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 59 for “"WRF Model"”.
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A numerical study of cropland-atmosphere feedbacks by incorporating a crop growth module in the WRF model
… a feedback loop. A computationally efficient modeling tool has been specifically developed to study these feedbacks. A vegetation module derived from a crop growth model SUCROS has been incorporated in the Weather Research Forecasting (WRF) model. This coupled model has the capability to …
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A flood preparedness tool for Chicago: Weather Research and Forecasting (WRF) model downscaling to improve rainfall forecasts and flood mitigation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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An investigation of the development of supercells in the Indiana and Ohio tornado outbreak of 24 August 2016 using a WRF model simulation
… occurrence and because most convection-allowing models failed to predict it in this case, instead depicting a line of storms moving across the affected area. Three surface boundaries were present prior to and during the event. The first was an outflow boundary traced back to convection in …
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Application of the Weather Research and Forecasting (WRF) Model to Simulate a Squall Line: Implications of Choosing Parameterization Scheme Combinations and Model Initialization Data Sets
… forecasting for public safety. Mesoscale Modeling plays an important role in any forecast of a potential squall line. The focus of this study was to examine the performance of several parameterization scheme combinations in the Weather Research and Forecasting Model version three (WRF) as …
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Orographic Precipitation Over the Island of Oahu
… and precipitation, a linear diagnostic upslope model has been developed to provide a high-resolution picture of terrain induced vertical motion and precipitation over the Island of Oahu. The model is called the Hawaiian Orographic Precipitation (HOP) model. The HOP model demonstrates that …
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Numerical modelling of Tropical Cyclone Dineo and its rainfall impacts over north-eastern South Africa
… from the Weather Research and Forecasting (WRF) model, the Climate Forecast System Reanalyses version 2 (CFSv2) atmospheric reanalysis, satellite derived rainfall and wind data, and station rainfall data are used for this purpose. Tropical Rainfall Measuring Mission (TRMM) rainfall …
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Wind and temperature in a glacierised Himalayan valley, and their controlling mechanisms
… of in-situ measurements and fine-scale numerical modelling studies, important factors influencing melt and precipitation, such as the local valley wind regimes and the lapse rates of near-surface temperatures, are poorly understood in the HKKH. This thesis aims to improve understanding of the …
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Coastal surface circulation of the Gulf of Cadiz from satellite altimetry measurements
… of numerical weather prediction models (NWPM), specifically the Weather Research and Forecasting (WRF) model over the complex area of the Gulf of Cadiz. To assess the applicability of altimetry data for this purpose, the study compares Sentinel-3A/B (S3A/B) WS data with in-situ …
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A numerical simulation of tropical storm Chedza over south-eastern Africa
… using the Weather Research and Forecasting (WRF) model, the Global Forecast System (GFS) atmospheric reanalysis, satellite derived rainfall and wind data, and station rainfall data. Tropical Rainfall Measuring Mission (TRMM) rainfall estimates and rainfall station data indicated that southern …
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Data assimilation and dynamical downscaling of remotely-sensed precipitation and soil moisture from space
… soil moisture observations into physically-based models to produce fine-scale precipitation, soil moisture, and other relevant hydrometeorological variables. This is particularly useful with the active Global Precipitation Measurement and Soil Moisture Active Passive missions. The system consists …
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North American monsoon precipitation and its precursors: processes at the seasonal and diurnal scale
The Weather Research and Forecasting (WRF) model was run at 100~km, 25~km, and 10~km resolution for the 2000 and 2004 monsoon seasons (July-September), a dry year and a wet year. These years were chosen to represent contrasting precipitation outcomes to assure that results were robust across …
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Identifying cold-air damming in the region of the Ozark Plateau
… region. Finally, a numerical analysis using the WRF model to study the effects of terrain height on cold-air damming cases. The objective analysis, results, and conclusions will be showcased including chart analysis, numerical analysis utilizing the Froude number, and WRF output analysis.
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Assimilation of lightning data by nudging tropospheric water vapor and applications to numerical forecasts of convective events
… using the Weather Research and Forecasting (WRF) model. Lightning data are assimilated over the first 3 hours of the forecasts, and the subsequent impact on forecast quality is evaluated. The nudged deterministic simulations for all events produce composite reflectivity fields that are closer …
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A case study of weather research and forecasting model over the Midwest USA
Chemical Transport Models (CTMs) are important tools for air quality research, and it is of the same importance to provide accurate weather information as input data to CTMs. In this thesis, the Weather Research and Forecast (WRF) model was used as an input to a CTM and a sensitivity analysis of 17 …
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Land-atmosphere Exchange and Air Quality during Stable Atmospheric Boundary Layer Events
… capture using numerical weather prediction (NWP) models. The land-atmosphere exchange processes control the energy exchange at the interface of the surface and atmosphere, which impacts the ABL development. Thus, well-represented land-atmosphere exchange in numerical models is a perquisite for …
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Deep Learning Architectures for Improving Weather Research and Forecasting (WRF) Precipitation Estimates and Landslide Susceptibility Mapping: A Case Study of Puerto Rico
… years, the Weather Research and Forecasting (WRF) model has been applied in PR to support daily weather forecasting and hurricane modeling, providing critical insights into atmospheric dynamics in the region. Nonetheless, despite its numerical features, significant uncertainties persist in …
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The assimilation of surface observations in the European Alpine region
… based on the Weather Research and Forecasting (WRF) model for a domain encompassing the European Alps. Surface observations from official observational networks and privately owned Automatic Weather Stations (AWS) are assimilated via the 3DVAR algorithm in this operational chain to obtain …
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Stratospheric Influence On The Breakdown Of A January 2009 Blocking Episode
… were done on Weather Research and Forecasting (WRF) model runs. The WRF was initialized with three different types of initial and boundary conditions from the blocking episode on 10-20 January 2009: a Global Forecast System (GFS) Final Analysis, GFS real-time 180 hour forecast, and modified GFS …
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Source air feeding convection within a nocturnal mesoscale convective system during the evolution from surface-based to elevated convection
… from the Weather Research and Forecasting (WRF) model, and back trajectories produced by the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. This paper describes the evolution of the boundary layer as well as the spatial and temporal progression of the altitude of …
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