Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"drought risk"”.
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THE VARIABILITY OF DROUGHT DYNAMICS IN THE SOUTHWEST UNITED STATES AND AN ANALYSIS OF DROUGHT RISK IN THE NORTHEASTERN UNITED STATES
… Toby Ault as a member of the Emergent Climate Risk Lab. Herein, I used a variety of tools to analyze the variability of hydroclimate teleconnections of the southwest United States (SWUS) to El Niño Southern Oscillation (ENSO), which included observations, paleoclimate records, general …
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Vulnerability to Drought Risk and Famine: Local Responses and External Interventions among the Afar of Ethiopia, a study on the Aghini Pastoral Community
In East African countries drought-related famine has been a number one risk. Ethiopia is among those countries that are repeatedly stricken by recurrent famine. Agricultural and pastoral households have increasingly become vulnerable to famine. The successive Ethiopian governments attributed the …
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Understanding drought propagation and its implications for drought management
Droughts have been recognized as one of the most complex natural disasters, especially because they involve interactions between numerous climatological, hydrological and human processes. During a drought event, deficits in precipitation gradually translate into deficits in soil moisture, …
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Climate finance instruments and Kenyan agriculture
… include increased frequency of flooding and drought. These lead to loss of soil and crucial soil nutrients which affects agricultural production leading to food insecurity, increased poverty, and may have a significant impact on the quality of life. The majority of Africa’s population are …
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Machine Learning and Geostatistical Approaches for Discovery of Weather and Climate Events Related to El Niño Phenomena
… are influenced across the globe, causing droughts and floods simultaneously. In this dissertation, we first derived a drought vulnerability index for the Nile basin, identifying regions with high and low drought risk under ENSO conditions. Next, we evaluated the coherence and periodicity …
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Three Essays on Measuring the Ex-ante Economic Impacts of Agriculture Technology Innovations
… 'Ex-Ante Analysis of the Benefits of Transgenic Drought Tolerance Research on Cereal Crops in Low-Income Countries' develops a framework to examine the ex-ante benefits of transgenic research on drought in eight low-income countries, including the benefits to producers and consumers from farm …
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An evaluation of a data-driven approach to regional scale surface runoff modelling
… fields, such as agriculture planning, flood and drought risk assessment, and water resource management. In this study, we built a data-driven model that can reproduce monthly surface runoff at a 4-km grid network covering 13 watersheds in the Chesapeake Bay area. We used a random forest algorithm …
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Evaluating temperature and precipitation extremes under 1.5°C and 2.0°C warming above pre-industrial levels: Botswana case study
… expected to realise the greatest increases; (ii) drought related indices are also significantly different, and suggest progressively increasing drought risk with shortened rainfall seasons especially in northern Botswana; and (iii) heavy rainfall indices are likely to increase, but are not …
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Modelling the economic and social consequences of drought under future projections of climate change
Drought events and their consequences pose a considerable problem for governments, businesses and individuals. Superimposed on this risk is the danger of future anthropogenic climate change. Climate models are increasingly being used to understand how climate change may affect future drought …
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City-level law and governance for water security in South Africa
… of urban water services, exacerbating flood and drought risks, and compromising the health of aquatic ecosystems. Hence, cities are expected to engage in proactive planning, preparation, and response measures to address a multitude of threats and challenges to water, to be resilient, sustainable, …
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Detecting trend and abrupt changes in mean and extreme climate variables and assessing the impacts on agriculture
… extreme weather events (e.g., floods and droughts) have become a serious concern for agriculture, as well as human life and natural environment. Understanding how the change has affected crop yield to date will provide insights on its future possible impacts on food availability. The …
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Methodology for development of drought Severity-Duration-Frequency (SDF) Curves
Drought monitoring and early warning are essential elements impacting drought sensitive sectors such as primary production, industrial and consumptive water users. A quantitative estimate of the probability of occurrence and the anticipated severity of drought is crucial for the development of …
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Mitigating risk of weather variability to agriculture through improved field workability predictions
Evolving weather-related risks, driven by climate change, will impose challenges on agricultural production systems at a global scale. However, the spatial heterogeneity of cropping practices, current climate, projected climate changes, and environmental factors (such as soil) will influence these …
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MODELLING DRY AND WET EXTREMES OVER THE CANADIAN PRAIRIE PROVINCES BASED ON THE DYNAMICAL DOWNSCALING AND MULTIVARIATE FREQUENCY ANALYSIS APPROACHES
… by highly variable hydroclimate, with recurrent droughts and floods and localized summer convective storm activity often resulting in heavy precipitation events and thus poses many challenges for water managers. At first, the Saskatchewan River Basin, the largest river in the study area, was …
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Four essays on capital structure dynamics: special reference to level of leverage, state ownership, corporate governance and climate risk
… of calculating SOA and the new determinant (drought) of SOA. The remaining two essays concentrate on Vietnam, an emerging market and a transitional economy. Nguyen, Locke, and Reddy (2015), after considering the relationship between corporate governance and firm performance in Vietnam, reveal …