Methods to retrieve the complex refractive index of aquatic suspended particles: going beyond simple shapes
| Autor: | Jaume Piera, Albert-Miquel Sánchez |
|---|---|
| Přispěvatelé: | European Commission, Consejo Superior de Investigaciones Científicas (España) |
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Generalization lcsh:Life 01 natural sciences 010309 optics Optics Simple (abstract algebra) lcsh:QH540-549.5 0103 physical sciences Statistical physics Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Earth-Surface Processes Physics Scattering business.industry Suspended particles lcsh:QE1-996.5 3. Good health lcsh:Geology lcsh:QH501-531 Distribution (mathematics) Homogeneous SPHERES lcsh:Ecology business Refractive index |
| Zdroj: | Biogeosciences, Vol 13, Iss 14, Pp 4081-4098 (2016) Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1726-4189 1726-4170 2011-3048 |
| Popis: | 18 pages, 19 figures, 2 tables The scattering properties of aquatic suspended particles have many optical applications. Several data inversion methods have been proposed to estimate important features of particles, such as their size distribution or their refractive index. Most of the proposed methods are based on the Lorenz–Mie theory to solve Maxwell's equations, where particles are considered homogeneous spheres. A generalization that allows consideration of more complex-shaped particles is the T-matrix method. Although this approach imposes some geometrical restrictions (particles must be rotationally symmetrical) it is applicable to many life forms of phytoplankton. In this paper, three different scenarios are considered in order to compare the performance of several inversion methods for retrieving refractive indices. The error associated with each method is discussed and analyzed. The results suggest that inverse methods using the T-matrix approach are useful to accurately retrieve the refractive indices of particles with complex shapes, such as for many phytoplankton organisms This work was supported by the Spanish National Research Council (CSIC) under the EU Citclops Project (FP7-ENV-308469), the MESTRAL project (CTM2011-30489-C02-01), and the CSIC ADOICCO project (Ref 201530E063) |
| Databáze: | OpenAIRE |
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