Articles | Volume 9, issue 22
Atmos. Chem. Phys., 9, 8967–8973, 2009

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

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

  27 Nov 2009

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.
  • 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

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.

Final-revised paper