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Aerosol Optics: Light Absorption and Scattering by Particles by Alexander A. Kokhanovsky PDF

By Alexander A. Kokhanovsky

ISBN-10: 3540237348

ISBN-13: 9783540237341

ISBN-10: 3540499091

ISBN-13: 9783540499091

In Aerosol Optics, Alexander Kokhanovsky presents a complete assessment of obtainable suggestions for the distant sensing of aerosols. even supposing quite often satellite tv for pc distant sensing is taken into account, ground-based innovations also are mentioned. The paintings is based at the reliable foundation of radiative move thought, coupled with Maxwell concept for the calculation of the scattering homes of small debris. specifically, the writer describes concepts for the selection of the column focus of aerosol debris and their optical sizing utilizing spaceborne optical instrumentation. the vast majority of the suggestions defined during this e-book use a so-called "library method". this technique depends the precalculated top-of-atmosphere reflectances (TOAR) for vaious atmospheric aerosol forms. The comparability of measured and calculated TOARS permits one to signify the optically-equivalent aerosol state.

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Additional info for Aerosol Optics: Light Absorption and Scattering by Particles in the Atmosphere

Example text

This feature can be used for the identification of the aerosol type. In particular, the value of Pc for oceanic aerosol undergoes rapid changes at scattering angles larger than 160 degrees. The value of f34 (see Fig. 14(c)) can be also interpreted as the degree of circular polarization of scattered light for incident linearly polarized light (with the azimuth À45 degrees). Therefore, f34 shows the linear-to-circular polarized light conversion efficiency. Usually, such a conversion has a low efficiency with jPc j smaller than 30 % in the forward hemisphere (see Fig.

It follows that the value of P is larger for fine mode aerosols and also for soot, which shows a polarization curve similar to that for molecular scattering, which is given by sin2 h=ð1 þ cos2 hÞ. The polarization curves given in Fig. 14(a) are very different and, therefore, they can be used for the identification of the predominant aerosol type. Elements f33 and f34 are shown in Figs. 14(b) and (c), respectively. 0 0 20 40 60 80 100 120 scattering angle, degrees Fig. 14(c). The same as in Fig.

0 0 20 40 60 80 100 120 140 160 180 scattering angle, degrees Fig. 14(a). The same as in Fig. 9 except for the degree of linear polarization of singly scattered light assuming unpolarized light illumination conditions. 0 0 20 40 60 80 100 120 140 160 180 scattering angle, degrees Fig. 14(b). The same as in Fig. 9 except for f33 . , 1976). 2 is given in Fig. 14(a). It follows that the value of P is larger for fine mode aerosols and also for soot, which shows a polarization curve similar to that for molecular scattering, which is given by sin2 h=ð1 þ cos2 hÞ.

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Aerosol Optics: Light Absorption and Scattering by Particles in the Atmosphere by Alexander A. Kokhanovsky


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