Portugal 222,000 Year Speleothem Stable Isotope Data Denniston, R.F.; Houts, A.N.; Asmerom, Y.; Wanamaker, A.D.; Haws, J.A.; Polyak, V.J.; Thatcher, D.L.; Altan-Ochir, S.; Borowske, A.C.; Breitenbach, S.F.M.; Ummenhofer, C.C.; Regala, F.T.; Benedetti, M.M.; Bicho, N.F. Denniston, R.F. Houts, A.N. Asmerom, Y. Wanamaker, A.D. Haws, J.A. Polyak, V.J. Thatcher, D.L. Altan-Ochir, S. Borowske, A.C. Breitenbach, S.F.M. Ummenhofer, C.C. Regala, F.T. Benedetti, M.M. Bicho, N.F. earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Gruta do Casal da Lebre>LATITUDE 39.3>LONGITUDE -9.27) (Buraca Gloriosa>LATITUDE 39.53>LONGITUDE -8.78) Close coupling of Iberian hydroclimate and North Atlantic sea surface temperature (SST) during recent glacial periods has been identified through the analysis of marine sediment and pollen grains co-deposited on the Portuguese continental margin. While offering precisely correlatable records, these time series have lacked a directly dated, site-specific record of continental Iberian climate spanning multiple glacial cycles as a point of comparison. Here we present a high-resolution, multi-proxy (growth dynamics and d13C, d18O, and d234U values) composite stalagmite record of hydroclimate from two caves in western Portugal across the majority of the last two glacial cycles (~220 ka). At orbital and millennial scales, stalagmite-based proxies for hydroclimate proxies covaried with SST, with elevated d13C, d18O, and d234U values and/or growth hiatuses indicating reduced effective moisture coincident with periods of lowered SST during major ice-rafted debris events, in agreement with changes in palynological reconstructions of continental climate. While in many cases the Portuguese stalagmite record can be scaled to SST, in some intervals the magnitudes of stalagmite isotopic shifts, and possibly hydroclimate, appear to have been somewhat decoupled from SST. STUDY NOTES: Stable isotope (d18O and d13C) data from 5 stalagmites collected in 2 Portuguese caves (Buraca Gloriosa and Gruta do Casal da Lebre), covering the past 222 KYr. Note: An error in the age model for stalagmite BG67 was identified after publication of these data. However, since this error does not shift the time series outside the reported uncertainty window, it does not in any way impact the findings or interpretations presented in the manuscript. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Denniston, R.F. Investigator : Houts, A.N. Investigator : Asmerom, Y. Investigator : Wanamaker, A.D. Investigator : Haws, J.A. Investigator : Polyak, V.J. Investigator : Thatcher, D.L. Investigator : Altan-Ochir, S. Investigator : Borowske, A.C. Investigator : Breitenbach, S.F.M. Investigator : Ummenhofer, C.C. Investigator : Regala, F.T. Investigator : Benedetti, M.M. Investigator : Bicho, N.F. 2018-12-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/25810 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/lebre2018iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/gloriosa2018iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/lebre2018iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/gloriosa2018iso.txt English https://www.ncdc.noaa.gov/paleo/study/25810 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/lebre2018iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/gloriosa2018iso.txt Rhawn F. Denniston, Amanda N. Houts, Yemane Asmerom, Alan D. Wanamaker Jr., Jonathan A. Haws, Victor J. Polyak, Diana L. Thatcher, Setsen Altan-Ochir, Alyssa C. Borowske, Sebastian F.M. Breitenbach, Caroline C. Ummenhofer, Frederico T. Regala, Michael M. Benedetti, and Nuno F. Bicho2018A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cyclesClimate of the Past14121893-191310.5194/cp-14-1893-2018https://www.clim-past.net/14/1893/2018/ START YEAR: 222448 cal yr BP * END YEAR: 1319 cal yr BP -9.27 39.3 -8.78 39.53