noaa-cave-19219 North European Alps Termination-II Stalagmite Stable Isotope Data Moseley, G.E.; Spötl, C.; Cheng, H.; Boch, R.; Min, A.; Edwards, R.L. North European Alps Termination-II Stalagmite Stable Isotope Data 2015-09-15 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19219 Investigator G.E. Moseley Investigator C. Spötl Investigator H. Cheng Investigator R. Boch Investigator A. Min Investigator R.L. Edwards earth science paleoclimate speleothems depth,null,null,millimeter,null,speleothems,null,null,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 margin of error,calendar year,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 delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems carbon isotopes earth science paleoclimate speleothems oxygen isotopes geoscientificInformation 134085 cal yr BP 110844 cal yr BP Complete 47.38 47.4333 9.8667 10.15 1240 1270 Continent Europe Western Europe Germany Hölloch Cave>LATITUDE 47.38>LONGITUDE 10.15 Continent Europe Western Europe Austria Schneckenloch Cave>LATITUDE 47.4333>LONGITUDE 9.8667 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Gina E. Moseley, Christoph Spötl, Hai Cheng, Ronny Boch, Angela Min, R. Lawrence Edwards 2015 Quaternary Science Reviews 10.1016/j.quascirev.2015.07.012 http://www.sciencedirect.com/science/article/pii/S0277379115300512

Understanding the sequence of events that take place during glacial-interglacial climate transitions is important for improving our knowledge of abrupt climate change. Here, we present a new stacked, high-resolution, precisely-dated speleothem stable isotope record from the northern Alps, which provides an important record of temperature and moisture-source changes between 134 and 111 ka for Europe and the wider North Atlantic realm. The record encompasses the penultimate deglaciation (Termination II (TII)), which lies beyond the limit of radiocarbon dating, thus providing an important new archive for a crucial period of rapid paleoclimate change. Warmer and wetter ice-free conditions were achieved by 134.1 ± 0.7 ka (modelled ages) as indicated by the presence of liquid water at the site. Temperatures warmed further at 133.7 ± 0.5 ka and led into an interstadial, synchronous with slightly elevated monsoon strength during the week monsoon interval. The interstadial experienced an unstable climate with a trough in temperature associated with a slowdown in Atlantic Meridional Overturning Circulation (AMOC) and a reduction in North Atlantic Deep Water (NADW) formation. The interstadial ended with a more extreme cold reversal lasting 500 years in which NADW formation remained active but the subpolar gyre weakened allowing cool polar waters to penetrate southwards. The main warming associated with TII was very rapid, taking place between 130.9 ± 0.9 and 130.7 ± 0.9 ka coeval with initial monsoon strengthening. Temperatures then plateaued before being interrupted by a 600-year cold event at 129.1 ± 0.6 ka, associated once again with penetration of polar waters southwards into the North Atlantic and a slowdown in monsoon strengthening. Sub-orbital climate oscillations were thus a feature of TII in the north Atlantic realm, which broadly resemble the Bølling/Allerød-Younger Dryas-8.2 ka event pattern of change observed in Termination I despite monsoon records indicating strong differences between the last and penultimate deglaciation. STUDY NOTES: Northern Alps speleothem stable isotope (d18O and d13C) data from 2 caves, spanning the penultimate deglaciation (Termination II). Data from Schneckenloch Cave, Austria (115.3-134.1kY) and Hölloch Cave, Germany (110.8-131.8kY) with age models.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/austria/moseley2015schneckenloch.txt Data File; Schneckenloch Cave Stable Isotope Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/germany/moseley2015holloch.txt Data File; Hölloch Cave Stable Isotope Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11