William Amponsah

ORCID: 0000-0002-1010-1206
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About
Contact & Profiles
Research Areas
  • Global trade and economics
  • Global Trade and Competitiveness
  • Flood Risk Assessment and Management
  • International Development and Aid
  • Economic Growth and Productivity
  • Hydrology and Watershed Management Studies
  • Hydrology and Drought Analysis
  • Hydrology and Sediment Transport Processes
  • Agricultural Innovations and Practices
  • Irrigation Practices and Water Management
  • Global trade, sustainability, and social impact
  • Agriculture and Rural Development Research
  • Agricultural Economics and Policy
  • Food Security and Health in Diverse Populations
  • Health disparities and outcomes
  • Migration and Labor Dynamics
  • International Business and FDI
  • World Systems and Global Transformations
  • Agricultural risk and resilience
  • Landslides and related hazards
  • Climate variability and models
  • Economic Growth and Development
  • Cocoa and Sweet Potato Agronomy
  • African Botany and Ecology Studies
  • Migration, Ethnicity, and Economy

Kwame Nkrumah University of Science and Technology
2018-2024

Kwame Nkrumah University
2024

West African Science Service Centre on Climate Change and Adapted Land Use
2021-2023

University of Padua
2015-2022

Georgia Southern University
2011-2019

Research Institute for Geo-Hydrological Protection
2015-2018

National Research Council
2016

North Carolina Agricultural and Technical State University
1995-2005

The exceedance probability of extreme daily precipitation is usually quantified assuming asymptotic behaviours. Non-asymptotic statistics, however, would allow us to describe extremes with reduced uncertainty and establish relations between physical processes emerging extremes. These approaches are still mistrusted by part the community as they rely on assumptions tail behaviour distribution. This paper addresses this gap. We use global quality-controlled long rain gauge records show that...

10.1016/j.advwatres.2023.104388 article EN cc-by Advances in Water Resources 2023-01-30

Abstract. This paper describes an integrated, high-resolution dataset of hydro-meteorological variables (rainfall and discharge) concerning a number high-intensity flash floods that occurred in Europe the Mediterranean region from 1991 to 2015. type is rare scientific literature because are typically poorly observed hydrological extremes. Valuable features (hereinafter referred as EuroMedeFF database) include (i) its coverage varied hydro-climatic regions, ranging Continental through Arid...

10.5194/essd-10-1783-2018 article EN cc-by Earth system science data 2018-10-05

10.5325/jafrideve.14.1.0157 article EN Journal of African Development 2012-04-01

Abstract Periodic climate zoning is an essential classification of land cover to account for anthropogenic activities resulting from population increase and urbanization that affect key response parameters. Rainfall, relative humidity (RH), maximum (T max ) minimum temperature min data the Ghana Meteorological Agency were used zone by adopting cluster PCA analysis methods verifying groupings with seasonal trend Tukey Honestly Significance Difference (HSD) analysis. The grouped synoptic...

10.1002/met.2049 article EN cc-by Meteorological Applications 2022-01-01

Abstract A high‐magnitude flash flood, which took place on 25 October 2011 in the Magra River catchment (1717 km 2 ), central‐northern Italy , is used to illustrate some aspects of geomorphic response flood. An overall methodological framework described for using interlinked observations and analyses impacts an extreme event. The following methods were carried out: (i) hydrological hydraulic analysis event; (ii) sediment delivery by event landslide mapping; (iii) identification estimation...

10.1002/esp.3902 article EN Earth Surface Processes and Landforms 2016-01-14

Abstract Postflood indirect peak flow estimates provide key information to advance understanding of flash flood hydrometeorological processes, particularly when observations are combined with simulations from a hydrological model. However, affected by significant uncertainties, which magnified floods associated important geomorphic processes. The main objective this work is the integrated use and model developing testing procedure for assessment impacts–related uncertainties. methodology...

10.1175/jhm-d-16-0081.1 article EN other-oa Journal of Hydrometeorology 2016-10-13

Africa risk achieving its food security target due to the predominance of open field rain-fed production systems, worsening climate change impacts, environmentally unsustainable agronomic practices and low productivity. Large scale adoption new clean technologies can overcome these challenges increase productivity in an sustainable manner. However, large technological faces several research, policy financial which must be identified resolved. Despite introduction greenhouse technology Ghana...

10.1016/j.clet.2021.100384 article EN cc-by-nc-nd Cleaner Engineering and Technology 2021-12-29

Land management practices have the propensity to influence soil infiltration characteristics and predictability of models. This study was conducted evaluate performances Kostiakov model, Philip model Horton in predicting cumulative depth under four tillage systems a sandy clay loam: (i) No Tillage (NT), (ii) Reduced (RT), (iii) Ploughing followed by Harrowing Ridging (PHR), (iv) Deep Ploughing, (DPHR). Using double ring infiltrometer measure rate, observed data fitted models their goodness...

10.1016/j.sciaf.2022.e01318 article EN cc-by-nc-nd Scientific African 2022-08-09

The West African countries share a myriad of challenges, including environmental degradation, desertification, enhanced rainfall variability, unprecedented heat waves, floodings and declining agricultural productivity. accelerated climate change along with other global stressors like population growth rapid urbanization contributes to land chronic poverty, food insecurity, malnutrition.To address these the Climate Services for Risk Reduction in Africa (CS4RRA) was initiated by France Germany...

10.5194/egusphere-egu25-20205 preprint EN 2025-03-15

A successful agricultural system, be it large‐scale or small‐scale, requires adequate irrigation of plants, regardless seasonal changes in rainfall. Unreliable electricity supply tropical regions has necessitated the use alternate power sources for efficient irrigation. Consequently, this study focuses on evaluating performance, energy efficiency, and economic feasibility a solar‐powered photovoltaic (PV) pumping system drip Kaleo, Upper West Region Ghana. Through theory PVsyst simulations,...

10.1155/je/1662260 article EN cc-by Journal of Engineering 2025-01-01

Abstract The extent of information use by farmers for farm management is tracked in terms computer adoption and usefulness, the professional providers services. study based on a survey conducted 1991, North Carolina, as part regional project involving about fourteen states. results revealed low rate surveyed. However, usefulness were explained size, educational attainment income. Also farmers' services, such that provided tax preparers extension agents positively influenced age education level.

10.1017/s1074070800028595 article EN Journal of Agricultural and Applied Economics 1995-12-01

The increasing demand of Ghana's renewable energy sector requires a comprehensive evaluation sky conditions that may be favourable for the efficient harnessing solar resources. However, data such are typically scarce due to instrumentation challenges. Empirical estimates using sunshine duration and cloud cover as input were used evaluate resources' potential at 22 synoptic stations distributed across four climatic zones Ghana (savannah, transition, forest coastal) period 2015 – 2018....

10.1016/j.sciaf.2021.e01061 article EN cc-by Scientific African 2021-11-01

Abstract This study examines the effects that Generalized System of Preferences schemes for developing countries (GSP + ) have on European Union (EU) demand imported cut flowers. Without GSP , a tariff would be applied to flowers from Colombia and Ecuador. Results show Colombian carnation prices negative effect EU flower expenditures, resulting in preferential treatment being mostly trade‐creating. When is Colombia, imports carnations Kenyan roses fell by 7.3% 1.9%, respectively, other...

10.1093/aepp/ppp008 article EN Applied Economic Perspectives and Policy 2010-05-06

The impacts of climate change on food security have increased interest in research and investments irrigation technologies agricultural water management. Agricultural practices such as mulching help to conserve soil moisture by reducing evaporation mitigate the adverse effects stress crops, especially semi-arid environments. This study investigated combined schedules different growth yield two varieties chilli pepper – Legon 18 (Capsicum frutescens L.) Kpakpo shito chinense) Guinea Savannah...

10.1016/j.jafr.2021.100222 article EN cc-by Journal of Agriculture and Food Research 2021-10-19

Cotton is the main cash crop in northern Côte d’Ivoire, where intensive cultivation along with low external inputs has led to a decline yields due soil degradation. The present study aims assess evolution of fertility during 2013 and 2021 periods cotton basin area d’Ivoire. More specifically, (i) identified limiting physico-chemical parameters fertility, (ii) analysed state For this purpose, total 64 samples were taken on same plots 0-20 cm horizon. Chemical analyses laboratory carried out...

10.3389/fsoil.2022.959325 article EN cc-by Frontiers in Soil Science 2022-08-12
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