Mesoscale modeling of optical turbulence (C2n) utilizing a novel physically-based parameterization

Ping He, Sukanta Basu

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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.

Original languageEnglish
Title of host publicationLaser Communication and Propagation through the Atmosphere and Oceans IV
PublisherSPIE
Volume9614
ISBN (Electronic)9781628417807
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventLaser Communication and Propagation through the Atmosphere and Oceans IV - San Diego, United States
Duration: 10 Aug 201512 Aug 2015

Conference

ConferenceLaser Communication and Propagation through the Atmosphere and Oceans IV
CountryUnited States
CitySan Diego
Period10/08/1512/08/15

Keywords

  • Mesoscale Modeling
  • Monin-Obukhov Similarity Relationship
  • Optical Turbulence
  • Turbulence Closure Scheme

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    He, P., & Basu, S. (2015). Mesoscale modeling of optical turbulence (C2n) utilizing a novel physically-based parameterization. In Laser Communication and Propagation through the Atmosphere and Oceans IV (Vol. 9614). [96140K] SPIE. https://doi.org/10.1117/12.2188227