Wang et al. 2007 Botuverá Cave 90KYr Stable Isotope Data Wang, X.; Auler, A.S.; Edwards, R.L.; Cheng, H.; Ito, E.; Wang, Y.; Kong, X.; Solheid, M. Wang, X. Auler, A.S. Edwards, R.L. Cheng, H. Ito, E. Wang, Y. Kong, X. Solheid, M. PAGES 2k Network PAGES LOTRED SA2k millennial resolution earth science/paleoclimate/speleothems (depth,null,null,millimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Botuverá Cave>LATITUDE -27.22>LONGITUDE -49.16) A U-Th dated 90,000 year-long speleothem oxygen isotope record from southern Brazil anti-correlates remarkably with the cave calcite records from eastern China, but positively correlates with the speleothem record from northeastern Brazil, suggesting an interhemispheric anti-phasing of rainfall on both millennial and orbital timescales, likely related to displacement in the mean position of the intertropical convergence zone and associated asymmetry in Hadley circulation. The phase relationships among these records are consistent with the hypothesis that abrupt climate events during the last glacial period are triggered by oceanic circulation changes in the high latitudes and enhanced by tropical feedbacks. STUDY NOTES: DESCRIPTION: 90 KYr speleothem stable isotope record from stalagmite BTV3A, Botuverá Cave, southern Brazil. BTV3A is 24cm long, dated by 16 U-Th samples, and grew continuously for the last 90kyr with no detectable hiatuses. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Wang, X. Investigator : Auler, A.S. Investigator : Edwards, R.L. Investigator : Cheng, H. Investigator : Ito, E. Investigator : Wang, Y. Investigator : Kong, X. Investigator : Solheid, M. 2009-11-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8635 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/botuvera2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/botuvera2007.txt English https://www.ncdc.noaa.gov/paleo/study/8635 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/botuvera2007.txt Wang, X., A.S. Auler, R.L. Edwards, H. Cheng, E. Ito, Y. Wang, X. Kong, and M. Solheid. 2007. Millennial-scale precipitation changes in southern Brazil over the past 90,000 years. Geophys. Res. Lett., 34, L23701. doi:10.1029/2007GL031149. START YEAR: -87210 AD * END YEAR: 1530 AD -49.16 -27.22 -49.16 -27.22