Investigating a Persistent Stratospheric Aerosol Layer Observed over Southern Europe during 2019. - Kalliopi Artemis Voudouri; Konstantinos Michailidis; Maria Elissavet Koukouli; Samuel Rémy; Antje Inness; Ghassan Taha; Georgia Peletidou; Nikolaos Siomos; Dimitrios Balis; Mark Parrington (Remote. Sens., 2023)