(10)Be climate fingerprints during the Eemian in the NEEM ice core, Greenland.
(2014) In Scientific Reports 4.- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4738793
- author
- Sturevik-Storm, Anna ; Aldahan, Ala ; Possnert, Göran ; Berggren, Ann-Marie ; Muscheler, Raimund LU ; Dahl-Jensen, Dorthe ; Vinther, Bo M and Usoskin, Ilya
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 4
- article number
- 6408
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:25266953
- wos:000342448600001
- scopus:84923376346
- pmid:25266953
- ISSN
- 2045-2322
- DOI
- 10.1038/srep06408
- language
- English
- LU publication?
- yes
- id
- 9627a002-6c0b-4b7b-9350-768f0e5800af (old id 4738793)
- date added to LUP
- 2016-04-01 13:41:32
- date last changed
- 2022-02-04 08:47:56
@article{9627a002-6c0b-4b7b-9350-768f0e5800af, 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.}}, author = {{Sturevik-Storm, Anna and Aldahan, Ala and Possnert, Göran and Berggren, Ann-Marie and Muscheler, Raimund and Dahl-Jensen, Dorthe and Vinther, Bo M and Usoskin, Ilya}}, issn = {{2045-2322}}, language = {{eng}}, publisher = {{Nature Publishing Group}}, series = {{Scientific Reports}}, title = {{(10)Be climate fingerprints during the Eemian in the NEEM ice core, Greenland.}}, url = {{http://dx.doi.org/10.1038/srep06408}}, doi = {{10.1038/srep06408}}, volume = {{4}}, year = {{2014}}, }