Lake El'gygytgyn, NE Russia, Plio/Pleistocene Multiproxy Lake Sediment Data Brigham-Grette, J.; Melles, M.; Minyuk, P.S.; Andreev, A.A.; Tarasov, P.E.; DeConto, R.M.; Koenig, S.; Nowaczyk, N.R.; Wennrich, V.; Rosén, P.; Haltia, E.; Cook, T.L.; Gebhardt, C.; Meyer-Jacob, C.; Snyder, J.; Herzschuh, U. Brigham-Grette, J. Melles, M. Minyuk, P.S. Andreev, A.A. Tarasov, P.E. DeConto, R.M. Koenig, S. Nowaczyk, N.R. Wennrich, V. Rosén, P. Haltia, E. Cook, T.L. Gebhardt, C. Meyer-Jacob, C. Snyder, J. Herzschuh, U. Arctic earth science/paleoclimate/climate reconstructions|pollen (precipitation,null,unspecified error upper bound,millimeter per year,annual,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/climate reconstructions|pollen (surface temperature,null,null,degree Celsius,warmest month,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/climate reconstructions|pollen (surface temperature,null,unspecified error upper bound,degree Celsius,warmest month,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/paleolimnology (age at sample start,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (notes,sediment,null,null,null,paleolimnology,null,null,C,facies) earth science/paleoclimate/climate reconstructions|paleolimnology (age,null,null,calendar kiloyear before present,null,climate reconstructions|paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample start,null,null,meter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/climate reconstructions|pollen (precipitation,null,null,millimeter per year,annual,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/climate reconstructions|pollen (precipitation,null,unspecified error lower bound,millimeter per year,annual,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth,null,null,meter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (biogenic silica,sediment,null,gram per square meter per year,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age at sample end,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (depth at sample end,null,null,meter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (silicon/titanium,sediment,null,dimensionless,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/climate reconstructions|pollen (surface temperature,null,unspecified error lower bound,degree Celsius,warmest month,climate reconstructions|pollen,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,null,calendar kiloyear before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-4 units) earth science/paleoclimate/paleolimnology (Lake El'gygytgyn>LATITUDE 67.4997>LONGITUDE 172.1038) Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time series. Evidence from Lake El'gygytgyn, in northeast (NE) Arctic Russia, shows that 3.6 to 3.4 million years ago, summer temperatures were ~8C warmer than today, when the partial pressure of CO2 was ~400 parts per million. Multiproxy evidence suggests extreme warmth and polar amplification during the middle Pliocene, sudden stepped cooling events during the Pliocene-Pleistocene transition, and warmer than present Arctic summers until ~2.2 million years ago, after the onset of Northern Hemispheric glaciation. Our data are consistent with sea-level records and other proxies indicating that Arctic cooling was insufficient to support large-scale ice sheets until the early Pleistocene. STUDY NOTES: Multiproxy sediment data from Lake El'gygytgyn, NE Russia for the period between 2.2 and 3.6 Ma. Data include sediment facies and mass movement deposits, sediment physical properties, pollen data, pollen derived temperature and precipitation reconstruction data, biogenic silica percentages and accumulation rates, and elemental ratio derived from X-ray fluorescence scanning. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Brigham-Grette, J. Investigator : Melles, M. Investigator : Minyuk, P.S. Investigator : Andreev, A.A. Investigator : Tarasov, P.E. Investigator : DeConto, R.M. Investigator : Koenig, S. Investigator : Nowaczyk, N.R. Investigator : Wennrich, V. Investigator : Rosén, P. Investigator : Haltia, E. Investigator : Cook, T.L. Investigator : Gebhardt, C. Investigator : Meyer-Jacob, C. Investigator : Snyder, J. Investigator : Herzschuh, U. 2013-05-17 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14415 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013si-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013facies.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013turb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi-accum.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013recons.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013ms.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013si-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013facies.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013turb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi-accum.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013recons.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013ms.txt English https://www.ncdc.noaa.gov/paleo/study/14415 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013si-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013facies.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013turb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013pollen.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013biosi-accum.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013recons.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2013ms.txt Julie Brigham-Grette, Martin Melles, Pavel Minyuk, Andrei Andreev, Pavel Tarasov, Robert DeConto, Sebastian Koenig, Norbert Nowaczyk, Volker Wennrich, Peter Rosén, Eeva Haltia, Tim Cook, Catalina Gebhardt, Carsten Meyer-Jacob, Jeff Snyder, Ulrike Herzschuh2013Pliocene Warmth, Polar Amplification, and Stepped Pleistocene Cooling Recorded in NE Arctic RussiaScience34061391421-142710.1126/science.1233137 http://science.sciencemag.org/content/340/6139/1421 START YEAR: 3587976 cal yr BP * END YEAR: 124951 cal yr BP 172.1038 67.4997 172.1038 67.4997