Representativeness of single lidar stations for zonally averaged ozone profiles, their trends and attribution to proxies - Zerefos, Christos; Kapsomenakis, John; Eleftheratos, Kostas; Tourpali, Kleareti; Irina Petropavlovskikh; Daan Hubert; Sophie Godin-Beekmann; Wolfgang Steinbrecht; Stacey Frith; Viktoria Sofieva; Birgit Hassler (Atmos. Chem. Phys., 2018)