1 This is the author's final version of the manuscript published in 1 Remote Sensing of Environment 156 (2015) 96–108. 2 The original publication is available at www.elsevier.com/locate/rse, doi:10.1016/j.rse.2014.09.018 3 4 Introduction to GlobSnow Snow Extent products with considerations for 5 accuracy assessment 6 7 Authors: 8 Sari Metsämäki, Finnish Environment Institute 9 Jouni Pulliainen, Finnish Meteorological Institute 10 Miia Salminen, Finnish Environment Institute and Finnish Meteorological Institute 11 Kari Luojus, Finnish Meteorological Institute 12 Andreas Wiesmann, Gamma Remote Sensing AG 13 Rune Solberg, Norwegian Computing Center 14 Kristin Böttcher, Finnish Environment Institute 15 Mwaba Hiltunen, Finnish Meteorological Institute 16 Elisabeth Ripper, Enveo IT GmbH 17 18 Corresponding author: 19 Sari Metsämäki, Finnish Environment Institute, sari.metsamaki@environment.fi 20 P.O.Box 140, FI-00251 Helsinki, Finland 21 22