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In this paper, the impact of atmospheric parameters (atmospheric temperature, pressure, relative humidity and wind speed) and noise temperature on digital terrestrial television signal strength over Karshi area, Abuja, North-Central part of Nigeria has been examined. Measurements were taken for a period of nine months (April 2019 – December 2019) to cover the commencement of rainy period and towards the end of rainy period. The results showed that atmospheric and noise temperature as well as wind speed weakly influenced the signal strength while relative humidity strongly influenced the signal strength. The effect of atmospheric pressure over the signal strength was not consistent during the period of measurement. The signal strength of AIT, NTA, Channels TV and ETV were negatively affected by the atmospheric temperature up to about88.8%, 25.6%, 16.5% and 93.2%, respectively; the noise temperature up to about 85.3%, 13.4%, 5.9% and 90.7% respectively and wind speed by about 89.2%, 26.8%, 16.3%, and 92.4%respectively. However, the signal strength was affected positively by the relative humidity up to about 87.9%, 18.7%, 10.1% and 92.4% respectively, while the atmospheric pressure affected NTA and Channels TV negatively by about 21.3% and 26.8%, respectively and affected AIT and ETV positively by about 22.7% and 26.8%, respectively. Findings from this study will be of help to satellite link designers, policy makers, antenna modelers and other TV transmission equipment designers on how to mitigate the effect of some of the atmospheric components on digital terrestrial signal strength reception in Nigeria.

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The effect of temperature and relative humidity on WE FM radio station (106.3MHz) Abuja, Nigeria, during Harmattan period was carried out with the measurement of frequency modulation (FM) signal strength by digital CATV signal meter and the temperature and relative humidity measured by digital Hygrometer/thermometer. It was observed that the signal strength was lower during the sunny period but higher in the morning and evening when there was little or no sun. It was also found out that both temperature and relative humidity have effect on the radio station signal strength with the correlation coefficient of -0.79 between signal strength and temperature, and 0.91 between signal strength and relative humidity.It was concluded from the correlation coeffici signal strength is directly proportional to the relative humidity but inversely proportional to the temperature, but the effect of both was higher in harmattan than in rainy season when compared to our the result of our previous work on the same station.

The impact of temperature and relative humidity on sex differences among schizophrenia patients at Neuropsychiatric Hospital, Akure, and Ondo State, Nigeria was examined in this paper. Two independent variables (temperature and relative humidity) and one dependent variable (number of schizophrenia patients that visited the hospital from (2010-2017) data were collected. The population of study were 13,834 (in-patients and out-patients) for the period of eight years; that comprised 7,290 (52.70%) female and 6,544 (47.30%) male schizophrenia patients. The collected data were analyzed with the use of single regression and multivariate regression analyses. This study therefore, found that climate parameters: relative humidity and temperature had overlapping effects on the number of male and female schizophrenia patients that consulted at the hospital. It was found that increase in temperature had negative association with the number of schizophrenia patients i.e., both sexes were vulnerable to the risk of schizophrenia (mental ill-health); and that the number of female schizophrenia patients recorded for the eight years was higher in number compared to the male schizophrenia patients. It was also observed that the vulnerability of males to the risk of schizophrenia with reference to relative humidity increased and differed from the female vulnerability. This is an indication that other factors -bio psychosocial, environmental, culture etc. may not have made male and female population equally vulnerable at the risks of schizophrenia. The probability that the male population is more vulnerable to the risk of schizophrenia cases as relative humidity and overlapping effect increases is 0.13 and 0.22 respectively for male while that of female is 0.12 and 0.15 respectively. The number of schizophrenia patients diagnosed and traced to increase in relative humidity and overlapping effect was 2,041 females and 3,099 males; 2,019 females and 1,718 males respectively. This might be due to the fact that: male patients respond to treatment very slowly as compared to females; the recovery period of males with schizophrenia was longer than for females; consequently, the rate of discharge from hospital for male schizophrenia patients was lower than the discharge of the female schizophrenia patients; the cognitive deficits and memory delay was more in male schizophrenia patients than the female. Therefore, all these can aggravate as relative humidity increases coupled with the: risk of psychoactive substance use; the protective effect of estrogen is lower in male than female; psychoactive substance consumption rate is higher in male than in female. Also, increasing rate of schizophrenia is caused as relative humidity increases because testosterone reduction in male occurs during hot weather, and reduction in the brain gray matter in male tend to reduce neuron density.