Margaret Jegede - Academia.edu (original) (raw)

Papers by Margaret Jegede

IGI Global eBooks, 2019

This study aims at examining and mapping the spatiotemporal distribution of meningitis epidemic, ... more This study aims at examining and mapping the spatiotemporal distribution of meningitis epidemic, in relation to climate variability, using GIS and Remote Sensing techniques. Using the northern part of Nigeria as a case study, data on meningitis epidemic were obtained from the archive of National Bureau of Statistics, Nigeria for the periods between 1998 and 2013. The data were updated with collection from Nigeria Demographic and Health Survey (NDHS). Also, Nigerian Ministry of Health has compiled consistent statistics on meningitis incidence for the periods. A meningitis distribution map was derived from an environmentally-driven form of predicted probability of epidemic experience as it is in International Research Institute for Climate and Society (IRI) Database. The results showed that Meningitis Epidemic is very high during months with low rainfall. Thus, seasonality of rainfall and temperature are important determinants of Meningitis Epidemic incidence in the Northern part of Nigeria. Therefore, it can be confirmed, as cited in some literatures, that the distribution of the epidemics has a strong association with the environment, especially climate variability. Although meningitis surveillance systems in Nigeria have improved, they still fall short of the sensitivity required to demonstrate incidence changes in vaccinated and non-vaccinated cohorts and complementary approaches may be needed to demonstrate the impact of the vaccines. There is however, a need for a new technology and innovation like an integrated GIS, and other environmental modeling system, to allow health practitioners as well as policy makers, for better management, productivity and profitability.

University of Calgary Press eBooks, Jul 15, 2023

Climate Change Management, 2020

This paper examines the public reports on extreme weather events and climate change in Nigeria. T... more This paper examines the public reports on extreme weather events and climate change in Nigeria. The investigation was conducted to show how national media have been reporting extreme weather events in Nigeria. The report on extreme weather events from two major national dailies were assessed. The results showed that extreme weather events reports are not properly described by most national media. The total articles of extreme weather events reported by Vanguard newspaper were 118 and 78 were from the Punch newspaper over the period. The percentages of specific extreme events reported during the study period by the Vanguard are—Flood (75.42%), Rainstorm (21.19%), Windstorm (3.39%), but no report for thunderstorm and drought, while the Punch reported 66.67% of Flood cases, Rainstorm (28.21%), Windstorm (3.84%), thunderstorm (1.28%), but no report for drought. The study concludes that more actions should be taken to sensitize the public about the occurrences of weather events, which is frequent nowadays as evidence of change in the climate.

Journal of Ocean and Climate: Science, Technology and Impacts, 2019

This study examines the influence of intertropical discontinuity movement on seasonality and dist... more This study examines the influence of intertropical discontinuity movement on seasonality and distribution of atmospheric aerosols over Nigeria, using remote sensing approach. The Moderate Resolution Imaging Spectroradiometer (MODIS) Terra aerosol optical depth, wind speed and precipitation/intertropical discontinuity (ITD) dataset were used. Geospatial interpolation model was used to analyse the aerosol seasonal distribution. Correlations analysis was used to evaluate the degree of influence of wind and ITD on the monthly distribution of aerosol. The results show significant variations in monthly mean distributions of aerosol, but the variation is much more extraordinary during Harmattan season than Wet and Dry seasons, with 0.29 ⩽ aerosol optical depth ⩾ 0.46. In other ecological zones, the highest mean aerosol optical depth values were observed in the months of December, January and February with 0.30 ⩽ aerosol optical depth ⩾ 0.60, with highest value in Sahel ecological zone. Gen...

Atmospheric Environment, 2019

The effects of humidity, wind and InterTropical Discontinuity (ITD) movement on seasonal distribu... more The effects of humidity, wind and InterTropical Discontinuity (ITD) movement on seasonal distribution of atmospheric aerosols were assessed over different ecological zones in Nigeria. Satellite-observed aerosol optical depth (AOD), humidity, wind speed, and precipitation/ITD data were used. The Moderate Resolution Imaging Spectroradiometer (MODIS) AOD time series of dataset were used. The MODIS AOD retrievals were at the wavelength of 550 nm and AOD data was re-scaled and subdivided into seasonal and annual distributions to investigate the variations in Aerosol. Kriging spatial interpolation model was used to analyze the aerosol seasonal distribution. Correlations analysis was used to evaluate the degree of influence of humidity, wind speed, and precipitation/ITD on the seasonal distribution of aerosol over six ecological zones; Sahel, Sudan, Guinea, Rainforest, Freshwater, and Mangrove zones in Nigeria. The results show that the AOD over Nigeria is influenced by meteorological factors, but much more influenced by dust source outside the country. AOD appears much more during Harmattan season than Wet and Dry seasons; with AOD >0.46, with considerable concentration in Sahel ecological zone than other ecological zones. The results show a strong significant relationship between aerosol distribution and meteorological, principally humidity with R 2 >0.65 @ p<0.05. The major finding of this study is that seasonal shifts in humidity and the location of the ITD considerably affect not only rainfall distribution, resulting in the Wet and Dry seasons in the study area, but also have significant impacts on atmospheric aerosols distributions. The study reveals that for daily variation of AOD, wind speed, humidity and precipitation as well as high resolution spatial distribution of dust source in and outside the country are important drivers.

Encyclopedia of Information Science and Technology, Third Edition

Resources, Environment and Sustainability

Information Resources Management Journal, 2015

Climate Change Management, 2017

Concerns of climate change impacts and adaptations have continued to receive much attention in bo... more Concerns of climate change impacts and adaptations have continued to receive much attention in both local and international climate change debate. It is now understood that the challenge of climate change cannot be addressed as a standalone issue but within different social, economic, and environmental contexts. It is currently acknowledged that Africa’s contribution to greenhouse gas emissions is insignificant. Except for South Africa, all the countries in Africa contribute below the global average of 3.5 m/ton of CO2 per capita. However, Africa is very vulnerable to climate change given its low capacity to respond and adapt. Furthermore, progress in enhancing better understanding of gender variations on the impacts and adaptation to climate change has been relatively limited. The differentiated impacts of climate change at local level add to the complexities of developing gender sensitive response strategies. With the endorsement of the Paris Climate agreement of 2015, African countries are now gearing up to implement international and national climate change adaptation and mitigation initiatives. While progress has been in developing polices and strategies for climate change adaptation and mitigation, it is critical to ensure that these do not lead to further inequalities during implementation. This chapter, therefore, aims at reviewing climate change related policies and strategies in East and West Africa through a gendered lens. The countries are Kenya, Uganda, Tanzania in East Africa, and Ghana and Nigeria in West Africa. Drawing upon a common framework/guideline, we examined commonality in policies, while recognizing the complexity in the social, economic and ecological systems of each country. The chapter further assesses the importance of integrating and mainstreaming gender into Africa’s national adaptations plans of actions (NAPAs), and Intended Nationally Distributed Contributions (INDCs), and the need for better gender oriented climate change policies, programs and plans.

Scientific Reports

This study aims at assessing the impacts of climate indices on the spatiotemporal distribution of... more This study aims at assessing the impacts of climate indices on the spatiotemporal distribution of malaria and meningitis in Nigeria. The primary focus of the research is to develop an Early Warning System (EWS) for assessing climate variability implications on malaria and meningitis spread in the study area. Both climate and health data were used in the study to determine the relationship between climate variability and the occurrence of malaria and meningitis. The assessment was based on variations in different ecological zones in Nigeria. Two specific sample locations were randomly selected in each ecological zone for the analysis. The climatic data used in this study are dekadal precipitation, minimum and maximum temperature between 2000 and 2018, monthly aerosol optical depth between 2000 and 2018. The results show that temperature is relatively high throughout the year because the country is located in a tropical region. The significant findings of this study are that rainfall ...

The study identified the prevailing hazards in sawmilling industry in southwestern zone, Nigeria,... more The study identified the prevailing hazards in sawmilling industry in southwestern zone, Nigeria, examined the availability and usage of protective equipments by individual workers. It also determined the relationship between personal characteristics of sawmilling workers and use of protective equipments. The study adopted a survey design, 256 workers drawn from 54 sawmills in Ondo, \Ekiti, Oyo and Osun states participated in the study by responding to a questionnaire which elected information on hazards experienced by sawmill workers and efforts put in place by individuals and industry at apprehending such hazards. An observation checklist was also used to assess the availability and usage of protective equipments. Findings revealed that hand (46.9%) and feet (32.4%) injuries were preponderant while eye (12.9%) injury is the least. Abnormal sneezing (14.1%) and continuous body pain (11.4%) were the most peculiar sicknesses of sawmill workers. Appropriate signage were seldom used by...

Weather, Climate, and Society, 2016

The introduction of climate change studies in universities has a fundamental role in helping the ... more The introduction of climate change studies in universities has a fundamental role in helping the general public, especially the next generations, to recognize the global challenges of climate change and to find ways of adapting to the changing climate. This study examined the level of climate change education and perception of Nigerian university graduates. A mixed method approach was used to obtain data relating to perceptions, understanding, and level at which climate change has been taught in Nigerian universities. The results from this study revealed that about 70.7% of university graduates received brief lectures in some special elective courses during their university education, while only 4.1% were taught more than three semesters/terms in some special elective courses. It was also revealed that graduates from departments of environmental sciences have more class experience on climate change than students in the humanities and other faculties. The major finding of this study ...