Supplement to: Treat, Claire C; Kleinen, Thomas; Broothaerts, Nils; Dalton, April S; Dommain, René; Douglas, Thomas A; Drexler, Judith; Finkelstein, Sarah A; Grosse, Guido; Hope, Geoffrey; Hutchings, Jack A; Jones, Miriam C; Kuhry, Peter; Lacourse, Terri; Lähteenoja, Outi; Loisel, Julie; Notebaert, Bastiaan; Payne, Richard J; Peteet, Dorothy M; Sannel, A Britta K; Stelling, Jonathan; Strauss, Jens; Swindles, Graeme T; Talbot, Julie; Tarnocai, Charles; Verstraeten, Gert; Williams, Christopher J; Xia, Zhengyu; Yu, Zicheng; Väliranta, Minna; Hättestrand, Martina; Alexanderson, Helena; Brovkin, Victor (2019): Widespread global peatland establishment and persistence over the last 130,000 y. Proceedings of the National Academy of Sciences, https://doi.org/10.1073/pnas.1813305116