(2020-03-17) Saarinen, Ninni; Kankare, Ville; Pyörälä, Jiri; Yrttimaa, Tuomas; Liang, Xinlian; Wulder, Michael A.; Holopainen, Markus; Hyyppä, Juha; Vastaranta, Mikko; University of Helsinki, University of Eastern Finland - Saarinen, Ninni; University of Eastern Finland, University of Helsinki - Kankare, Ville; University of Helsinki - Pyörälä, Jiri; University of Eastern Finland, University of Helsinki - Yrttimaa, Tuomas; Finnish Geospatial Research Institute - Liang, Xinlian; Natural Resources Canada - Wulder, Michael A.; Univernsity of Helsinki - Holopainen, Markus; Finnish Geospatial Research Institute - Hyyppä, Juha; Universiity of Eastern Finland - Vastaranta, Mikko