Lecture Using the 3D MOCAGE CTM to simulate the chemistry of halogens in the volcanic plume of Etna’s eruption in December 2018 at the regional scale Narivelo, Herizo; Marécal, Virginie; Hamer, Paul David; Surl, Luke; Roberts, Tjarda; Bacles, Mickaël; Varnach, Simon; Wagner, Thomas Publication details Event: EGU General Assembly 2021 (Online) Date: April 19th 2021 – April 30th 2021