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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 36 — Dec. 20, 2002
  • pp: 7522–7539

Optical and physical properties of stratospheric aerosols from balloon measurements in the visible and near-infrared domains. i. analysis of aerosol extinction spectra from the AMON and SALOMON balloonborne spectrometers

Gwenaël Berthet, Jean-Baptiste Renard, Colette Brogniez, Claude Robert, Michel Chartier, and Michel Pirre  »View Author Affiliations


Applied Optics, Vol. 41, Issue 36, pp. 7522-7539 (2002)
http://dx.doi.org/10.1364/AO.41.007522


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Abstract

Aerosol extinction coefficients have been derived in the 375–700-nm spectral domain from measurements in the stratosphere since 1992, at night, at mid- and high latitudes from 15 to 40 km, by two balloonborne spectrometers, Absorption par les Minoritaires Ozone et NO<sub><i>x</i></sub> (AMON) and Spectroscopie d’Absorption Lunaire pour l’Observation des Minoritaires Ozone et NO<sub><i>x</i></sub> (SALOMON). Log-normal size distributions associated with the Mie-computed extinction spectra that best fit the measurements permit calculation of integrated properties of the distributions. Although measured extinction spectra that correspond to background aerosols can be reproduced by the Mie scattering model by use of monomodal log-normal size distributions, each flight reveals some large discrepancies between measurement and theory at several altitudes. The agreement between measured and Mie-calculated extinction spectra is significantly improved by use of bimodal log-normal distributions. Nevertheless, neither monomodal nor bimodal distributions permit correct reproduction of some of the measured extinction shapes, especially for the 26 February 1997 AMON flight, which exhibited spectral behavior attributed to particles from a polar stratospheric cloud event.

© 2002 Optical Society of America

OCIS Codes
(010.1100) Atmospheric and oceanic optics : Aerosol detection
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements

Citation
Gwenaël Berthet, Jean-Baptiste Renard, Colette Brogniez, Claude Robert, Michel Chartier, and Michel Pirre, "Optical and physical properties of stratospheric aerosols from balloon measurements in the visible and near-infrared domains. i. analysis of aerosol extinction spectra from the AMON and SALOMON balloonborne spectrometers," Appl. Opt. 41, 7522-7539 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-36-7522

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