Poster Total Ozone Trends at Northern High Latitudes from Ground-based measurements Bernet, Leonie; Dahlback, Arne; Goutail, Florence; Hansen, Georg H.; Orsolini, Yvan Joseph; Pazminño, Andrea; Svendby, Tove Publikasjonsdetaljer Arrangement: Quadrenial Ozone Symposium 2021 (Online) Dato: 3. oktober 2021 – 9. oktober 2021