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 9 of 9 for “"Particle-resolved model"”.
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Black carbon mixing state impacts on aerosol activation investigations using particle-resolved model simulations
Black carbon-containing aerosol particles (called BC particles hereafter) are a major particle type in the atmosphere. Their source is the incomplete combustion of carbon containing material, which means that except for natural biomass burning all sources of BC particles are anthropogenic. They …
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Investigation of the evolution of atmospheric particles with integration of the stochastic particle-resolved model PartMC-MOSAIC and atmospheric measurements
… emission, or can be also formed through gas- particle conversion processes. Aerosol particles in the atmosphere often represent a complex mixture of a wide variety of species, and the mixing state can change during the evolution of particles in the ambient environment, leading to significantly …
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Single-particle instrument simulator: Bridging experiments and models
… of chemical species across individual aerosol particles, is crucial for quantifying aerosol optical, chemical, and micro-physical properties. For example, a particle’s absorptivity depends on whether light-absorbing components such as black carbon are externally or internally mixed. …
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Improving model representations of black carbon using a particle-resolved aerosol model
"Particles containing black carbon (BC) alter the Earth's energy balance by scattering and absorbing solar radiation, by interacting with clouds, and by decreasing the albedo of ice and snow. Each of these climate effects depends on the properties of individual BC-containing particles and their …
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Particle-resolved modeling for evaluating assumptions in aerosol studies
In most aerosol models, simplifying assumptions must be made regarding aerosol size and composition. PartMC-MOSAIC, being particle-resolved, does not require such assumptions. Thereby, the model provides a useful tool to evaluate assumptions and limitations within aerosol studies. This thesis, I …
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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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Idealized particle-resolved large-eddy simulations to evaluate the impact of emissions spatial heterogeneity on CCN activity
… remain a large source of uncertainty in climate models due to complex, nonlinear processes that alter aerosol properties and the inability to represent the full compositional complexity of aerosol populations within large-scale modeling frameworks. The spatial resolution of these models …
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Coupling data science and numerical simulations to empower atmospheric and environmental research
… research. However, state-of-the-art Earth System Models are subject to limitations because of the multiscale nature of the Earth system, where processes on scales smaller than the computational grid resolution remain unresolved and can only rely on simplified representations. These simplified …
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Investigating the impacts of entrainment on nucleation scavenging of black carbon particles through particle-resolved simulations
Aerosol particles have the ability to alter our climate by direct and indirect effects. Black carbon is a unique aerosol in that along with scattering, it can also absorb solar radiation, which heats the atmosphere and contributes to a positive radiative forcing. The optical and cloud condensation …