study sites (Alaska North Slope, Western Alaska, Central Yakutia, Kolyma Lowland) in the northern permafrost zone from 1999 to 2014. Regional patterns of lake area change on the Alaska North Slope (−0.69%) [...] two thermokarst-affected yedoma landscapes – on Sobo-Sise Island and on Bykovsky Peninsula in the north of eastern Siberia. Soil cores up to 3 m depth were collected along geomorphic gradients and analysed [...] permafrost region. Link to journal Yedoma Ice Complex of the Buor Khaya Peninsula (southern Laptev Sea) Minimum, mean (red), and maximum ground temperatures based on almost 3 years continuous measurements