Fig. 4

Comparison between (a) reconstructed precipitation in this study (b), April–May scPDSI reconstruction in the Chayu area (Zhao et al. 2021), c June–August scPDSI reconstruction from the Monsoon Asia Drought Atlas (Cook et al. 2010), d November–February precipitation reconstruction in the northwestern Yunnan area (Keyimu et al. 2021), and e April–May relative humidity reconstruction in the central Hengduan Mountains (Cui et al. 2024). All reconstructions were standardized. Red and blue shaded zones indicate common dry and wet periods, respectively.