My research is dedicated to radiative transfer in the solar spectral range, and retrieval of clouds, aerosols and trace gases from satellite measurements of scattered solar radiation. Specific topics are RT modelling (DAK model), O2 A-band, polarisation, and simple retrieval techniques. I am involved in several projects using GOME-1, SCIAMACHY, OMI, GOSAT, and GOME-2 satellite data.