Lake N3, Greenland 7,800 Year Leaf Wax d2H and Geochemical Data Thomas, E.K.; Briner, J.P.; Ryan-Henry, J.J.; Huang, Y. Thomas, E.K. Briner, J.P. Ryan-Henry, J.J. Huang, Y. sea ice earth science/paleoclimate/paleolimnology (age,null,range lower bound,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,based on mean sediment age) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,one standard deviation,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 13C,organic matter,null,per mil,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 2H,C26 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 2H,C24 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,composited,null,N,null) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,replicate) earth science/paleoclimate/paleolimnology (nitrogen,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (delta 15N,organic matter,null,per mil,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,550 degrees C) earth science/paleoclimate/paleolimnology (mineral matter,sediment,null,percent,null,paleolimnology,null,null,N,total sediment minus biogenic silica minus carbon minus nitrogen) earth science/paleoclimate/paleolimnology (age,null,range upper bound,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 2H,C26 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (number of samples,null,null,null,null,paleolimnology,null,null,N,C26 n-alkanoic acid) earth science/paleoclimate/paleolimnology (delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (number of samples,null,null,null,null,paleolimnology,null,null,N,C28 n-alkanoic acid) earth science/paleoclimate/paleolimnology (delta 2H,C24 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 2H,C28 n-alkanoic acid,one standard deviation,per mil VSMOW,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (organic carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (carbon/nitrogen,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (number of samples,null,null,null,null,paleolimnology,null,null,N,C24 n-alkanoic acid) earth science/paleoclimate/paleolimnology (Lake N3>LATITUDE 68.6394>LONGITUDE -50.9869) Precipitation is predicted to increase in the Arctic as temperature increases and sea ice retreats. Yet, the mechanisms controlling precipitation in the Arctic are poorly understood and quantified only by the short, sparse instrumental record. We use hydrogen isotope ratios (d2H) of lipid biomarkers in lake sediments from western Greenland to reconstruct precipitation seasonality and summer temperature during the past 8 kyr. Aquatic biomarker d2H was 100 per mil more negative from 6 to 4ka than during the early and late Holocene, which we interpret to reflect increased winter snowfall. The middle Holocene also had high summer air temperature, decreased early winter sea ice in Baffin Bay and the Labrador Sea, and a strong, warm West Greenland Current. These results corroborate model predictions of winter snowfall increases caused by sea ice retreat, and furthermore suggest that warm currents advecting more heat into the polar seas may enhance Arctic evaporation and snowfall. STUDY NOTES: Aquatic plant leaf wax hydrogen isotope (d2H) and geochemical data from sediments collected in lake N3, western Greenland. Data include hydrogen isotopes of the C24, C26, and C28 n-alkanoic acids (aquatic plant biomarkers), plus Loss-On-Ignition, Biogenic Silica, Carbon and Nitrogen concentrations and isotopes (d13C and d15N), and mineral matter concentration. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Thomas, E.K. Investigator : Briner, J.P. Investigator : Ryan-Henry, J.J. Investigator : Huang, Y. 2016-05-04 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20126 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016mineral.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016cn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c26d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c24d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c28d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016mineral.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016cn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c26d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c24d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c28d2h.txt English https://www.ncdc.noaa.gov/paleo/study/20126 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016mineral.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016cn.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c26d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016loi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c24d2h.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/n3-2016c28d2h.txt Elizabeth K. Thomas, Jason P. Briner, John J. Ryan-Henry and Yongsong Huang 2016A major increase in winter snowfall during the middle Holocene on western Greenland caused by reduced sea ice in Baffin Bay and the Labrador SeaGeophysical Research Letters10.1002/2016GL068513http://onlinelibrary.wiley.com/doi/10.1002/2016GL068513/full START YEAR: 7901 cal yr BP * END YEAR: -51 cal yr BP -50.9869 68.6394 -50.9869 68.6394