Retrieval of atmospheric information

The retrieval code allowing the determination of the vertical profiles of the different observed species is based on the onion peeling method, starting the analysis of a series of spectra of an occultation, with the spectrum corresponding to the highest altitude where a signature is visible, deriving the concentration in that most external layer and using this information for analyzing the next spectrum of the series.

Progressively, the vertical profile is constructed from the most external layer down to an altitude of 65 km.

Fig 1 : Geometry of solar occultation measurements and definition of the onion peeling method
(credit: BISA)

 

Science results navigation menu

• What is a solar occultation - What can we learn from such observations?
• SOIR spectra
• Retrieval of atmospheric infomation
• A few of our results:
  • CO2
  • HCl
  • HF
  • CO
  • H2O and HDO
  • Aerosols
• Retrieval of Atmospheric temperature and density
• Access to DataBase