Christopher U . EZEH - Academia.edu (original) (raw)
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Papers by Christopher U . EZEH
Central European Journal of Geography and Sustainable Development, 2021
Climate change and the associated weather extreme events are a major threat to humanity as it aff... more Climate change and the associated weather extreme events are a major threat to humanity as it affects agriculture and food security. Climate change disaster is on the increase as the global temperature keeps rising. Sub-Saharan Africa is one of the most vulnerable regions to climate change. The coronavirus (COVID-19) pandemic has been complicated by climate change and related extreme events especially with the imposed lockdown which has affected the global economy. The COVID-19 has killed over 4 million persons with the USA, Brazil and India being the worst affected nations. Thus, the multi-hazard scenario presented by extreme events like drought, flood and cyclones this period of the pandemic worsened its spread as it affected social distancing and personal hygiene as many people are crammed in camps and water become scarce for handwashing. It is suggested for countries to strengthen their emergency department by boosting the staff component, provide adequate technical support and ...
The study aims to utilize the NRCS-CN and remote sensing methods in estimating streamflow of Okhu... more The study aims to utilize the NRCS-CN and remote sensing methods in estimating streamflow of Okhuwan and Okhaihe catchments. Remote sensing data, coupled with GIS techniques were used to estimate seasonal rainfall and streamflow. Measured rainfall data was collected from the Nigerian Meteorological Service, while field measurement of streamflow was carried to generate baseline data. Measured rainfall and streamflow were correlated with estimated rainfall and streamflows as indicators of our model effectiveness. The coefficients of determination between estimated rainfall and measure rainfall ranged from 0.67 to 0.77 in Okhuwan basin and from 0.71 to 0.75 in Okhaihe basin, suggesting good correlation in both data as well as suitability of use for streamflow estimation. Stream flow rises sharply with the onset of the rainy season in April and persists till July and August with streamflow, reaching a maximum of 174.0 and 237.3 m 3 /s in Okhuwan and Okhaihe, respectively. Regression residuals were within small range, an indication that measured and estimated data exhibit some closeness particularly in low discharge values. Very strong positive relationship was observed between measured and estimated streamflow. Overall findings showed that in the absence of hydrological information, regional models can serve for data generation.
Climate change and the associated weather extreme events are a major threat to humanity as it aff... more Climate change and the associated weather extreme events are a major threat to humanity as it affects agriculture and food security. Climate change disaster is on the increase as the global temperature keeps rising. Sub-Saharan Africa is one of the most vulnerable regions to climate change. The coronavirus (COVID-19) pandemic has been complicated by climate change and related extreme events especially with the imposed lockdown which has affected the global economy. The COVID-19 has killed over 4 million persons with the USA, Brazil and India being the worst affected nations. Thus, the multi-hazard scenario presented by extreme events like drought, flood and cyclones this period of the pandemic worsened its spread as it affected social distancing and personal hygiene as many people are crammed in camps and water become scarce for handwashing. It is suggested for countries to strengthen their emergency department by boosting the staff component, provide adequate technical support and develop detailed plans for multi-hazard preparedness.
The construction sector is one of the significant users of energy and natural resources. It was e... more The construction sector is one of the significant users of energy and natural resources. It was estimated that the sector uses nearly 40% of the total raw-material inflow to the global economy each year. Based on this fact, the construction sector is an essential contributor to environmental pollution and poses challenges in meeting sustainable development goals. This paper discusses the building assessment tools or models used to assess whether a building meets environmental standards with the view to explore the applications of these tools and their benefits. The paper notes that the environmental assessment models and the assessment itself are worthwhile as it offers several benefits to the society and environment, especially the first among them, the Building Research Establishment Environmental Assessment Method (BREEAM) in the UK. The BREEAM model has created awareness among the stakeholders and has achieved high levels of success. Over 1000 buildings have been assessed in the UK and over 1800 individuals involved as assessors. Thus, it creates jobs in addition to protecting the environment. Mitigation measures are integrated into the certification. It is cost-effective, especially in the long run and more environmentally friendly, unlike the conventional ones. Moreover, efforts should be geared towards harmonising the rating scales and standards across continents or climate regions.
The COVID-19 pandemic currently ravaging the world and its economy has claimed the lives of over ... more The COVID-19 pandemic currently ravaging the world and its economy has claimed the lives of over 360,000<br> with over 5 million reported cases globally. It reportedly originated from man's encroachment into<br> biodiversity habitat like other similar pandemics such as Ebola, SARS. The pandemic has led to the<br> imposition of total lockdown over many cities across the world. The imposition has led to improved air<br> quality such as the decline in N2O, CO2 and noise pollution across the world. The Coronavirus disease<br> (COVID-19) has vindicated the air pollution scientists and conservation advocates that anthropogenic<br> activities drive changes in the global environment with the attendant health risks. It has also revealed the<br> vulnerabilities of the world population to health care, economy and food supply. Again, the virus has affected<br> Africa so much and has revealed that intervention is required in many socio-economic...
Central European Journal of Geography and Sustainable Development, 2021
Climate change and the associated weather extreme events are a major threat to humanity as it aff... more Climate change and the associated weather extreme events are a major threat to humanity as it affects agriculture and food security. Climate change disaster is on the increase as the global temperature keeps rising. Sub-Saharan Africa is one of the most vulnerable regions to climate change. The coronavirus (COVID-19) pandemic has been complicated by climate change and related extreme events especially with the imposed lockdown which has affected the global economy. The COVID-19 has killed over 4 million persons with the USA, Brazil and India being the worst affected nations. Thus, the multi-hazard scenario presented by extreme events like drought, flood and cyclones this period of the pandemic worsened its spread as it affected social distancing and personal hygiene as many people are crammed in camps and water become scarce for handwashing. It is suggested for countries to strengthen their emergency department by boosting the staff component, provide adequate technical support and ...
The study aims to utilize the NRCS-CN and remote sensing methods in estimating streamflow of Okhu... more The study aims to utilize the NRCS-CN and remote sensing methods in estimating streamflow of Okhuwan and Okhaihe catchments. Remote sensing data, coupled with GIS techniques were used to estimate seasonal rainfall and streamflow. Measured rainfall data was collected from the Nigerian Meteorological Service, while field measurement of streamflow was carried to generate baseline data. Measured rainfall and streamflow were correlated with estimated rainfall and streamflows as indicators of our model effectiveness. The coefficients of determination between estimated rainfall and measure rainfall ranged from 0.67 to 0.77 in Okhuwan basin and from 0.71 to 0.75 in Okhaihe basin, suggesting good correlation in both data as well as suitability of use for streamflow estimation. Stream flow rises sharply with the onset of the rainy season in April and persists till July and August with streamflow, reaching a maximum of 174.0 and 237.3 m 3 /s in Okhuwan and Okhaihe, respectively. Regression residuals were within small range, an indication that measured and estimated data exhibit some closeness particularly in low discharge values. Very strong positive relationship was observed between measured and estimated streamflow. Overall findings showed that in the absence of hydrological information, regional models can serve for data generation.
Climate change and the associated weather extreme events are a major threat to humanity as it aff... more Climate change and the associated weather extreme events are a major threat to humanity as it affects agriculture and food security. Climate change disaster is on the increase as the global temperature keeps rising. Sub-Saharan Africa is one of the most vulnerable regions to climate change. The coronavirus (COVID-19) pandemic has been complicated by climate change and related extreme events especially with the imposed lockdown which has affected the global economy. The COVID-19 has killed over 4 million persons with the USA, Brazil and India being the worst affected nations. Thus, the multi-hazard scenario presented by extreme events like drought, flood and cyclones this period of the pandemic worsened its spread as it affected social distancing and personal hygiene as many people are crammed in camps and water become scarce for handwashing. It is suggested for countries to strengthen their emergency department by boosting the staff component, provide adequate technical support and develop detailed plans for multi-hazard preparedness.
The construction sector is one of the significant users of energy and natural resources. It was e... more The construction sector is one of the significant users of energy and natural resources. It was estimated that the sector uses nearly 40% of the total raw-material inflow to the global economy each year. Based on this fact, the construction sector is an essential contributor to environmental pollution and poses challenges in meeting sustainable development goals. This paper discusses the building assessment tools or models used to assess whether a building meets environmental standards with the view to explore the applications of these tools and their benefits. The paper notes that the environmental assessment models and the assessment itself are worthwhile as it offers several benefits to the society and environment, especially the first among them, the Building Research Establishment Environmental Assessment Method (BREEAM) in the UK. The BREEAM model has created awareness among the stakeholders and has achieved high levels of success. Over 1000 buildings have been assessed in the UK and over 1800 individuals involved as assessors. Thus, it creates jobs in addition to protecting the environment. Mitigation measures are integrated into the certification. It is cost-effective, especially in the long run and more environmentally friendly, unlike the conventional ones. Moreover, efforts should be geared towards harmonising the rating scales and standards across continents or climate regions.
The COVID-19 pandemic currently ravaging the world and its economy has claimed the lives of over ... more The COVID-19 pandemic currently ravaging the world and its economy has claimed the lives of over 360,000<br> with over 5 million reported cases globally. It reportedly originated from man's encroachment into<br> biodiversity habitat like other similar pandemics such as Ebola, SARS. The pandemic has led to the<br> imposition of total lockdown over many cities across the world. The imposition has led to improved air<br> quality such as the decline in N2O, CO2 and noise pollution across the world. The Coronavirus disease<br> (COVID-19) has vindicated the air pollution scientists and conservation advocates that anthropogenic<br> activities drive changes in the global environment with the attendant health risks. It has also revealed the<br> vulnerabilities of the world population to health care, economy and food supply. Again, the virus has affected<br> Africa so much and has revealed that intervention is required in many socio-economic...