How good an estimator of turbulence strength is Cn2 at the boundary layer?

Marco Sepúlveda; Darío G. Pérez; Felipe Olivares; David G. Ortiz-Suslow; Ryan Yamaguchi; Qing Wang

How good an estimator of turbulence strength is C_n² at the boundary layer?

Marco Sepúlveda, Darío G. Pérez, Felipe Olivares, David G. Ortiz-Suslow, Ryan Yamaguchi, Qing Wang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The Obukhov-Kolmogorov (OK) theory has provided us with the very well-known −11/3-power spectrum; widely assumed as a valid model for the refractive index fluctuations in the whole atmosphere. Within its reach, the strength of the fluctuations are conveyed by the structure constant, C_n². Yet, the OK model presupposes the existence of statistical isotropy and homogeneity-both for the velocity and refractive index fluctuations. In this work, we show that this is a rare occurrence in turbulent airflow above the ocean. Therefore, we need to re-evaluate the physical meaning of C_n² measurements.

Original language	English
Title of host publication	Applied Industrial Spectroscopy, AIS 2021
Publisher	The Optical Society
ISBN (Electronic)	9781557528209
State	Published - 2021
Externally published	Yes
Event	Applied Industrial Spectroscopy, AIS 2021 - Part of Optical Sensors and Sensing Congress 2021 - Virtual, Online, United States Duration: 19 Jul 2021 → 23 Jul 2021

Publication series

Name	Optics InfoBase Conference Papers

Conference

Conference	Applied Industrial Spectroscopy, AIS 2021 - Part of Optical Sensors and Sensing Congress 2021
Country/Territory	United States
City	Virtual, Online
Period	19/07/21 → 23/07/21

Cite this

@inproceedings{e90c83f6c3a34f02ab7fa5cb1501d3f4,

title = "How good an estimator of turbulence strength is Cn2 at the boundary layer?",

abstract = "The Obukhov-Kolmogorov (OK) theory has provided us with the very well-known −11/3-power spectrum; widely assumed as a valid model for the refractive index fluctuations in the whole atmosphere. Within its reach, the strength of the fluctuations are conveyed by the structure constant, Cn2. Yet, the OK model presupposes the existence of statistical isotropy and homogeneity-both for the velocity and refractive index fluctuations. In this work, we show that this is a rare occurrence in turbulent airflow above the ocean. Therefore, we need to re-evaluate the physical meaning of Cn2 measurements.",

author = "Marco Sep{\'u}lveda and P{\'e}rez, {Dar{\'i}o G.} and Felipe Olivares and Ortiz-Suslow, {David G.} and Ryan Yamaguchi and Qing Wang",

note = "Funding Information: This work was supported through the Coupled Air-Sea Processes and Electromagnetic ducting Research (CASPER) project funded by the U.S. Office of Naval Research grant N0001419WX01369 under its Multidisciplinary University Research Initiative (MURI); and by Agencia Nacional de Investigaci?n y Desarrollo (ANID, QUIMAL No. 190002, Chile). Publisher Copyright: {\textcopyright} OSA 2021, {\textcopyright} 2021 The Author(s); null ; Conference date: 19-07-2021 Through 23-07-2021",

year = "2021",

language = "English",

series = "Optics InfoBase Conference Papers",

publisher = "The Optical Society",

booktitle = "Applied Industrial Spectroscopy, AIS 2021",

}

Sepúlveda, M, Pérez, DG, Olivares, F, Ortiz-Suslow, DG, Yamaguchi, R & Wang, Q 2021, How good an estimator of turbulence strength is C_n² at the boundary layer? in Applied Industrial Spectroscopy, AIS 2021., JTu5A.6, Optics InfoBase Conference Papers, The Optical Society, Applied Industrial Spectroscopy, AIS 2021 - Part of Optical Sensors and Sensing Congress 2021, Virtual, Online, United States, 19/07/21.