Snow cover duration trends observed at sites and predicted by multiple models. - Essery, Richard; Kim, Hyungjun; Wang, Libo; Bartlett, Paul; Boone, Aaron; Brutel-Vuilmet, Claire; Burke, Eleanor; Cuntz, Matthias; Decharme, Bertrand; Dutra, Emanuel; Fang, Xing; Gusev, Yeugeniy; et al. (Cryosphere, 2020)