Radiative Transfer Modeling (RTM)

Schematic of the retrieval algorithm applied to solar stray light measurements carried out in the Volkamer group.

The initial product of solar stray light measurements is Slant Column Density (SCD) which is the integrated concentration of trace gases along all light paths.

This quantity can be inverted in order to quantify aerosol properties (optical and microphysical) and trace gas vertical information

Multi-wavelength aerosol extinction profile retrieved from 2-D MAX-DOAS (TCAP 2012)

Relative radiance measurements can also be used to retrieve multi-wavelength aerosol extinction profiles (see right).

Aerosol information is prerequisite for trace gas vertical profile retrievals.