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 24 for “"Dust storms"”.
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Atmospheric Dynamics of Sub-Tropical Dust Storms
… Harmattan, Saudi Arabian, and Bodélé Depression dust storms. For each dust storm case study, MERRA reanalysis datasets, WRF simulated very high resolution datasets, MODIS/Aqua and Terra images, EUMETSAT images, NAAPS aerosol modelling plots, CALIPSO images, surface observations, and rawinsonde …
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Numerical Simulation of the Dynamics of Summer Shamal Dust Storms
… responsible for the formation of summer Shamal dust storms over the Low-Elevated (LE) region at 20^∘-30^∘N and 45^∘-55^∘E of the Arabian Peninsula (AP). Ten Shamal case studies based on the most intense dust storms in June and July between 2008 and 2012 and a null case study were selected using …
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Integrated impact analysis of yellow-dust storms : a regional case study in China
The dust storm is a meteorological event that is caused by strong winds and proceeds from arid and semi-arid regions, transporting a thick cloud of fine sediments. In China, the sediments of dust storms mainly come from the desert and thus are called "yellow-dust storms." Although these storms can …
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An Analysis of the Differences Between Two Seasonal Saudi Arabian Dust Storms Using WRF-Chem
… atmospheric conditions between two major dust storms in Saudi Arabia. These two types of dust storms occur annually over Saudi Arabia with different seasons, sources, and atmospheric dynamics. We analyzed the Sharav case study in the spring season from 31 March 2015 and the Shamal case …
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Predictive Analysis of Arizona Dust Storms (1996–2023): GIS, Artificial Intelligence (MaxEnt), and Spatiotemporal Data
… well Maximum Entropy (MaxEnt) model can predict duststorms in Arizona, United States. MaxEnt is a machine learning tool that was first developed to predict where different species might live. MaxEnt uses presence-only data which makes it especially useful in environments where reliable absence …
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Life under the desert sun : dust storms, steam baths and outhouses for the unencumbered desert dweller
Yesterday's desert is today your new home, is tomorrow's strip mall. The West remains the American 'way out' a chance to reinvent oneself, 'to make it'. Yet, the desert landscape is fraught with the politics of displacement, exploitation, and imposition, carrying with it a socio-political …
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Multi-Scale Atmospheric Dynamics of Extreme Saharan Dust Storms Resulting in Dust Transport Out of Africa to Iberia and the Atlantic
… meteorological processes that organize Saharan dust plumes and their subsequent long-range transport is a major global concern. However, the state-of-the-science of the meteorological forcing mechanisms for dust emission over the complex terrain of North Africa is incomplete due to very few …
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Automated dust storm detection using satellite images. Development of a computer system for the detection of dust storms from MODIS satellite images and the creation of a new dust storm database
Dust storms are one of the natural hazards, which have increased in frequency in the recent years over Sahara desert, Australia, the Arabian Desert, Turkmenistan and northern China, which have worsened during the last decade. Dust storms increase air pollution, impact on urban areas and farms as …
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Variability, origin and physical characteristics of dust aerosol in Iceland
… of the total particulate air pollution. Less industrialized and inhibited regions, such as deserts, can contribute remarkably to air pollution. Iceland is a good example of such areas. The trends in long-term dust activity in Iceland and results from the pioneer field experiments on dust …
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Integration Of Multi-Sensory Earth Observations For Characterization Of Air Quality Events
… to characterize air quality events, such as dust storms or smoke events from fires, a wide variety of Earth observations are needed from satellites, surface monitors and models. Traditionally, the burden of data access and processing was placed on the data user. These challenges of finding, …
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Assessing the uncertainties of Radar and LiDAR derived digital elevation information over static and dynamic terrain
… the effects of extreme events such as sand or dust storms. Cloud cover, among other factors, interferes with the altimetry signal causing data losses. To fill these gaps, Projection onto Convex Sets is employed to interpolate between known elevation locations using the known properties of the …
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Evaluating different remote sensing techniques for detection of Saharan dust and characterisation of dust sources
Mineral dust aerosols play an important role in climate and the Earth's energy budget. However, the nature and complexity of dust sources is poorly understood. Traditional techniques used for mapping the Sahara dust sources like the analysis of surface dust observations, back trajectory analysis of …
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Quantifying glacier melt enhancement due to dust deposition during the 2022 melt season. Tungnaárjökull glacier, South Iceland
… of light absorbing impurities such as mineral dust on glacier surfaces alters their reflective properties leading to a reduction in albedo, consequently increasing absorption of incoming solar radiation which further impacts the glacier surface mass balance (SMB). Icelandic glaciers portray a …
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Spatiotemporal Variations in the Radiant Energy Budgets of Mars and Earth
… Surveyor in Martian orbit. Mars, being a dry, dusty planet with a thin atmosphere, no oceans, and a fairly eccentric orbit, experiences temperamental interseasonal variations with significant hemispheric asymmetry. Near perihelion, global dust storms further perturb these transient, yet …
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Particle-resolved modeling for evaluating assumptions in aerosol studies
… particles (diameter > 1 micron), such as mineral dust or sea salt. Regional and global models frequently do not consider the interactions of the coarse mode aerosol with smaller particles and its interactions with the gas phase. This assumption might introduce errors in predictions of the size …
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Advanced methods for analysing and modelling multivariate palaeoclimatic time series
… transported from the Taklamakan desert via dust storms in the spring season.
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Between the Event and the Ordinary: Climate Crises and the Ecologies of Everyday Life in the California Desert
… second order ramifications like wild fires and dust storms, the local manifestations of a changing climate are converging to generate among Californians a sense of near-constant crisis that is both powerful and widespread. Based on thirteen months' fieldwork from June 2014 to July 2015 in the …
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Determining ground-level composition and concentration of particulate matter across regional areas using the Himawari-8 satellite
… to understand and mitigate health impacts from dust storms, wildfires and other aerosol emissions. Globally, surface monitoring is limited due to cost and infrastructure demands. While remote sensing can help estimate respirable (i.e. ground level) concentrations, current observations are …
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