“…Westerly moisture transport dominates regional precipitation in this region (Caves et al., 2015; Guo et al., 2002; Tian et al., 2001; Wang, 1990). Approximately 1,000 km away, Lake Baikal, located in the southern Siberia (Figure 1a), has preserved continuous terrestrial records of late‐Pliocene regional paleoclimate changes in central Asia (Antipina et al., 2001; Kuzmin et al., 2000; Kuzmin et al., 2003; Williams et al., 1997). Sharp drop in diatom abundance and rise in dense glacial clay in lake sediments, as well as the pollen‐based temperature and precipitation reconstructions (Figure 1b) indicate intensive terrestrial glacial expansion accompanying the abrupt cooling in central Asia and increasing moisture delivery to the Eurasian continent at this time.…”