Retrieval of Fog/Low Stratus Microphysical Properties at Night with MSG/SEVIRI - A Comparison of Two Radiative Transport Models: Streamer and libRadtran

s bands. Absorption effects may lead to inaccuracies in infrared channels. Streamer has got two radiative transfer solvers. LibRadtran is a library of radiative transfer routines and programs. The central program can be used as a tool for the simulation of instrument signals. It has got eight radiative transfer solvers. There are four different methods given for the spectral calculations, depending on the time and the purpose of the calculation is used for. For both radiative transfer models, all infrared channels except the water vapour channels are used and the optical thickness, effective droplet radius, surface temperature and the satellite zenith angle are varied. The aim of this study is to find out which radiative transfer model is most useful for the retrieval of FLS microphysics. Output from both radiative transfer models is presented and compared. The implementation in FLS property retrieval is shown and discussed.