The present efforts in climate modeling are far from being sufficient for providing realistic numbers on the influence of anthropogenic aerosols on the state of the atmosphere.
There are a number of cross-cutting issues relevant for all ESA atmospheric missions which can only be addressed through suitable airborne measurements. The missions include ADM/Aeolus, EarthCARE and Sentinel-3/-4/-5/-5p which deliver different aerosol related products requiring both detailed research in the development of the retrieval methods and the independent validation/evaluation of products following launch.
MULTIPLY - Development of a European HSRL airborne facility, is a ESA-ESTEC project which proposes the development of a novel multi-wavelength HSRL system (3b + 2a + 3d) for airborne operation.