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Proceedings Paper

Space and temporal variability of optically active turbulence in the atmospheric boundary layer
Author(s): Igor V. Petenko; Vincentina D. Beljavskaja
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Paper Abstract

In this paper we analyze optically active turbulence variations in the daytime under well-developed convective activity of the ABL. We consider fast variations of the refractive index structure parameter Cn2 with quasi periods from some tens of seconds to a few tens of minutes and spatial scales from tens of meters to several some kilometers. Spectral characteristics and probability density distribution of Cn2 variations and their height dependence are presented. The strong intermittent structure of Cn2 is common with the convective ABL. The distribution of probability of Cn+2) at low heights is not lognormal and has a considerable negative asymmetry. The representative comb structure of spectra of Cn+2) variance are observed. Typical temporal and spatial scales of Cn2 variations are estimated. It is shown that, in spite of a rather high mean level of turbulence, there are time intervals with duration of a few minutes when its influence on wave propagation is slight enough to interfere with optical observations.

Paper Details

Date Published: 29 June 1994
PDF: 11 pages
Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); doi: 10.1117/12.178043
Show Author Affiliations
Igor V. Petenko, Institute of Atmospheric Physics (Russia)
Vincentina D. Beljavskaja, Institute of Atmospheric Physics (Russia)

Published in SPIE Proceedings Vol. 2222:
Atmospheric Propagation and Remote Sensing III
Walter A. Flood; Walter B. Miller, Editor(s)

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