Buch, Englisch, 142 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 407 g
Reihe: Springer Theses
Effects of Structure and Shape Applied to Paleoclimate Studies
Buch, Englisch, 142 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 407 g
Reihe: Springer Theses
ISBN: 978-3-030-56786-6
Verlag: Springer International Publishing
Light scattering from particles in the nanometric and micrometric size range is relevant in several research fields, such as aerosol science and nanotechnology. In many applications, the description of the optical properties of non-spherical, inhomogeneous particles is still inadequate or requires demanding numerical calculations. Lorenz–Mie scattering and effective medium approximations represent currently the main theoretical tools to model such particles, but their effectiveness has been recently called into question.
This work examines how the morphology of a particle affects its scattering parameters from an experimental standpoint, supporting findings with extensive simulations. The dust content of Antarctic, Greenlandic, and Alpine ice cores is analysed with a particle-by-particle approach. Moreover, a study on colloidal aggregates shows that correlations among the fields radiated by primary particles are responsible for the poor agreement of effective medium approximations with experimental results. On the theoretical side, an interpretation in terms of the structure factor is given, which satisfactorily describes the data. The insights of this thesis are relevant for quantifying the contribution of mineral dust to the radiative energy balance of the Earth.
Zielgruppe
Research
Autoren/Hrsg.
Fachgebiete
- Geowissenschaften Geologie Paläoökologie
- Naturwissenschaften Physik Elektromagnetismus Quantenoptik, Nichtlineare Optik, Laserphysik
- Naturwissenschaften Physik Thermodynamik Festkörperphysik, Kondensierte Materie
- Naturwissenschaften Biowissenschaften Biowissenschaften Ökologie
- Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie
Weitere Infos & Material
Introduction.- Scattering Fundamentals.- Scattering Models.- Mineral Dust.- Fractal Aggregates.- Conclusions.
