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 132 for “"wind direction"”.
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Analysis of wind direction fluctuations
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Metallurgy, 1951
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Forecasting Wind Direction Across Very Short and Short Term Time Horizons for Wind Turbine Control
Wind energy systems will require improved efficiency to meet future electricity demands in alignment with net-zero goals. Wind turbine yaw control systems can provide incremental improvements in power efficiency across both individual turbines and the collective wind farm. Yaw control strategies …
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Natural ventilation through windows in a classroom (CFD analysis crossventilation of asymmetric openings: Impact of wind direction and louvers design)
… geometry of louvers, building orientation and wind direction. Therefore, the geometry of louvers and wind direction can have a considerable influence on the cross-ventilation flow. Many studies on natural ventilation have been released in the past, however, a review of the literature shows that …
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Wind-tunnel study on the influence of trees on street canyon ventilation. Focus on tree density, street canyon geometry, and wind direction
L'abstract è presente nell'allegato / the abstract is in the attachment
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Assessment of High-Resolution Simulation in Reproducing Surface Wind over Alps
… study is to statistically evaluate the surface wind speed simulated over Alps by the ICON high-resolution climate model. SYNOP observation is the reference of the simulated data. The evaluation is focusing on the perspectives of wind speed and wind directions. The analysis shows the simulation …
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Numerical evaluation of wind-induced dispersion of pollutants around buildings
A detailed and comprehensive numerical study of wind-induced pollutant dispersion around buildings has been carried out. Research in this area was reviewed and analyzed. The results from various studies were compared. Based on the review and the comparison with various studies, a more effective …
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The morphology, sedimentology and palaeoenvironmental significance of two pan-lunette clusters in the Southwestern Cape of South Africa
… cluster, is at variance with predominant modern wind direction and seasonality of precipitation at both sites, although the difference is more pronounced at Agulhas. In order to elucidate the occurrence and formational processes of these features, a dual-scale approach was employed: a regional …
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A numerical investigation of tidal current circulation in the Gulf of Maine
… runs are reported; one uses the tides and no wind and the remaining six use uniform wind fields in consort with the tides. A modified method of handling the topographic data is used. The pertinent results of the study are: (1) the use of Hansen's model with adjacent open boundaries produces …
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An Ocean Surface Wind Vector Model Function For A Spaceborne Microwave Radiometer And Its Application
Ocean surface wind vectors over the ocean present vital information for scientists and forecasters in their attempt to understand the Earth's global weather and climate. As the demand for global wind velocity information has increased, the number of satellite missions that carry wind-measuring …
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Time Series Models for Finance and the Environment
… of circular and linear variables such as wind direction and velocity. The model is capable of exploiting additional information from the data to provide a new simple solution to model both data series even in absence of wind. The chapter provides an extension which allows to test and model …
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Cluster-enhanced Ensemble Learning for Mapping Surface Ozone in China
… urban scales, confirming the importance of wind direction in ozone simulation. However, its impact has not been sufficiently addressed in nationwide studies. This research integrates multisource observational data from 2003 to 2019 across China, constructing a comprehensive …
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Analyis Of Airborne Microwave Polarimetric Radiometer Measurements In The Presence Of Dynamic Platform Attitude Errors
… radiometer technique for inferring ocean surface wind direction [3, 5, 7]. This technique is based upon the anisotropy of the polarized ocean blackbody emissions at microwave frequencies relative to the azimuth angle between the microwave radiometer antenna "look" direction and the direction of …
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A study of the statistical approach to wind loading
… probable response of structures in the along-wind direction. An outline of the theoretical basis of the approach is given and the effect of varying wind and structural parameters for a range of different structures is examined. To put the study in context, a brief look is taken at the problems …
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Modeling Of Atmospheric Refraction Effects On Traffic Noise Propagation
… for predicting atmospheric refraction shows that wind direction is a significant parameter and should be included in future modeling for atmospheric refraction. To accomplish this, the model includes a "wind shear" and "lapse rate" terms instead of wind speed and temperature as previously needed …
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Wintering Reddish Egret (Egretta Rufescens) Foraging Response To Environmental Variability On The Southern Texas Gulf Coast
… environmental variables, I found increasing wind speed and an easterly wind direction had negative effect on the presence of foraging Reddish Egrets in the study area, while a westerly wind direction had a positive effect, suggesting that wind patterns influence the distribution of foraging …
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The role of weather and topography in the airborne dispersal of particulate matter in Kent
Local weather data (wind direction, wind speed and temperature) from meteorological stations and daily synoptic data have been examined in relation to airborne particulate material (PM10) concentrations recorded at 17 pollution monitoring sites throughout Kent for the period 2000 to 2008, as an aid …
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Seasonal and interannual variability of wind-driven upwelling at Lüderitz, Namibia
… this study is to examine the variability in the wind regime at diurnal, seasonal, interannual and interdecadal time scales. Meteorological measurements including wind speed, wind direction and air pressure collected at Dias Point Lighthouse (260 38.094'S 150 05.612'E) at hourly to eight-hourly …
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The pollen and spores of metropolitan Cape Town and their relationship with meteorological conditions
… the atmosphere. Meteorological factors such as wind speed and wind direction, precipitation, temperature, relative humidity, atmospheric pressure and atmospheric stability have been identified as affecting air spora concentrations and an attempt is made to explain the relationships involved. A …
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Spatial Distribution of Convective Activity in the Las Vegas Valley and its Relation to the Urban Growth Boundary
… 2008. The LVV study region was divided into six directional sections: northwest (NW), west (W), southwest (SW), northeast (NE), east (E), and southeast (SE). Through the creation of a convective climatology for the LVV the storm patterns and trends were analyzed. The activity during the study …
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A User Study on 2D Wind Visualization Methods
… used visualization methods for 2 dimensional wind data through user testing. The term ¡°effective¡± was re-defined in the context of visualization, and two experiments were carefully designed to target at wind speed and direction respectively. Data gathered through these experiments was used …
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