FN Archimer Export Format
PT J
TI Evidence for ephemeral middle Eocene to early Oligocene Greenland glacial ice and pan-Arctic sea ice
BT 
AF TRIPATI, Aradhna
   DARBY, Dennis
AS 1:1,2,3;2:4;
FF 1:;2:;
C1 Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Dept Atmospher & Ocean Sci,Calif Nanosyst Inst, Inst Environm & Sustainabil,Inst Geophys & Planet, Los Angeles, CA 90095 USA.
   Univ Brest, European Inst Marine Sci IUEM, UMR 6538, Domaines Ocean, Rue Dumont DUrville, F-29280 Plouzane, France.
   IFREMER, F-29280 Plouzane, France.
   Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, Norfolk, VA 23529 USA.
C2 UNIV CALIF LOS ANGELES, USA
   UBO, FRANCE
   IFREMER, FRANCE
   UNIV OLD DOMINION, USA
SI BREST
SE PDG-REM-GM-LCG
UM LGO
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 11.878
TC 48
UR https://archimer.ifremer.fr/doc/00434/54587/55976.pdf
   https://archimer.ifremer.fr/doc/00434/54587/55977.pdf
   https://archimer.ifremer.fr/doc/00434/54587/55978.pdf
   https://archimer.ifremer.fr/doc/00434/54587/55979.xlsx
   https://archimer.ifremer.fr/doc/00434/54587/55980.xlsx
   https://archimer.ifremer.fr/doc/00434/54587/55981.xlsx
   https://archimer.ifremer.fr/doc/00434/54587/55982.xlsx
LA English
DT Article
AB Earth's modern climate is defined by the presence of ice at both poles, but that ice is now disappearing. Therefore understanding the origin and causes of polar ice stability is more critical than ever. Here we provide novel geochemical data that constrain past dynamics of glacial ice on Greenland and Arctic sea ice. Based on accurate source determinations of individual ice-rafted Fe-oxide grains, we find evidence for episodic glaciation of distinct source regions on Greenland as far-ranging as similar to 68 degrees N and similar to 80 degrees N synchronous with ice-rafting from circum-Arctic sources, beginning in the middle Eocene. Glacial intervals broadly coincide with reduced CO2, with a potential threshold for glacial ice stability near similar to 500 p.p.m.v. The middle Eocene represents the Cenozoic onset of a dynamic cryosphere, with ice in both hemispheres during transient glacials and substantial regional climate heterogeneity. A more stable cryosphere developed at the Eocene-Oligocene transition, and is now threatened by anthropogenic emissions. 
PY 2018
PD MAR
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 9
IS 1038
UT 000427122100002
DI 10.1038/s41467-018-03180-5
ID 54587
ER

EF