Cueva de Asiul, Spain 12,000 Year Speleothem Oxygen Isotope Data Smith, A.C.; Wynn, P.M.; Barker, P.A.; Leng, M.J.; Noble, S.R.; Tych, W. Smith, A.C. Wynn, P.M. Barker, P.A. Leng, M.J. Noble, S.R. Tych, W. earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,standard deviation unit,null,speleothems,composited|normalized,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,standard deviation unit,null,speleothems,composited|detrended|normalized,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar year before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (age,null,95% confidence interval upper bound,calendar year before present,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,95% confidence interval lower bound,calendar year before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (Cueva de Asiul>LATITUDE 43.32>LONGITUDE -3.59) Century-to-millennial scale fluctuations in precipitation and temperature are an established feature of European Holocene climates. Changes in moisture delivery are driven by complex interactions between ocean moisture sources and atmospheric circulation modes, making it difficult to resolve the drivers behind millennial scale variability in European precipitation. Here, we present two overlapping decadal resolution speleothem oxygen isotope (d18O) records from a cave on the Atlantic coastline of northern Iberia, covering the period 12.1-0 ka. Speleothem d18O reveals nine quasi-cyclical events of relatively wet-to-dry climatic conditions during the Holocene. Dynamic Harmonic Regression modelling indicates that changes in precipitation occurred with a ~1500 year frequency during the late Holocene and at a shorter length during the early Holocene. The timing of these cycles coincides with changes in North Atlantic Ocean conditions, indicating a connectivity between ocean conditions and Holocene moisture delivery. Early Holocene climate is potentially dominated by freshwater outburst events, whilst ~1500 year cycles in the late Holocene are more likely driven by changes internal to the ocean system. This is the first continental record of its type that clearly demonstrates millennial scale connectivity between the pulse of the ocean and precipitation over Europe through the entirety of the Holocene. STUDY NOTES: Oxygen isotope (d18O) data from 2 stalagmites collected in Cueva de Asiul, Matienzo, Cantabria, Spain, covering the past 12,000 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Smith, A.C. Investigator : Wynn, P.M. Investigator : Barker, P.A. Investigator : Leng, M.J. Investigator : Noble, S.R. Investigator : Tych, W. 2016-04-25 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20082 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asr.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asm.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asr.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asm.txt English https://www.ncdc.noaa.gov/paleo/study/20082 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016composite.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asr.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/spain/asiul2016asm.txt Andrew C. Smith, Peter M. Wynn, Philip A. Barker, Melanie J. Leng, Stephen R. Noble, and Wlodek Tych2016North Atlantic forcing of moisture delivery to Europe throughout the HoloceneScientific Reports24745610.1038/srep24745http://www.nature.com/articles/srep24745 START YEAR: 12153 cal yr BP * END YEAR: -62 cal yr BP -3.59 43.32 -3.59 43.32