Potential and Challenges of Harmonizing 40 Years of AVHRR Data: The TIMELINE Experience. - Dech, Stefan; Holzwarth, Stefanie; Asam, Sarah; Andresen, Thorsten; Bachmann, Martin; Boettcher, Martin; Dietz, Andreas; Eisfelder, Christina; Frey, Corinne; Gesell, Gerhard; Gessner, Ursula; Hirner, Andreas; et al. (Remote Sensing, 2021)