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 8 of 8 for “"Aerosol radiative forcing"”.
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Direct Aerosol Radiative Forcing Based on Optical Measurements at Contrasting, Climatically Important Sites
"To characterize direct aerosol radiative forcing of climate ( DARF), aerosol optical properties were measured at two contrasting locations, a clean marine Southern Hemisphere site (Cape Grim Tasmania) and an anthropogenically perturbed Northern Hemisphere site (Sagres, Portugal). Total light …
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Aerosol particle light scattering at a perturbed mid-latitude continental northern hemisphere site and its dependence on relative humidity, wavelength of light, particle size and composition
Recent model predictions indicate that sulfate aerosol particles cause radiative forcing of the same magnitude but of opposite sign than the forcing caused by anthropogenic greenhouse gases. The spatial and temporal variability of parameters used in the models are highly uncertain resulting in …
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Physical and Chemical Properties of Laboratory and Ambient Aerosols Related to Climate Change
… of closure when measuring and modeling aerosol optical properties as a function of RH in a laboratory and reports measured ambient aerosol optical and chemical properties for an anthropogenically perturbed continental US site from 1995 to 2000. The optical closure experiment was …
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Characterization of carbonaceous aerosols from biofuel combustion: emissions and climate relevant properties
Aerosol direct radiative forcing on climate is significant but highly uncertain. Carbonaceous aerosols, composed of black carbon (BC) and organic carbon (OC), are important to understand aerosol radiative forcing due to their prevalence in the atmosphere. Biofuel combustion is responsible for …
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Variability of aerosol and cloud optical properties and their effect on the transfer of solar irradiance in the atmosphere
This thesis is focused on the aerosols and clouds optical properties and the effects that these parameters have on the solar radiation transfer in the atmosphere. The first chapter provides a brief description of the basic concepts of radiative transfer. The radiative transfer theory is described, …
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Assessing solar radiation components over the alpine region Advanced modeling techniques for environmental and technological applications.
… are: absorption and scattering by clouds and aerosols, and shading, reflections and sky obstructions by terrain. Ground-based measurements capture all these effects, but are unevenly distributed and poorly available in the Italian Alps. Consequently they are inadequate for assessing spatially …
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Urban-scale impacts on the global-scale composition and climate effects of anthropogenic aerosols
… important species (VOCs, PAN, OC, and sulfate aerosol) usually have their weighted RMS error less than 10% as well, except for a small number of cases. These cases, in which the highly non-linear nature of the processing is too large for the third order metamodel to give an accurate fit, are …
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Mechanisms of Interactions between Aerosol Physics and Atmospheric Dynamics
… study revealed that the variability Saharan dust radiative properties is significantly linked to high-frequency atmospheric wave activity across the tropical Atlantic storm tracks, while the variability of smoke particles from the South African biomass burning is attributed by low-frequency …