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 “"Carbonaceous Aerosol"”.
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Spatial trends in surface-based carbonaceous aerosol measurements during DISCOVER-AQ in Houston, TX.
Carbonaceous aerosol (both fine particulate matter (PM₂.₅) and total suspended particulate (TSP)) were collected during NASA's DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) in Houston, TX during September 2013. Four …
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Physico-chemical characterisation of atmospheric aerosols in Tanzania, with emphasis on the carbonaceous aerosol components and on chemical mass closure
Three aerosol sampling campaigns were conducted at two sites (i.e., Dar es Salaam and Morogoro) in Tanzania, during different seasons from May 2005 through May 2006. A Gent PM10 stacked filter unit sampler with sequential Nuclepore polycarbonate filters, providing coarse (2-10 µm diameter) and fine …
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Multiphase Aging of Atmospheric Biomass Burning Brown Carbon
Brown carbon (BrC) is a type of carbonaceous aerosol, primarily emitted from biomass burning sources such as wildfires. These aerosol particles have significant implications on climate through their ability to absorb light, and potentially contributing to warming effects. Due to the expected …
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Development of improved sampling and analysis methods for measuring organic, elemental, and water-soluble organic carbon in atmospheric aerosols and application to aerosol studies in Europe and tropical/equatorial and oceanic regions
… (2) to deploy improved collection procedures for carbonaceous aerosols, whereby the sampling artifacts are better controlled or can be corrected for; (3) to perform detailed carbonaceous aerosol characterisation studies in Belgium and at urban and forested sites throughout Europe and (4) in the …
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Particle-resolved aerosol modeling on the regional scale – insights into importance of capturing aerosol mixing state
Aerosol particles in the atmosphere are complex mixtures of different chemical species, and their compositions are constantly evolving as coagulation and multiphase processes act on the particle population. The particles interact with the climate system directly by scattering and absorbing solar …
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Investigating the representation of smoke and its implications for air quality and climate
… direct radiative effects. Chapter 3 investigates carbonaceous aerosol and its absorption properties from fires in two large fire source regions, the western US and Africa, using observations from three aircraft campaigns focused on fires. We find that smoke from African fires is more absorbing …
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EXPLOITING ADVANCED ATMOSPHERIC AEROSOL CHARACTERISATION TO DEVELOP CUTTING-EDGE APPROACHES FOR SOURCE APPORTIONMENT
Atmospheric aerosols are very complex systems due to the huge variety of emission sources, size distributions, chemical properties, and transformation processes. Although the characterisation of atmospheric aerosols is still challenging, their study is essential since they have different impacts …
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Understanding the Sources, Atmospheric Evolution and Radiative Effect of Brown Carbon Aerosol Particles
Organic aerosols (OA) have long been thought to only scatter incoming solar radiation and have a cooling effect on climate. However, a fraction of OA, referred to as brown carbon (BrC), absorbs light in the lower visible to ultraviolet range. BrC can be emitted from incomplete combustions and can …