Technical note: Scintillations of the double star α Cru observed by GOMOS/Envisat

Sofieva, V. F.; Dalaudier, F.; Kan, V.; Gurvich, A. S.

doi:https://doi.org/10.5194/acp-9-8967-2009

Articles | Volume 9, issue 22

Atmos. Chem. Phys., 9, 8967–8973, 2009

https://doi.org/10.5194/acp-9-8967-2009

© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: GOMOS (Global Ozone Monitoring by Occultation of Stars): data...

Atmos. Chem. Phys., 9, 8967–8973, 2009

https://doi.org/10.5194/acp-9-8967-2009

© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 22

27 Nov 2009

Technical note: Scintillations of the double star α Cru observed by GOMOS/Envisat

V. F. Sofieva¹, F. Dalaudier², V. Kan³, and A. S. Gurvich³ V. F. Sofieva et al.

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¹Earth observation, Finnish Meteorological Institute, Helsinki, Finland
²LATMOS, Université Versailles Saint-Quentin; CNRS/INSU, Verrières-le-Buisson, France
³Organization of Russian Academy of Sciences A. M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia

Received: 14 Jul 2009 – Discussion started: 02 Sep 2009 – Revised: 12 Nov 2009 – Accepted: 14 Nov 2009 – Published: 27 Nov 2009

Abstract. In this paper, we discuss scintillation time-spectra of the double star α Cru, which were measured by the GOMOS/Envisat photometer. The components of α Cru are not resolved by the angular field of view of the detector. The double structure of the light source reveals itself in the modulation of the observed scintillation spectra; this modulation is caused by anisotropic irregularities of the stratospheric air density. We present a qualitative and quantitative explanation of the properties of the double-star scintillation spectra. Possibilities of using double star scintillations for studying atmospheric air density irregularities are also discussed in the paper.