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.
Results
Showing 1 to 8 of 8 for “"aerosol sources"”.
-
Arctic Aerosol Sources and Continental Organic Aerosol Hygroscopicity
… in predicting the ultimate effect of aerosol on climate, the sources of atmospheric particles and their subsequent ability to turn into cloud droplets needs to be better understood. This thesis addresses two parts of this issue: the sources of Arctic aerosol and the hygroscopicity of …
-
Fluctuating concentrations in atmospheric dispersion
… terrain. Two types of surface-level point aerosol sources were used. One is a fog-oil smoke and the other is a hexachloroethane chemical smoke. Measurements of concentration at points along crosswind transects were taken over time periods of an hour at distances to several kilometers from …
-
Cloud condensation nuclei in western Colorado: observations and model predictions
… in the warm cloud‐active portion of atmospheric aerosols, or cloud condensation nuclei (CCN), have been shown to impact cloud droplet number concentration and subsequently cloud and precipitation processes. This issue carries special significance in western Colorado where a significant portion of …
-
Influence of environmental parameters on atmospheric aerosol size distributions in a South African coastal zone
Aerosols are microscopic solid or liquid particles suspended in the atmosphere, which impact and are impacted by many physicochemical processes related to climate. By scattering and absorbing solar radiation and acting as cloud condensation nuclei, they have both a direct effect and indirect effect …
-
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
… 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 Brazilian …
-
Constraining the representation of aerosols in GCMs: explainable AI and Lagrangian approaches to identify key drivers of the natural aerosol lifecycle.
Aerosols remain one of the largest sources of uncertainty in climate modelling, with the representation of the natural baseline significantly hampering constraint on aerosol induced radiative forcing. This thesis begins with an introduction to aerosols and their role in the climate system, as well …
-
Constraining the representation of aerosols in GCMs: explainable AI and Lagrangian approaches to identify key drivers of the natural aerosol lifecycle.
Aerosols remain one of the largest sources of uncertainty in climate modelling, with the representation of the natural baseline significantly hampering constraint on aerosol induced radiative forcing. This thesis begins with an introduction to aerosols and their role in the climate system, as well …
-
SET-UP OF INNOVATIVE EXPERIMENTAL METODOLOGIES FOR THE ATMOSPHERIC AEROSOL CHARACTERISATION AND SOURCE APPORTIONMENT
… experimental methodologies for the atmospheric aerosol characterisation and apportionment. Many issues are still open in aerosol science. Among them, the identification and quantification of PM sources and the separation between natural and anthropogenic contributions were explored in this work. …