ASIAN SUMMER MONSOON RECORD OVER 61~50 kaBP FROM TWO STALAGMITES FROM SOUTHWESTERN GUIZHOU PROVINCE

An 15-year resolution oxygen-isotope profile, based on 12 ²³⁰Th dates and 999 δ¹⁸O data from two stalagmites (Wu23,Wu26) from Wulu Cave of southwest of Guizhou Province, China, provides a detailed history of the Asian monsoon variability between 61 and 51 kaBP. During this time interval, four cycles of millennial variations in δ¹⁸O values, averaging 1.7‰,are consistent with Dansgaard-Oeschger 17-14 events identified in the Greenland ice cores. A comparison between the Wulu, Hulu and Dongge Cave records dis-plays a generally similar pattern of δ¹⁸O variability between the three sites, indicating an inherently homogenous trait of Asian monsoon precipitation. Our data strikingly match well with those from the Greenland ice cores on centennial time scales, including the sub-cycles for these D-O events. The rapid monsoon cir-culation fluctuations during these sub-millennial events parallel the sharp jumps in high north-latitude temperatures. This relationship provides strong evidences for an impact of rapid atmosphere reorganization on the NH climate changes, which links different climate systems between low-and high-latitudes. The relat-ed changes in the atmosphere field possibly result in the co-variations between low-latitude monsoon sys-tem and the high north-latitude climate system on centennial time scales.