Statistical simulation of laser pulse propagation in cirrus clouds with accounting for multiple scattering
T.V. Russkova, V.A. Shishko
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: lidar sounding, laser pulse propagation, multiple scattering, cirrus clouds, Monte Carlo method
Abstract
An original statistical model of laser pulse propagation in a scattering medium is considered, which makes it possible to calculate the power of a lidar signal taking into account scattering effects of any multiplicity. A comparative analysis of the temporal structure of the signal obtained using the model suggested and alternative methods is carried out. The features of the propagation of a laser pulse from a ground-based lidar in continuous cirrus clouds are studied taking into account the effects of multiple scattering. The dependence of the multiple scattering background on the cloud optical and microphysical characteristics (extinction coefficient, degree of roughness, size and shape of ice particles) and parameters of the lidar receiving system is studied. The simulation results indicate a high sensitivity of the part of the echo signal due to multiple scattered light to variable parameters, which should be taken into account when setting and solving inverse problems.
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