title: 10Be climate fingerprints during the Eemian in the NEEM ice core, Greenland.
abstract: Several deep Greenland ice cores have been retrieved, however, capturing the Eemian period has been problematic due to stratigraphic disturbances in the ice. The new Greenland deep ice core from the NEEM site (77.45 °N, 51.06 °W, 2450 m.a.s.l) recovered a relatively complete Eemian record. Here we discuss the cosmogenic (10)Be isotope record from this core. The results show Eemian average (10)Be concentrations about 0.7 times lower than in the Holocene which suggests a warmer climate and approximately 65-90% higher precipitation in Northern Greenland compared to today. Effects of shorter solar variations on (10)Be concentration are smoothed out due to coarse time resolution, but occurrence of a solar maximum at 115.26-115.36 kyr BP is proposed. Relatively high (10)Be concentrations are found in the basal ice sections of the core which may originate from the glacial-interglacial transition and relate to a geomagnetic excursion about 200 kyr BP.
authors.affiliation: Uppsala University, Department of Earth Sciences, Villavägen 16 B, 752 36 Uppsala, Sweden.
authors.forename: Anna
authors.initials: A
authors.lastname: Sturevik-Storm
authors.affiliation: 1] Uppsala University, Department of Earth Sciences, Villavägen 16 B, 752 36 Uppsala, Sweden [2] Department of Geology, United Arab Emirates University, Al Ain, UAE.
authors.forename: Ala
authors.initials: A
authors.lastname: Aldahan
authors.affiliation: Tandem Laboratory, Uppsala University, Lägerhyddsvägen 1, 751 20 Uppsala, Sweden.
authors.forename: Göran
authors.initials: G
authors.lastname: Possnert
authors.affiliation: Uppsala University, Department of Earth Sciences, Villavägen 16 B, 752 36 Uppsala, Sweden.
authors.forename: Ann-Marie
authors.initials: AM
authors.lastname: Berggren
authors.affiliation: Department of Geology, Lund University, Sölvegatan 12, 223 62 Lund, Sweden.
authors.forename: Raimund
authors.initials: R
authors.lastname: Muscheler
authors.affiliation: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen K, Denmark.
authors.forename: Dorthe
authors.initials: D
authors.lastname: Dahl-Jensen
authors.affiliation: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen K, Denmark.
authors.forename: Bo M
authors.initials: BM
authors.lastname: Vinther
authors.affiliation: Sodankylä Geophysical Observatory (Oulu unit) and Physics Dept., 90014 University of Oulu, Finland.
authors.forename: Ilya
authors.initials: I
authors.lastname: Usoskin