Supplement to: Peterse, Francien; van der Meer, Jaap; Schouten, Stefan; Weijers, Johan W H; Fierer, Noah; Jackson, Robert B; Kim, Jung-Hyun; Sinninghe Damsté, Jaap S (2012): Revised calibration of the MBT–CBT paleotemperature proxy based on branched tetraether membrane lipids in surface soils. Geochimica et Cosmochimica Acta, 96, 215-229, https://doi.org/10.1016/j.gca.2012.08.011