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Proceedings Paper

Mesoscale modeling of optical turbulence (C2n) utilizing a novel physically-based parameterization
Author(s): Ping He; Sukanta Basu
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Paper Abstract

In this paper, we propose a novel parameterization for optical turbulence (C2n) simulations in the atmosphere. In this approach, C2n is calculated from the output of atmospheric models using a high-order turbulence closure scheme. An important feature of this parameterization is that, in the free atmosphere (i.e., above the boundary layer), it is consistent with a well-established C2n formulation by Tatarskii. Furthermore, it approaches a Monin-Obukhov similarity-based relationship in the surface layer. To test the performance of the proposed parameterization, we conduct mesoscale modeling and compare the simulated C2n values with those measured during two field campaigns over the Hawaii island. A popular regression-based approach proposed by Trinquet and Vernin (2007) is also used for comparison. The predicted C2n values, obtained from both the physically and statistically-based parameterizations, agree reasonably well with the observational data. However, in the presence of a large-scale atmospheric phenomenon (a breaking mountain wave), the physically-based parameterization outperforms the statistically-based one.

Paper Details

Date Published: 4 September 2015
PDF: 11 pages
Proc. SPIE 9614, Laser Communication and Propagation through the Atmosphere and Oceans IV, 96140K (4 September 2015); doi: 10.1117/12.2188227
Show Author Affiliations
Ping He, North Carolina State Univ. (United States)
Sukanta Basu, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 9614:
Laser Communication and Propagation through the Atmosphere and Oceans IV
Alexander M. J. van Eijk; Christopher C. Davis; Stephen M. Hammel, Editor(s)

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