Open AccessEvolution of near-ground optical turbulence over concrete runway throughout multiple days in summer and winter
Author(s) -
Melissa Beason,
Joseph Coffaro,
Christopher Smith,
Jonathon Spychalsky,
Sara B. Belichki,
Franklin Titus,
Frank Sanzone,
Bruce Berry,
Robert Crabbs,
Larry C. Andrews,
Ronald L. Phillips
Publication year - 2018
Publication title -
journal of the optical society of america. a, optics, image science, and vision./journal of the optical society of america. a, online
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.803
H-Index - 158
eISSN - 1520-8532
pISSN - 1084-7529
DOI - 10.1364/josaa.35.001393
Subject(s) - runway , scintillation , anisotropy , irradiance , isotropy , optics , atmospheric sciences , beam (structure) , intensity (physics) , turbulence , environmental science , physics , meteorology , geography , archaeology , detector
Experimental data are presented that demonstrate the evolution of the anisotropy/isotropy of atmospheric statistics throughout the course of four days (two winter, two summer) near the ground over a concrete runway in Florida. In late January and early February of 2017, a 532 nm near-plane-wave beam was propagated 1 and 2 km at a height of 2 m above the runway, and irradiance fluctuations were captured on a CCD array. In August of 2017, a 532 nm Gaussian beam was propagated 100 m at a height of near 2 m, and fluctuation data were captured on a CCD array. Winter data were processed to calculate the covariance of intensity and summer data processed to calculate the scintillation index. The resulting contours indicated a consistent pattern of anisotropy early in the day, evolving into isotropy midday, and returning to anisotropy in late afternoon. Accompanying atmospheric and wind data are presented throughout the measurement days.