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 87 for “"Global Climate Models"”.
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A mode-based metric for evaluating global climate models
Climate models are software tools that simulate the climate system and require evaluation to assess their skill, guide their development, and assist in selecting model simulations from among the many different ones available. There are a variety of methods and approaches that can be used to …
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On the use of multivariate statistics to validate global climate models
… and compare those to the counterpart modes in a Global Climate Model (GCM). As a means to accomplish this, a multivariate statistical technique introduced for the first time to the atmospheric sciences, orthogonal Procrustes Target Analysis (PTA) was applied. A four dimensional analysis of the …
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Development of a quantile-based approach to statistically downscale global climate models
Large-scale general circulation models give us an idea of how the climate may possibly develop over the future century. These models generally simulate the large-scale and global mean climate well; however, when applied to localized regions their output does not provide sufficient detail to perform …
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The climatic significance of tropical forest edges and their representation in global climate models
An emerging theme in global climate modelling is whether land covers created in the clearance of tropical humid forests influence water exchange between remnant forest patches and the atmosphere, and, if so, how this affects regional and global water exchange. Fieldwork presented in this thesis …
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Turbulence in the sea ice impacted Southern Ocean and its implications for primary production and carbon export
… the surface water properties therefore have global consequences, as they set the properties of downwelling intermediate waters that enter the upper branch of the global thermohaline circulation. The region hosts some of the largest uncertainties in global climate models. The reason for this …
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Evaluating CMIP6 Models in Simulating Southwest Indian Ocean Tropical Cyclone Activity (1979–2014): Comparison with ERA-5 Reanalysis
… This study investigates the performance of ten global climate models in simulating the characteristics of Southwest Indian Ocean (SWIO) tropical cyclone activities. The model’s simulation was performed for 35 years (1979-2014) and validated against the ERA-5 reanalysis data. The study also …
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Area-average representation of land surface covers in large atmospheric models based on remotely sensed land surface cover data
… of heterogeneous continental surfaces in global climate models. The problem it addressed was that current understanding of soil-vegetation-atmosphere interactions is considered only to be relevant to small plots of uniform vegetation with dimensions of the order 10-1000 m but, in order to …
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Investigation of a gravity wave ducting event in the upper mesosphere
… net drag, heating, and cooling impact the global circulation of the mean atmospheric flow. Consequently, the parameterization of GWs in global climate models is a key focus of contemporary research on the MLT region. The physical processes associated with GWs must be understood in addition …
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Predicting Climate Change in Big Bend National Park, Texas
… downscaling to improve the resolution of global climate model predictions of temperature and precipitation over the next 100 years in Big Bend National Park, Texas. The method is an adaptation of climate prediction by model statistics. I use historical data from 12 weather stations and the …
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Application of Neural Network Techniques to Downscale Precipitation
Global climate change is a major area of concern to public and climate researchers. It impacts flooding, crop yields, water based diseases, etc. Significant effort has gone into developing climate models. Global climate models use a coarse grid of 300x300 Km2, while the resolution of interest for …
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A Fiber-Based Lidar System for Atmospheric Water Vapor Measurement
… compares the results to expected values based on models. A second-stage prototype system is then presented. Atmospheric measurements with the enhanced prototype are compared to modeled values, and a detailed error analysis for the enhanced version of the system prototype is given. Recommendations …
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The flow and variability of sea-ice in the Canadian Arctic Archipelago: modelling the past (1950-2004) and the future (2041-2060)
… Arctic Archipelago (CAA) is expected. As most global climate models do not resolve the CAA region, a fine-resolution regional model is developed to provide a sense of possible changes in the CAA sea-ice. This ice-ocean coupled model is forced with atmospheric data for two time-periods. Results …
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Irrigation Water Requirements under Climate Change and Drought Events in Saskatchewan,
This research considers the effects of climate change projected by global climate models (GCMs) on irrigated agriculture and water supply in Saskatchewan using 27 different combinations of GCMs, special reports on emissions scenarios (SRES), and time periods (2020s, 2050s, 2080s). Future drought …
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Climate Drivers Compound Under Climate Change
Seasonal climate variability in south-east Australia is influenced by three major climate drivers; the El Niño-Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD) and the Southern Annular Mode (SAM). Each climate driver has impacts upon seasonal rainfall, temperature and fire risk. In …
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Climate Drivers Compound Under Climate Change
Seasonal climate variability in south-east Australia is influenced by three major climate drivers; the El Niño-Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD) and the Southern Annular Mode (SAM). Each climate driver has impacts upon seasonal rainfall, temperature and fire risk. In …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC …
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Exploring the climate change refugia potential of equatorial Pacific coral reefs
Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate warming locally and modulate the intensity of coral bleaching. However, EUC …
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Assessment of Convectively Generated Tropical Cirrus in Global Storm-Resolving Models
… tropical tropopause layer (TTL) in- fluence the climate by altering the top-of-atmosphere radiation balance and stratospheric water vapor budget. These cirrus are often associated with deep convection, which global climate models must parameterize and struggle to accurately simulate. By comparing …
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The Effects of Anthropogenic Warming on Changes of Extreme Precipitation Over Kansas City Metropolitan Area
When the Intergovernmental Panel on Climate Change (IPCC) Special Report Global Warming of 1.5°C was released in 2018 it postulated about the devastating effects of a 2° C increase in global temperature, based on projections of coarse resolution global climate models (GCMs). While GCMs are useful …
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Water Demand, Adaptive Capacity, and Drought: an Analysis of the Upper Klamath Basin, Oregon and California
… demand and scarcity issues are an issue of global concern, in particular for the American West as global climate models suggest precipitation regime changes and an increase of drought. This research conducts a case-study of the Upper Klamath Basin, located in south-central Oregon and …
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