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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 61, Iss. 12 — Dec. 1, 1971
  • pp: 1646–1650

Behavior of the Refractive-Index-Structure Parameter near the Ground

J. C. WYNGAARD, Y IZUMI, and STUART A. COLLINS, JR.  »View Author Affiliations


JOSA, Vol. 61, Issue 12, pp. 1646-1650 (1971)
http://dx.doi.org/10.1364/JOSA.61.001646


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Abstract

A semiempirical theory is developed which relates the refractive-index-structure parameter <i>C<sub>n</sub></i><sup>2</sup> in the lowest few tens of meters to the vertical gradients of wind speed and temperature and to a stability parameter. This provides an indirect method of determining <i>C<sub>n</sub></i><sup>2</sup>, or its temperature counterpart <i>C<sub>T</sub></i><sup>2</sup>, and the method is successfully applied to recent data which include directly measured <i>C<sub>T</sub></i><sup>2</sup> values. The height dependence of the structure parameter is also determined, and the predicted <i>z</i><sup>-4/3</sup> profile under unstable conditions agrees with recent data in the free atmosphere at heights up to 500 m.

Citation
J. C. WYNGAARD, Y IZUMI, and STUART A. COLLINS, JR., "Behavior of the Refractive-Index-Structure Parameter near the Ground," J. Opt. Soc. Am. 61, 1646-1650 (1971)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-61-12-1646

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