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 90 for “"weather stations"”.
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Comparative analysis of Machine Learning Algorithms for Estimating Global Solar Radiation at Selected Weather Stations in Vhembe District Municipality
… is to estimate the global solar radiation of two stations namely, Mu tale and Messina found in Vhembe District, Limpopo Province, South Africa. Four different methods (Random forest(RF) regression, K-nearest neighour (K-NN), Support Vector Ma chines(SVM) and Extreme Gradient Boosting …
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Improvement of pavement mechanistic-empirical design (PMED) virtual weather station interpolation model using radial basis function - Tennessee case study
… Design (PMED) allows users to create Virtual Weather Stations (VWS) in locations where no nearby weather stations exist. VWS quality has faced several critiques through its implementations in PMED. PMED adopts the gravity model in its VWS creation process. MATLAB codes were used in comparing …
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The Effects of the Non-Climatic Inhomogeneities in Surface Weather Station Records on Long Term Trends in Canadian Fire Weather Index System Codes.
… proliferation of studies analyzing the past fire weather trends using daily surface weather stations data. However, not all studies take account of such data's inherent inconsistencies (inhomogeneities) from non-climatic influences. This study shows their influence on the linear trends in the …
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Analysis of variable scatterometer wind fields in the Benguela upwelling region
… between data from two automatic coastal weather stations and measurements obtained by the NASA scatterometer (NSCAT) for the period 1 December 1996 to 31 May 1997 yielded a correlation coefficient of 70%.
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Changes in rainfall seasonality in the Western Cape, South Africa: an exploration of methods for determining the start and end of the rainfall season
… in seasonality in rainfall for various groups of weather stations in the Western Cape area. Weather stations with similar seasonal patterns are firstly grouped together using certain clustering algorithms. The start and end of the rainfall season dates for the different groups of weather stations …
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Observed trends in daily extreme temperature indices (percentiles) over the Western and Eastern Cape of South Africa for the period 1960 to 2005
… this thesis are from 12 high quality observing weather stations over the two regions.
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Opportunities and Challenges in Identification and Classification of Heat Stress Risk Based on Analysis of Individual and Neighborhood Level Factors
… Extreme heat is the No.1 deadliest form of weather on average in 1990-2019 in the US according to the National Weather Service. Measurements and forecasts made at regional weather stations are a common data source of Heatwave Early Warning Systems. However, regional weather stations provide …
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Predicting Climate Change in Big Bend National Park, Texas
… model statistics. I use historical data from 12 weather stations and the NCAR-NCAR reanalysis to build a model of the relationship between the surface and upper air, then use this model to downscale upper air output from several global climate models for several greenhouse gas emission scenarios. …
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Mesoscale temperature estimates for Western Virginia
Maximum and minimum temperature for 14 stations in Western Virginia were used to develop a temperature estimation model. Locational data such as the UTM coordinates, elevation, aspect, distance from West Virginia and the distance to the coast and certain transformations of these variables were used …
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Wind power applications to groundwater remediation
… site. Wind velocity data collected at nearby weather stations associated with a regional climate database were used to predict the wind velocity at the wind turbine and the associated wind turbine performance. The wind turbine was operated in both grid inter-tie mode and off-grid mode. …
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Urban scale phenomena and boundary layer processes in mountain valleys
… adopted as a representative case study of urban weather and climate phenomena in a mid-sized city lying in a mountain valley, is investigated using different methods and on different spatial scales. First the intensity of the Urban Heat Island (UHI) is analyzed evaluating the differences between …
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Backcasting and Forecasting Boreal Wetland Water Balances Using Weather Data in Reclaimed Landscapes
… by water balances reflecting prevailing weather conditions. Precipitation and evapotranspiration data that have been collected from six weather stations in three reclaimed landscapes were used to backcast and forecast meteorological trends. An autoregressive integrated moving average …
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Advancing Sustainable Grape Downy Mildew Management: Biopesticide Trials and Risk Assessment System
… mildew forecasting system using a model-based weather data approach that does not rely on physical weather stations. We also collected infection data from the field between 2022 and 2025 to evaluate two types of models we developed. The mechanistic model, which combined two published empirical …
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Multivariate Extreme Value Theory with an application to climate data in the Western Cape Province
An understanding of past and current weather conditions can aid in identifying trends and changes that have occurred in weather patterns. This is particularly important as certain weather conditions can have both a positive and a negative impact on various activities in any region. Together with an …
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CHANGES IN FIRE SEASON PRECIPITATION IN IDAHO AND MONTANA FROM 1982-2006
… data obtained from seventy-six Remote Automated Weather Stations (RAWS) across Idaho and Montana for the period 1982 to 2006. Missing and erroneous values from each station were corrected with gridded data from the North American Regional Reanalysis (NARR), creating temporally consistent, …
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CHANGES IN FIRE SEASON PRECIPITATION IN IDAHO AND MONTANA FROM 1982-2006
… data obtained from seventy-six Remote Automated Weather Stations (RAWS) across Idaho and Montana for the period 1982 to 2006. Missing and erroneous values from each station were corrected with gridded data from the North American Regional Reanalysis (NARR), creating temporally consistent, …
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Cross Environmental Variable Synchrony
… for many population systems using 100-year weather data from weather stations in North America to understanding the potential impacts of CEV synchrony. The result of our findings provided the first step toward understanding what impacts CEV synchrony may have on population synchrony in real …
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A site-specific rainfall model for Western Virginia ecosystems
… for western Virginia using data from 15 weather stations in that area. This system, called VARAINS for VirginiA RAINfall System, is designed to run on a microcomputer. System programs were created using Borland Pascal, version 7. The system models were developed using study station …
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THE EFFECT OF SYNOPTIC SCALE WEATHER AND TOPOGRAPHY ON ROAD SURFACE TEMPERATURES IN DEVON
Microclimates of various road weather stations in Devon were examined. Road surface temperatures were measured during various synoptic conditions. Data from the thermal mapping exercise conducted by Vaisala TMI were analysed and categorised as clear and calm, cloudy and windy, and a condition …
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