Delta, arctic Siberia, Palaeogeogr. Palaeocli- matol. Palaeoecol., 299, 175–196, 2011. Schneider, J., Grosse, G., and Wagner, D.: Land cover classification of tundra environments in the Arctic Lena Delta [...] Maslanik, J., Guest, P., Stern, H., Moore, J., Turenne, R., et al.TS6 : Surface heat budget of the Arctic Ocean, B. Am. Meteor. Soc., 83, 255– 275, 2002. Vionnet, V., Brun, E., Morin, S., Boone, A., Faroux [...] River delta At its mouth in the Laptev Sea, the Lena River forms one of the largest deltas in the Arctic, covering around 25 000 km2. Continuous cold permafrost with a mean annual near-surface ground t