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.
Results
Showing 1 to 20 of 47 for “"model intercomparison"”.
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Real-time flood forecasting model intercomparison and parameter updating rain gauge and weather radar data
… the development of real-time flood forecasting models at selected catchments in the three countries, using rain gauge and radar derived rainfall estimates and time-series analysis. An extended inter-comparison of real-time flood forecasting models has been carried out and an attempt has been …
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Development of sea ice diagnostic tools for high-resolution simulations of the Climate Model Intercomparison Project (HiResMIP)
… resolution plays in the performance of climate modelling, this minor-dissertation describes the development and initial testing of a High-Resolution Sea Ice Diagnostics Toolset. This is designed to evaluate the influence increased horizontal resolution has on the ability of high-resolution …
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Evaluating the relationship between the temperature response to volcanic aerosols and climate sensitivity
… climate sensitivity is correlated across Coupled Model Intercomparison Project Phase 3 (CMIP3) models to the ratio of surface temperature response to top-of-atmosphere shortwave radiation response following Pinatubo, when excluding one anomalous model. In this thesis, Bender et al.'s calculation …
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Antarctic sea-ice extent, Southern hemisphere circulation and South African rainfall
… response of an atmospheric general circulation model (OCM) to a reduction in Antarctic sea-ice extent during summer and winter, with emphasis on non-polar and southern African climates. Following an evaluation of the OCM, the control and perturbation simulations are analysed. The controls are …
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Dependence of tropical precipitation on changes in cross-equatorial atmosphere and ocean heat transport in global warming simulations
… heat transport. In this study, we use Coupled Model Intercomparison (CMIP) output to determine the thermal forcings that result in hemispheric heating asymmetries and induce an ITCZ shift in the 21st century. Using a fully coupled model we also determine the atmosphere will transport most of …
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IMPLEMENTATION OF A VERTICALLY INTEGRATED ICE SHEET MOMENTUM BALANCE MODEL
A new high-fidelity ice sheet momentum balance model meant for inclusion in the Glimmer community ice-sheet model is presented. As a component of the Community Earth Systems Model the newly developed momentum balance will directly benefit from ice/ocean and ice/atmosphere coupling efforts occurring …
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IMPLEMENTATION OF A VERTICALLY INTEGRATED ICE SHEET MOMENTUM BALANCE MODEL
A new high-fidelity ice sheet momentum balance model meant for inclusion in the Glimmer community ice-sheet model is presented. As a component of the Community Earth Systems Model the newly developed momentum balance will directly benefit from ice/ocean and ice/atmosphere coupling efforts occurring …
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The impacts of Amazon deforestation on Pacific climate
… and these fields are seen in observations and model data. Correlations were calculated using data from observations, reanalysis data, two models under the Coupled Model Intercomparison Project/Atmospheric Model Intercomparison Project (CMIP5/AMIP), and an AMIP run with the model used in this …
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Stratospheric ozone and Southern Hemisphere climate change : impacts and robustness in CMIP5 models
… This dissertation investigates how well the models from the most recent Coupled Model Intercomparison Project (CMIP5) represent these changes and searches for consistencies and differences across the models. Comparisons are made with the reanalysis data set ERA-Interim. It is found that the …
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Changes in atmospheric eddy length with the seasonal cycle and global warming
… of eddy length in the NCEP2 reanalysis (a model-data synthesis that reconstructs past atmospheric circulation) and general circulation models (GCMs) from the Coupled Model Intercomparison Project phase 3. Eddy lengths are compared to computed values of the Rossby radius and the Rhines …
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Antarctic Bottom Water in CMIP5 models : characteristics, formation, evolution
… sea level, yet previous generations of climate models failed to represent AABW accurately. Present-day biases in AABW potential temperature, salinity and density are assessed for models from the Coupled Model Intercomparison Project phase 5 (CMIP5). CMIP5 models either have inaccurate bottom …
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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
… (ETCCDI), derived from fifth version of Coupled Model Intercomparison Project (CMIP5) projections over Botswana, a country highly vulnerable to the impacts of climate change. Results indicate that (i) projected changes in temperature extremes are significantly different at the three levels of …
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Internal and structural variability in global urban climate projections in CMIP6
… that are specific to built landscapes. A robust modeling framework to address uncertainty in local- or regional-scale climate change should include the roles of internal variability, model parametric and structural uncertainty, and scenario uncertainty. Quantitative attributions of the structure …
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Assessment of the impacts of climate change, land cover transition, and internal climate variability on the hydrology of a forested watershed
… small lakes. A semi-distributed hydrological model, based on the Raven hydrological framework, is calibrated and validated using ground-based observations for 1981-2001 and 2002-2011, respectively. Eight downscaled General Circulation Models (GCMs) that participated in the Coupled Model …
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Spatio-Temporal Dynamics Of Phytoplankton Biomass From Ocean Color Remote Sensing And Cmip5 Model Suites
… in ecological modules incorporated in climate models. While climate models are projecting relatively clear trends in ocean ecology over the next century, distinguishing between interannual variability and ocean biology trends from satellite observations is difficult. Short record length, …
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Development and Stakeholder-informed Evaluation of Global Climate Temperature Response Functions
Modern climate models allow for accurate simulation over a range of future climate scenarios. However, there exists a significant gap in terms of speed, accuracy, and overall intuitiveness between the stateof-the-art and more generally accessible tools, especially in tools used for climate …
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Soil Moisture-driven Drought Evaluation under Present and Future Conditions
… drought conditions using a variety of hydrologic modeling approaches include short-term drought forecasting, long-term drought projection, and a coupled surface-groundwater dynamic drought assessment. The economic impacts of drought are also explored through a linked economic impact model. Study …
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Climate change and global crop yield: impacts, uncertainties and adaptation
… uncertainties related to the choice of crop modelling approach and; (4) simplified the representation of farming adaptation strategies. This research aimed to assess climate change impacts on global crop yield that accounts for the knowledge gaps listed above, based on the further development …
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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
… paleoclimate records, general circulation models, and statistical models. To categorize the hydroclimate of the SWUS, we used the Palmer Drought Severity Index (PDSI). This analysis investigated the inherent century-scale teleconnection variability between PDSI in the SWUS and the Niño3.4 …
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Climate Drivers Compound Under Climate Change
… publicly available output from global climate models is used to explore how anthropogenic climate change may alter the frequencies these climate drivers compound in the future. Results from 35 global climate models submitted to the Coupled Model Intercomparison Project phase 6, and from the …
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