Towards the Third Millennium Changes in Siberian Triple Tree-Ring Stable Isotopes

Significant air temperature and precipitation changes have occurred since the 2000s in vulnerable Siberian subarctic regions urged updates of available chronologies towards third millennium. It is important to better understand recent climatic compared past decades, centuries even millennia. In this study, we present first annually resolved triple tree-ring isotope dataset (?13C, ?18O ?2H) for eastern part Taimyr Peninsula (TAY) northeastern Yakutia (YAK) from 1900 2021. We found that novel largely unexplored ?2H larch cellulose was linked significantly with YAK site, which affected by averaged April–June temperatures evaporation. Simulated Land Surface Processes Exchanges (LPX-Bern 1.0) model, water fraction per year soil depths at 0–20 20–30 cm new eco-hydrological data. Our results suggest increasing evapotranspiration response trees’ relation rising thaw uptake lower (20–30 cm) depth. A positive effect July on a negative impact were found, indicating dry conditions. The ?13C both sites showed correlations relative humidity, confirming environmental conditions