EDP Sciences
Free access
Volume 416, Number 3, March IV 2004
Page(s) 1193 - 1200
Section Instruments, observational techniques, and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20031390

A&A 416, 1193-1200 (2004)
DOI: 10.1051/0004-6361:20031390

Optical turbulence modeling in the boundary layer and free atmosphere using instrumented meteorological balloons

A. Abahamid1, A. Jabiri1, J. Vernin2, Z. Benkhaldoun1, M. Azouit2 and A. Agabi2

1  Laboratoire de Physique des Hautes Énergies et Astrophysique, Département de Physique, Faculté des Sciences Semlalia, BP 2390, Marrakech, Maroc
2  LUAN, UMR 6525, Université de Nice-Sophia Antipolis, 06108 Nice Cedex 2, France

(Received 12 May 2003 / Accepted 25 August 2003)

In this paper, we study the behavior of atmospheric turbulence in the boundary layer and free atmosphere using balloon-born radiosondes. The data measurements were carried out with 168 balloons launched from 9 sites. Profiles of various parameters ( CN2, M2 and $L_{\rm o}$) characterizing atmospheric turbulence are established. We work out statistical models of atmospheric turbulence in the boundary layer, and we checked their coherence by comparing them with other models. In the free atmosphere, the  CN2 profile is coherent with those of the models of Hufnagel and of Brown-Beland. A complete behavior of the outer scale  $L_{\rm o}$ is given from the ground up to 30 km which fits with partial models of Coulman-Vernin and Beland-Brown.

Key words: turbulence -- atmospheric effects -- balloons

Offprint request: A. Jabiri, jean@vernin@unice.fr

© ESO 2004

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