Hydroclimate variations on the Tibetan Plateau over the past 2000 years

    The Tibetan Plateau, known as the Earth's largest and highest plateau, functions as a crucial nexus for global atmospheric processes. It exerts a pivotal influence on the hydroclimate dynamics of East Asia. Nevertheless, achieving a comprehensive understanding of historical and recent hydroclimate variations, along with their far-reaching ecological and societal impacts, has proven to be a formidable challenge due to limited observational data and uncertainties in proxy reconstructions. In this study, we have reconstructed the precipitation changes in the eastern Tibetan Plateau over the past 2000 years based on tree-ring δ¹⁸O data. This reconstruction emerges as a reliable proxy for precipitation changes in the central and eastern regions of China. Further research found that our precipitation reconstruction of the Tibetan Plateau unveils coherent variations between the Asian monsoon and the Westerlies.