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 20 of 31 for “"climate variations"”.
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The influence of volcanic stratospheric aerosols on interannual global climate variations
A qualitative physical mechanism has been proposed to explain the forcing of the El Nino/Southern Oscillation (ENSO) by low-latitude volcanic stratospheric aerosols (Handler 1989). This mechanism is based on the normal global annual cycle resulting from the normal annual cycle in the distribution …
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Biogeomorphology and soil geomorphology of small semiarid basins, northeastern Arizona : influences of topoclimate and climate variations
… cemented sandstones are sensitive to Holocene climate changes on millennial to decadal scales. It is hypothesized that these climate changes affect processes of weathering, erosion and plant community establishment on hillslopes in this semiarid environment. In small basins formed at the base …
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New constraints on the late Cenozoic incision history of the New River, Virginia
… the Appalachians as a response to late Cenozoic climate variations. Active erosion features on resistant bedrock that floors the river at prominent knickpoints demonstrate that the river is currently incising toward base level. However, large packages of alluvial fill and fluvial terraces cut …
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Influence of Climate Variability on Terrestrial Hydrology in North America
To study the impacts of climate variations on the terrestrial hydrologic processes, ERA-15 dataset (1979--1993) is used to drive LABs for all basins over North America. The anomalies of the model forcing and output are correlated with climate anomalies, such as ENSO, NAO and PNA. It is found that …
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Terrestrial Water Storage Change Over Dryland Regions Using Observational Data and Model Simulations
… water demand and supply, being exacerbated by climate change and human water withdrawal. Water resources are critically important for both human societies and ecosystems to function. Therefore, quantifying water availability and changes is essential for dryland research, water management, and …
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Long-range statistical forecasting of Korean summer precipitation
… KSP research and on the relationship of KSP to climate variations. Second, we explored interannual variability of KSP using composite and correlation analyses. We found that circulation anomalies in the spring prior to the monsoon in the tropical northwest Pacific alter sea surface temperatures …
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A comparison of ground source heat pumps and micro-combined heat and power as residential greenhouse gas reduction strategies
… and electric demands as well as regional climate factors. The purpose of this study is to make a consistent, realistic comparison of these greenhouse gas reduction strategies as applied to typical single-family residential homes across the United States. The study identifies both the …
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A landscape in transition : architecture for an extreme climatic condition : accommodating the informal within a flood-prone area
… There are indiations that South A frica's climate is becoming increasingly variable (Napier & Rubin; 2002). Climate change increases the uncertainty fa.ced by vulnerable communities through a widening range of future climate variations and ha.z:trds. This is not a hypothetic:tl risk to be …
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The Study of the Indian Ocean Response to Climatic Events Using Satellite Observations and Model Simulations
… interactions of intraseasonal and interannual climate variability with surface ocean properties is an active area of research in the Indian Ocean region. Understanding how climate variations impact basin-wide salinity patterns is an important step in understanding how this variable impacts …
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Economic impacts and analysis methods of extreme precipitation estimates for eastern Colorado
… runoff versus extreme precipitation events and climate variations were examined. Four methods for estimating extreme precipitation events were evaluated; the traditional PMP, the paleogeological, the cloud/mesoscale dynamic model, and the statistical approaches. A collection of approaches were …
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Vegetation Variability and Its Hydro-Climatologic Dependence
… soil properties, vegetation type, and climate variations (e.g., the El Nino Southern Oscillation [ENSO]), and to synthesize this understanding for future predictive modelling applications. The initial phase of this study examines how topographic variability moderates the climatologic …
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Testing the late-Holocene climate signal from ombrotrophic bogs in southernmost Chile and the Falkland Islands: a multi-proxy, multi-profile and multi-site approach
… (SWW), offer the potential of reliable palaeoclimate archives. This investigation aimed to test the late-Holocene climate signal related to variability of the SWW. Three sites were investigated: San Juan and Karukinka bog, southernmost Chile and San Carlos, a Sphagnum dominated bog, discovered …
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Climate change impacts and farmers' responses in Chilanga District, Zambia
Climate change and variability are predicted to threaten agricultural production in Southern Africa. For example, Zambia's agriculture remains vulnerable to climate change and variability due to the small-scale farmers' dependence on rain-fed agriculture. Some studies in Zambia have shown the …
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ITIKI: Bridge between African indigenous knowledge and modern science on drought prediction
… The main form of forecasts is the Seasonal Climate Forecasts whose utilisation by small-scale farmers is below par; they instead consult their Indigenous Knowledge Forecasts. This is partly because the earlier are too supply-driven, too ""coarse"" to have meaning at the local level and their …
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Wetland model in an earth systems modeling framework for regional environmental policy analysis
… the relationship of physical systems to climate variations. Wetlands play an important role in the storage and regulation of the global water budget so including them in a land water cycle model is found to be necessary in balancing the regional water budgets of simulated river basins. …
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Impacts of Land Use and Climate Changes on Hydrological Processes in South Dakota Watersheds
<p>This study aims to evaluate the impacts of climate and land use change on the hydrology of South Dakota’s watersheds using the Soil and Water Assessment Tool (SWAT). The study analyzed the hydrologic impacts of climate and land use changes in two ways. The first aspect consists of characterizing …
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A agricultura familiar do Seridó potiguar: vulnerabilidade, percepção e adaptação às mudanças climáticas
… has always been vulnerable to the climatic variations e its consequences. The effects of the semiarid climate, together with other biophysics, social and political-economic factors, impair the agricultural production, generating a situation of food insecurity and poverty in the rural areas. …
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The Role of Kelvin Waves on the Circulation and Salt Transport Variability in the Coastal Bay of Bengal
… circulation dynamics to the regional and global climate has been increasingly recognized largely due to improved ocean observations in the last few decades. Recent observations indicate that the Indian Ocean directly influences large-scale climate variations, such as El Niño. A key component for …
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Keeping it cool: mammal responses to microclimatic variation in disturbed Indonesian lowland forest.
… of deforestation, forest fragmentation and climate change will push many mammal species towards extinction, unless appropriate long-term conservation measures are implemented. While most mammal conservation projects focus on protecting remaining primary habitat, it is also important to …
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Streamflow Generation in alpine Catchments: The role of hydrological and geochemical information
… and may suer significant changes because of climate variations. Thus, identifying the main mechanisms controlling streamflow generation and understanding the nature and variability of streamflow in Alpine streams, represent a very important contribution towards a better understanding of these …
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