Estimation of microphysical characteristics of contrails from polarization lidar data: Theory and experiment
I.V. Samokhvalov1, I.D. Bryukhanov1, V.A. Shishko2, N.V. Kustova2, E.V. Nie1, A.V. Konoshonkin1,2, O.Yu. Loktushin1, D.N. Timofeev2
1National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050, Russia
2V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634055, Russia
Keywords: конденсационные следы самолетов, поляризационный лидар, матрица обратного рассеяния света, contrails, polarization lidar, backscattering phase matrix
Abstract
The technique for detecting and studying the optical and microphysical characteristics of aircraft condensation trails using the unique altitude polarization lidar of the National Research Tomsk State University (NR TSU) is described. The microstructure parameters of the ensembles of crystalline particles were estimated by comparing the elements of the backscattering light matrices (BSLM) obtained theoretically and experimentally. It is shown that the contrail appeared behind an aircraft formed in the atmosphere in 30-40 minutes after the emission of fuel combustion products from engines consists of small randomly oriented particles of ice, mostly columnar.
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