Figure 4

Compilation of speleothem δ18O records from Asian monsoon regions, including Tianmen9, Sanbao40, Heshang3, Dongge2, and Qunf11 caves (30° 55′ N/90° 04′ E, 31° 40′ N/110° 26′ E, 30° 27′ N/110° 25′ E, 17° 10′ N/54° 18′ E, respectively). Also shown are the North Atlantic IRD and NGRIP ice core records. The lowermost graph shows a comparison between the detrended BN-1 record and changes in radiocarbon-based sunspot number. The small letters are the same with those of Fig. 2. Dashed vertical grey lines denote the timings of MSEs represented by BN-1 record. Korean archaeological pottery ages were indicated in top of this figure. CWP = Current Warm Period, LIA = Little Ice Age, MWP = Medieval Warm Period, DACP = Dark Age Cold Period, RWP = Roman Warm Period. The English in this document has been checked by at least two professional editors, both native speakers of English. For a certificate, please see: http://www.textcheck.com/certificate/gBnsul.