Ammersee 15,000 Year Ostracod Oxygen Isotope Data von Grafenstein, U.; Erlenkeuser, H.; Brauer, A.; Jouzel, J.; Johnsen, S.J. von Grafenstein, U. Erlenkeuser, H. Brauer, A. Jouzel, J. Johnsen, S.J. earth science/paleoclimate/paleolimnology (delta 18O,ostracod,null,per mil PDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/paleolimnology (sample identification,null,null,null,null,paleolimnology,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleolimnology (age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleolimnology (delta 18O,delta 18O|precipitation,null,per mil PDB,null,climate reconstructions|paleolimnology,null,null,N,reconstruction predictor: ostracod delta 18O; reconstruction technique: Adjust for evaporative enrichment; reconstruction technique: Adjust for temperature-dependent fractionation; reconstruction technique: Adjust for vital effects) earth science/paleoclimate/climate reconstructions|paleolimnology (depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (Ammersee>LATITUDE 47.9925>LONGITUDE 11.1308) Oxygen-isotope ratios of precipitation (delta 18OP) inferred from deep-lake ostracods from the Ammersee (southern Germany) provide a climate record with decadal resolution. The record in detail shows many of the rapid climate shifts seen in central Greenland ice cores between 15,000 and 5000 years before the present (B.P.). Negative excursions in the estimated delta 18OP from both of these records likely reflect short weakenings of the thermohaline circulation caused by episodic discharges of continental freshwater into the North Atlantic. Deviating millennial-scale trends, however, indicate that climate gradients between Europe and Greenland changed systematically, reflecting a gradual rearrangement of North Atlantic circulation during deglaciation. STUDY NOTES: Ammersee ostracod oxygen isotope data. Oxygen-isotope values of calcite shells of Candona sp. (juveniles of Fabaeformiscandona levanderi and Fabaeformiscandona tricicatricosa) from sediment cores AS92-5, AS93-1, and AS96-1. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : von Grafenstein, U. Investigator : Erlenkeuser, H. Investigator : Brauer, A. Investigator : Jouzel, J. Investigator : Johnsen, S.J. 2003-10-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/5462 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/germany/ammersee_1999.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/germany/ammersee_1999.txt English https://www.ncdc.noaa.gov/paleo/study/5462 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/germany/ammersee_1999.txt von Grafenstein, U., H. Erlenkeuser, A. Brauer, J. Jouzel, S.J. Johnsen. 1999. A Mid-European Decadal Isotope-Climate Record from 15,500 to 5000 Years B.P.. Science Vol. 284, Number 5420, pp. 1654-1657, Jun 4 1999 START YEAR: 15588 cal yr BP * END YEAR: -12 cal yr BP 11.1308 47.9925 11.1308 47.9925