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Proxy variations over the last 140 ka from Greenland ice core, Chinese loess, and speleothem. a Chinese spleothem δ18O record15. b JY loess δ13CIC. c Greenland ice-core δ18O record53. Dashed lines denote correlations of positive loess δ13CIC and speleothem δ18O with low Greenland temperature
