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 “"La Nina"”.
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Safe Yield for Jointly Operated Reservoir System and Examination of ENSO Impacts
… water source is a basic aspect of water supply planning. In this report, the safe yield is defined as the maximum constant release from a reservoir that is possible during a selected drought period. The yield depends on drought magnitude and duration controlled by nature and ability to manipulate …
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MONITORING OF NORTH AMERICAN SNOW COVER AND ENSO EFFECTS
… (SCA) and to evaluate the effects of El Nino and La Nina on SCA in North America (Excluding Greenland) since 2000/2001 to 2010. The NASA ((National Aeronautics and Space Administration) Earth Observing System Moderate Resolution Imaging Spectroradiometer (MODIS)/Terra satellite provided every …
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Last-saturation applications to the humidity of the subtropical middle troposphere
… associated with the El Nino – Southern Oscillation, over the next century in response to global warming, and over periods of about 2 to 7 days. The latter study on 2 to 7 day variability is a modeling component of a field campaign from October – November, 2008, involving continuous in-situ …
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Machine Learning and Geostatistical Approaches for Discovery of Weather and Climate Events Related to El Niño Phenomena
<p>El Nino and La Nina are worldwide environmental phenomena brought about by repetitive changes in the water temperature of the Pacific Ocean. Even though the El-Nino impact focuses on a smaller area in the Pacific Ocean near the Equator, these developments have global repercussions, where …
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Influence of Climate Variability on Terrestrial Hydrology in North America
… 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 the terrestrial hydrology has a delayed response to the ENSO signal, as compared …
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SENSITIVITY ANALYSIS OF WATER LEVELS AND WAVES IN THE CARMEL RIVER STATE BEACH TO CHANGING BOUNDARY AND MORPHOLOGICAL CONDITIONS IN DELFT3D: CARMEL RIVER LAGOON
… events such as severe storms and cyclones, La Nina, and human interactions can impact these bar-built estuaries and change the operating environment, both on seasonal and yearly timescales. This study uses the numerical model Delft3D to assess sensitivities of the processes driving breaching …
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The Combined Role of ENSO-driven Sea Surface Temperature Variation and Arctic Sea Ice Extent in Defining Climate Conditions in the Southwestern United States
… of sensitivity studies, we investigate the relative influences of and interactions between El Niño-Southern Oscillation (ENSO) related sea surface temperature (SST) variation and varying Arctic SIC in controlling storm tracks, precipitation patterns, and overall climate conditions in the …
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Influence of the Indian Ocean Subtropical Dipole on the Agulhas current
… period. This configuration allows for a relatively accurate spatial and temporal account of the Sea Surface Temperature (SST) and Sea Surface Height (SSH) variability in the Subtropical Indian Ocean (SIO). Simulation and evaluation of SIOD events was achieved through the application of the …
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Statistical modelling and variability of the subtropical front, New Zealand
… narrow zones of intense dynamic activity that play an important role in global ocean-atmosphere interactions. Of particular significance is the circumglobal frontal system of the Southern Ocean where intermediate water masses are formed, heat, salt, nutrients and momentum are redistributed and …
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An investigation into dry and wet spell characteristics over Zambia and into the onset of the rainy season
… decreased agricultural productivity during the last decade in the southern and northern parts of Zambia point to the need for a clearer understanding of these events, their frequencies and their possible connection to large-scale climate modes. Apart from having a high number of dry spells …
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Air-sea interaction at contrasting sites in the eastern tropical Pacific : mesoscale variability and atmospheric convection at 10°N
… differences in the role of ocean dynamics in modulating SST. At a near-equatorial site (3°S), the 1997-1998 El Nino event dominated the evolution of SST and surface heat fluxes, and it is found that wind-driven southward Ekman transport was important in the local transition from El Nino to La Nina …
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Aspects of sea level variability in the southwest Indian Ocean and the east coast of Africa - (latitude 0-35°S and from the coast to 60°E)
… Indian Ocean and the East coast of Africa (Lamu, Mombasa, Zanzibar, Durban, Port La Rue and Port Louis) show variability which are related to global, regional time scales, local weather and climatic changes, oceanographic and hydrological forcing that manifest in both short and long time …
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Wind variability over the southeast Atlantic Ocean
… of low-level winds over the southeast Atlantic Ocean is investigated using high-resolution satellite derived QuikSCA T wind data spanning a 5- year period from August 1999 to July 2004. Wavelet analysis is applied to 20-70 day bandpass filtered zonal and meridional wind time series over …
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Marine weather variability, tropical cyclone prediction and impacts in the Southwest Indian Ocean
… fields are analyzed using model-assimilated data. The evolution of monsoon circulations associated with composite tropical cyclones distinguished by trade is studied. Case study tropical cyclones are investigated and impacts evaluated through comparison of Yea!' and 'model' datasets. …
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Assessing impacts of climate change on the hydrology of the Nile River
The human population living in the Nile basin is projected to double by 2050, approaching one billion. The increase in water demand associated with this burgeoning population fuels an ongoing water conflict between the riparian countries. Uncertainty regarding potential future changes in the flow …
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Impacts of climate changes on the spatiotemporal distribution of precipitation in the western United States
… models on this variability, the influence of large-scale ocean oscillations on heavy precipitation, and the impact of human induced global warming on storm properties.</p> <p>The first study is to examine the performance of current climate models on the simulation of the multi-scale temporal …