Lapa Grande Cave, Brazil Holocene Speleothem Oxygen Isotope Data Stríkis, N.M.; Cruz, F.W.; Cheng, H.; Karmann, I.; Edwards, R.L.; Vuille, M.; Wang, X.; de Paula, M.S.; Novello, V.F.; Auler, A.S. Stríkis, N.M. Cruz, F.W. Cheng, H. Karmann, I. Edwards, R.L. Vuille, M. Wang, X. de Paula, M.S. Novello, V.F. Auler, A.S. Monsoon hydrology 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 (Lapa Grande Cave>LATITUDE -14.4227>LONGITUDE -44.3656) Well-dated high-resolution oxygen isotope records of speleothems in central-eastern Brazil spanning from 1.3 to 10.2 kyr B.P. reveal that the occurrence of abrupt variations in monsoon precipitation is not random. They show a striking match with Bond events and a significant pacing at ~800 yr, a dominant periodicity present in sea surface temperature records from both the North Atlantic and equatorial Pacific Oceans that is possibly related to periods of low solar activity (high 14C based on the atmospheric 14C record). The precipitation variations over central-eastern Brazil are broadly antiphased with the Asian and Indian Monsoons during Bond events and show marked differences in duration and structure between the early and late Holocene. Our results suggest that these abrupt multicentennial precipitation events are primarily linked to changes in the North Atlantic meridional overturning circulation (AMOC). Anomalous cross-equatorial flow induced by negative AMOC phases may have modulated not only the monsoon in South America but also affected El Nino-like conditions in the tropical Pacific during the Holocene. STUDY NOTES: Stable oxygen isotope record of LG3 and LG11 stalagmite from Lapa Grande cave, central-eastern Brazil. The Lapa Grande record spans from 1.3 to 10.2 kyr B.P. with a hiatus from 6.2 to 5.9 kyr B.P. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Stríkis, N.M. Investigator : Cruz, F.W. Investigator : Cheng, H. Investigator : Karmann, I. Investigator : Edwards, R.L. Investigator : Vuille, M. Investigator : Wang, X. Investigator : de Paula, M.S. Investigator : Novello, V.F. Investigator : Auler, A.S. 2012-11-16 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13540 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg3.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg11.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg3.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg11.txt English https://www.ncdc.noaa.gov/paleo/study/13540 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg3.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg11.txt Nicolas M. Strikis, Francisco W. Cruz, Hai Cheng, Ivo Karmann, R. Lawrence Edwards, Mathias Vuille, Xianfeng Wang, Marcos S. de Paula, Valdir F. Novello, and Augusto S. Auler. 2011. Abrupt variations in South American monsoon rainfall during the Holocene based on a speleothem record from central-eastern Brazil. Geology, Vol. 39, No. 11, pp. 1075-1078. DOI: 10.1130/G32098.1 START YEAR: 10200 cal yr BP * END YEAR: 1290 cal yr BP -44.3656 -14.4227 -44.3656 -14.4227