Ceilometer inversion method using water-vapor correction from co-located microwave radiometer for aerosol retrievals

Recent ceilometer models are more sensitive to aerosols, which is increasing the interest in these instruments retrieve aerosol optical and microphysical properties. In this paper, a new methodology proposed vertical extinction backscatter profiles from Vaisala CL51 model. This based two parts: first, signal pre-processing with suppression of dark current background noises, correction water vapor absorption using near-real-time temperature absolute humidity (AH) co-located Microwave radiometer (MWR). The measured shows height-dependence 11 km agl end profile. From correction, it was seen that raw overestimates corrected one, mainly below 1 agl. Second part on an iterative Klett-based algorithm making use AERONET (AErosol RObotic NETwork) AOD (Aerosol Optical Depth) as inputs profiles. sensitivity retrievals modelled HYSPLIT correct absorption, instead MWR measurements, studied. errors found AH leads pre-processed range signals up 9%, then particle (?p) (?p) coefficients 2.2 % 25 %, respectively.