Permafrost Biases Climate Signals in δ18Otree-ring Series from a Sub-Alpine Tree Stand in Val Bever/Switzerland

• Published in: Atmosphere Vol. 12; no. 7; p. 836
• Main Authors: Grießinger, Jussi, Meier, Wolfgang Jens-Henrik, Bast, Alexander, Debel, Annette, Gärtner-Roer, Isabelle, Gärtner, Holger
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 28.06.2021
• Subjects: Boreal ecosystems; Cellulose; Circulation patterns; Climate; Climate change; Climate sensitivity; Climate variations; Cold; Dynamic height; Ecological distribution; Ecosystems; Elevation; General circulation models; Geopotential; Geopotential height; Hydrologic cycle; Hydrology; Investigations; Isotopes; Larix decidua; Larix decidua Mill; Oxygen; Oxygen isotopes; Permafrost; Permafrost distribution; Precipitation; Seasonal variations; Sensitivity; signal bias; sporadic mountain permafrost; Summer; Swiss Alps; Temperature; Temperature variations; Time series; Topography; Tree rings; tree-ring δ18O; Trees; Upper Engadin; Variation; Weather; Switzerland

During recent decades, stable oxygen isotopes derived from tree-ring cellulose (δ18OTRC) have been frequently utilised as the baseline for palaeoclimatic reconstructions. In this context, numerous studies take advantage of the high sensitivity of trees close to their ecological distribution limit (h...