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 53 for “"meteorological variables"”.
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The Relationship Between Meteorological Patterns and Rural Ground Ozone Concentration
… layer chemistry and dynamics. When the right meteorological variables are present, rural areas can have unhealthy air conditions with high levels of ground O3 concentration similar to that of metropolitan areas. Particular ground O3 concentration episodes were analyzed to summarize what …
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Landscape & meteorological drivers of burn severity in the southern Rockies
… analyze the relative importance of landscape and meteorological variables in determining burn severity across the Southern Rockies Ecoregion from 2001 to 2020. Key landscape variables and parameters included latitude, elevation, fire behavior fuel model, and northness, while important weather and …
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Investigating the Crucial Factors Impacting the Accuracy of Machine Learning Models for Lake Surface Water Temperature and Ice Thickness Prediction
… analyze intricate patterns and relationships in meteorological data, lake dynamics and their response to climate change. This study aims to explore how meteorological variables impact lake surface water temperature and ice thickness. First, we evaluate nine machine learning algorithms for lake …
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Coastal water level prediction: a comparative study of statistical and machine learning techniques for time series forecasting
… of time series analysis with exogenous meteorological variables to the task of generating accurate short-term (≤ 96 hour) forecasts of coastal water levels in a manner that is compatible with real-time monitoring for use in operational flood management. Traditional statistical methods, …
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Short-term wind power forecasting using artificial neural networks-based ensemble model
… coefficients between wind speed and other meteorological variables, together with a basic ANN model, were used to determine the impact of different input features on the forecasting performance of the ANNs. The effect of training sample resolution and training sample size on the forecasting …
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Modelado de un sistema de supervisión de la calidad del aire usando técnicas de fusión de sensores y redes neuronales
… la ciudad de Salamanca. El modelo, integra a las variables meteorológicas de dirección y velocidad de viento para determinar los efectos de estas en las concentraciones de contaminantes y determinar el nivel de contaminación atmosférica. La metodología consistió en analizar las series temporales …
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ΣΥΜΒΟΛΗ ΣΤΗ ΜΕΛΕΤΗ ΤΗΣ ΑΚΡΙΒΕΙΑΣ ΤΩΝ ΗΛΕΚΤΡΟΜΑΓΝΗΤΙΚΩΝ ΜΕΤΡΗΣΕΩΝ ΑΠΟΣΤΑΣΕΩΝ ΜΕ ΤΗ ΒΟΗΘΕΙΑ ΣΤΑΤΙΣΤΙΚΩΝ ΜΕΘΟΔΩΝ
… 2360 MICROWAVE DISTANCE MEASUREMENTS AND RELATED METEOROLOGICAL MEASUREMENTS (PRESSURE, TEMPERATURE AND HUMIDITY), A STUDY WAS CARRIED OUT AIMING TO IMPROVE THE EOM ACCURACY. THE BASIC TOOL IS MULTIPLE LINEAR REGRESSION(STEPWISE METHOD) AND SEVERAL MODELS WERE EXAMINED. THE STANDARD INDEPENDENT …
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Meteorological influences on malaria transmission in Limpopo Province, South Africa
… occasionally disturbed by changes in one or more meteorological factors and a sharp but temporary increase in disease incidence results. Monthly rainfall and temperature data from the South African Weather Service and malaria incidence data from Department of Health were used to determine the …
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Observation of New Particle Formation in the Northern Hemisphere at Altitude from 4 to 20 km
… measurements of aerosol size distributions and meteorological variables made in two continents, including USA and Europe. Despite the considerably different aerosol particle abundances among the sites, a common relationship was found between the characteristics of NPF events and the air mass …
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Developing a climatology for dry thunderstorms and associated environmental conditions in the contiguous United States
… are the result of an interesting balance of meteorological variables: they require sufficient moisture and instability in the atmosphere, but also a dry surface layer that facilitates evaporation of falling precipitation. Here, lightning flashes and precipitation amounts for the contiguous …
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Aerosols and boundary layer structure over Arctic sea ice based on airborne lidar and dropsonde measurements
… dropsondes were launched to obtain profiles of meteorological variables. Furthermore, in situ measurements of aerosol properties, meteorological variables and turbulence were part of the campaign. The measurements covered a broad range of atmospheric and sea ice conditions. In this thesis, …
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Ecosystem-atmosphere exchange of carbon dioxide and water vapour in typical East-Asian croplands
… and latent heat with additional measurements of meteorological variables and biomass change. Results show that the conventional Penman-Monteith approach which estimates the stomatal resistance as a function of single leaf stomatal resistance and leaf area index performs well for the estimation of …
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Modeling landslide occurrence and impacts in a changing climate
… precipitation, it uses composites of atmospheric variables to identity the conditions that are associated with days on which a landslide occurred. The analogues are compared to relevant meteorological variables in MERRA reanalysis data to achieve a success rate of over 50% in matching observed …
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Impacts of Synoptic Weather on the Ice Phenology of Maine Lakes, 1955-2005
… (SSC) method was used to encapsulate several meteorological variables that could have a bearing on ice-out variation. The balance between occurrence of relatively cool Moist Polar (MP) and relatively warm Dry Moderate (DM) weather-types during the winter-spring "superseason" was found to be a …
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Estimating and Modeling Transpiration of a Mountain Meadow Encroached by Conifers Using Sap Flow Measurements
… period and an evaluation of key environmental variables influencing water use during a dry growing season.</p> <p>The study was conducted at Rock Creek Meadow (RCM) in the southern Cascade Range near Chester, CA, USA. Sap flow data were collected in a sample of lodgepole pine and scaled on a …
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Combining measurements with deterministic model outputs: predicting ground-level ozone
… monitoring stations for air pollutants or other meteorological variables. We consider two different approaches to address this particular problem. The first approach is by using the Bayesian Melding (BM) model proposed by Fuentes and Raftery (2005). We successfully implement this model and …
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Hydrological responses to the synergistic changes in climate and land cover in the alpine pastoral region
… test is used to analyze the trend of hydro-meteorological variables based on the hydro-meteorological data time series analysis during the period of 1978 - 2014. Global Climate Models (or General Circulation Model, GCMs) under RCP 4.5 is used to assess the future climate (2021-2080); future …
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Determining The Effectiveness Of Satellite Remote Sensing Products To Quantify Aerosol Pollution In The Semi-Arid Western U.S.
… stations, emission inventory data, and model meteorological variables were used. The spatially resolved (12km x 12km horizontal resolution), daily PM2.5 estimates will be useful in future research associated with modeling smoke concentrations in urban areas, and to investigate the human health …
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Fire and Fuels: Vegetation Change Over Time in the Zuni Mountains, New Mexico
… questions were investigated: (1) <em>What variables are responsible for fire spread in the Zuni Mountains, New Mexico? </em>(2) <em>Which areas are prone to destructive and canopy level fires? </em>and (3) <em>How have the fuel model types that are most conducive to fire spread changed in …
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Evaluating Post-fire Vegetation Recovery in Canadian Mixed Prairie Using Remote Sensing Approaches
… and results indicated the significant role of meteorological variables and topography in vegetation's post-fire recovery. Findings from this research contribute to a better understanding of fire's effect on the under-studied Canadian northern mixed prairie. Also, the successful validation of RS …
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