This IPA Action Group was formed in February 2015 following a successful thematic session on “Yedoma origin, records and future projections in a changing Arctic” at EUCOP4. The Yedoma Action Group aimed to synthesize existing information and generate new data on the circum-arctic distribution and thickness of Yedoma permafrost. Yedoma deposits, due to very high excess ice content, are especially prone to degradation under current climate scenarios in Siberia, Alaska and the Yukon Territory. Due to the very large frozen carbon pool in the permafrost deposits of this region, increased permafrost thaw could cause a positive carbon feedback loop to climate with global significance. Therefore, a detailed assessment of the Yedoma deposit volume (coverage and thickness) is of importance to estimate its potential response and relevance to future climate.
Contact: Jens Strauss (Jens.Straus@awi.de)
Report: Frozen Ground 45 p. 8-9
Strauss, J., et al. (2021). Circum-Arctic Map of the Yedoma Permafrost Domain. Frontiers in Earth Science, 9, 15 p. DOI: 10.3389/feart.2021.758360.