwo (177.07), Maiduguri (171.34), Enugu (191.07), Port-Harcourt (212.27). The results also revealed that quadratic trend equation which accounted in the range 95.9%-41.9%. The results then concluded that Sokoto and Maiduguri have the highest solar Irradiance as revealed by the result.

The year in year out variation in atmospheric parameters, solar radiation, and meteorological variables such as ambient temperature, relative humidity RH, wind speed etc, are posies that can be and are used to describe the atmospheric conditions. Ten years of data obtained from the Nigerian Meteorological Agency (NiMet) was analysed. Results showed that solar radiation rises from January to get to its peak in April which is maintained till August before it begins to fall again with the Sudan savanna area (Maiduguri) having a value of (15.70 MJm-2month-1) and freshwater swamp area (Ikeja) having the value of (10.16 MJm-2month-1). The extraterrestrial radiations calculated for the two stations are 333.53 (MJm-2month-1) and 195.53 (MJm-2month-1) respectively. However, the relative humidity of Ikeja (84.54%) is higher as compared to that of Maiduguri (42.23%). The minimum temperature ranges observed for the two stations varies from (22 - 24)0C and (12 - 26)°C, while the maximum temperature was as high as 33°C and 40°C obtained in April for Ikeja and Maiduguri, respectively. Similarly, the average wind speed is higher for Ikeja (4.97m/s) than for Maiduguri (4.62m/s). The result of the statistical correlation reveals that, in Maiduguri, solar radiation was found to have a significant negative relationship with relative humidity (r = -.256, p<0.01) and a significant positive relationship with minimum and maximum temperature (p<0.05). This means that minimum and maximum temperatures increase as solar radiation increases (p<0.05). Relative humidity decreases as solar radiation increases. In Ikeja, solar radiation was found to have a significant negative relationship with relative humidity (r =-.350, p<0.01) and wind speed (r = -146, p<0.05) and significant positive relationship with minimum temperature (r =.410, p<0.05) and maximum temperature (r =.575, p<0.01). In conclusion, the variables like relative humidity, minimum temperature and wind speed are higher in the freshwater swamp area of Nigeria as compared to the Sudan savanna area, while the solar radiation, extraterrestrial radiation and maximum temperature are generally higher in the Sudan savanna area of Nigeria.

Solar distiller was constructed and tested in this study. The purpose is to get a portable water from nearly any source available in a relatively cheaper means using a renewable solar energy. The result obtained clearly confirmed the reliability of this method to provide portable water especially in a rural area of developing country like Nigeria where the supply of fresh water is inadequate. A local dirty stream that is constantly throughout the year served as the source of the brackish water was used for this work. Sample taken from this stream was distilled using the constructed double slope solar distiller. The incoming solar radiation from the sun is focused and concentrated on to solar water distillation unit. Analyzing the sample of the distillate, th e pH value of the brackish feed water was 9.20 ±1.10 while that of the distillate was 8.10 ±1.06, which falls within the WHO limits of 6.5-8.5 for drinkable water.

Humans are bombarded daily with myriads of health-related dairy information and its impact on their health. While much of this information could be beneficial, others may be harmful, especially to the non-scientific publics, who cannot immediately verify such information. These non-scientific publics could also find it daunting to interpret and understand scientific findings on sustainable dairy benefits, thereby increasing the scourge of misinformation. While studies on the benefits of sustainable dairy production to human health have received much scholarly attention, there is a recurring challenge of dairy misinformation. Hence, communicating dairy products’ scientific benefits through research findings, facts, and counter-narratives becomes imperative. Science communication offers various methods to transmit science-related information to non-experts, thereby reducing misinformation. This study examines non-scientific publics knowledge and understanding of dairy benefits to understand aspects of dairy misinformation. Quantitative data was generated among 124 purposively selected non-scientific respondents, while five (5) professional medical practitioners (in)validated respondents’ opinions on aspects of dairy misinformation and scientific beliefs. The findings revealed a high knowledge of dairy benefits while there were aspects of misunderstanding and misinformation around dairy benefits. Moreover, respondents were uninformed about scientific findings and their benefits. This study suggests that providing counter-dairy narratives through adequate science communication, media (traditional and digital), community-level interactions, and multidisciplinary partnerships between science-based and non-science-based scholars could be a panacea to reducing dairy misinformation.