Shenqi Cave, Southeastern Tibetan Plateau 2300 Year Speleothem d18O Data Tan, L.; Cai, Y.; Cheng, H.; Edwards, R.L.; Lan, J.; Zhang, H.; Li, D.; Ma, L.; Zhao, P.; Gao, Y. Tan, L. Cai, Y. Cheng, H. Edwards, R.L. Lan, J. Zhang, H. Li, D. Ma, L. Zhao, P. Gao, Y. Monsoon earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/climate reconstructions|speleothems (age,null,null,year Common Era,null,climate reconstructions|speleothems,null,null,N,null) earth science/paleoclimate/climate reconstructions|speleothems (precipitation,delta 18O,null,dimensionless,null,climate reconstructions|speleothems,null,principal component analysis,N,Precipitation Index for southwest China) earth science/paleoclimate/speleothems (age,null,null,year Common Era,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Shenqi Cave>LATITUDE 28.93>LONGITUDE 103.1) Climate changes on Southeastern Tibetan Plateau have important impacts on social and economic development, as well as the ecosystem of southwestern China and Indo-China Peninsula. Here, we collected two stalagmites from Shenqi (Miraculous) cave in southern Sichuan, China. The stalagmite d18O record shows good coherence with local instrumental rainfall record, as well as tree ring- and pollen-based moisture reconstructions from southeastern Tibetan Plateau during overlapped time periods. As a result, we reconstructed high-resolution (~4.9 yrs) monsoon precipitation variations on southeastern Tibetan Plateau over the past 2300 years by using the combined stalagmite d18O record. The result reveals an overall decreasing precipitation trend, with two most notable wet periods occurred in 60-280 AD and 370-510 AD. The most remarkably dry period is the recent 200 years. Some decadal scale wet and dry intervals were also identified. The abnormal drought during 1160-1245 AD might have accelerated Dali kingdom's demise at 1253 AD. Power spectrum analysis indicated significant 373-, 187-, 22-, 12- and 11- yr cycles in our stalagmite record, suggesting the impact of solar activity. Increased monsoon precipitation on southeastern TP was observed in solar activity minima during the last millennium. We further synthesized an integrated precipitation record for southwestern China and discussed spatial patterns of precipitation over China during the last two millennia. The comparisons confirm a "dry southern and wet northern" pattern in monsoonal China during the Medieval Warm Period and a "wet southern and dry northern" pattern during the Little Ice Age and Dark Age Cold Period. Solar activity, the strength of westerly jet and summer monsoon, as well as the SST of tropical Indo-Pacific might play important roles on the rainfall spatial patterns over monsoonal China during the last 2000 years. STUDY NOTES: Speleothem oxygen isotope (d18O) records from Shenqi Cave, southeastern Tibetan Plateau over the past 2300 years, plus reconstructed precipitation index (PI) for southwest China. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Tan, L. Investigator : Cai, Y. Investigator : Cheng, H. Investigator : Edwards, R.L. Investigator : Lan, J. Investigator : Zhang, H. Investigator : Li, D. Investigator : Ma, L. Investigator : Zhao, P. Investigator : Gao, Y. 2018-07-24 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/24710 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018pi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1-sq7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018pi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1-sq7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq7.txt English https://www.ncdc.noaa.gov/paleo/study/24710 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018pi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1-sq7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq7.txt Liangcheng Tan, Yanjun Cai, Hai Cheng, R. Lawrence Edwards, Jianghu Lan, Haiwei Zhang, Dong Li, Le Ma, Peipei Zhao, Yongli Gao2018High resolution monsoon precipitation changes on southeastern Tibetan Plateau over the past 2300 yearsQuaternary Science Reviews195122-13210.1016/j.quascirev.2018.07.021https://www.sciencedirect.com/science/article/pii/S0277379118302920 START YEAR: -317 AD * END YEAR: 2010 AD 103.1 28.93 103.1 28.93