FN Archimer Export Format
PT J
TI Antarctic contribution to meltwater pulse 1A from reduced Southern Ocean overturning
BT 
AF GOLLEDGE, N. R.
   MENVIEL, L.
   CARTER, L.
   FOGWILL, C. J.
   ENGLAND, M. H.
   CORTESE, G.
   LEVY, R. H.
AS 1:1,2;2:3,4;3:1;4:3;5:3,4;6:2;7:2;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Victoria Univ Wellington, Antarctic Res Ctr, Wellington 6140, New Zealand.
   GNS Sci, Avalon, Lower Hutt 5011, New Zealand.
   Univ New S Wales, Climate Change Res Ctr, Sydney, NSW 2052, Australia.
   ARC Ctr Excellence Climate Syst Sci, Sydney, NSW 2052, Australia.
C2 UNIV WELLINGTON VICTORIA, NEW ZEALAND
   GNS SCI, NEW ZEALAND
   UNIV NEW S WALES, AUSTRALIA
   ARCCSS, AUSTRALIA
IN DOAJ
IF 11.47
TC 125
UR https://archimer.ifremer.fr/doc/00497/60847/64264.pdf
   https://archimer.ifremer.fr/doc/00497/60847/64267.pdf
   https://archimer.ifremer.fr/doc/00497/60847/64268.mov
LA English
DT Article
CR MD159 / PACHIDERME
BO Marion Dufresne
AB During the last glacial termination, the upwelling strength of the southern polar limb of the Atlantic Meridional Overturning Circulation varied, changing the ventilation and stratification of the high-latitude Southern Ocean. During the same period, at least two phases of abrupt global sea-level rise-meltwater pulses-took place. Although the timing and magnitude of these events have become better constrained, a causal link between ocean stratification, the meltwater pulses and accelerated ice loss from Antarctica has not been proven. Here we simulate Antarctic ice sheet evolution over the last 25 kyr using a data-constrained ice-sheet model forced by changes in Southern Ocean temperature from an Earth system model. Results reveal several episodes of accelerated ice-sheet recession, the largest being coincident with meltwater pulse 1A. This resulted from reduced Southern Ocean overturning following Heinrich Event 1, when warmer subsurface water thermally eroded grounded marine-based ice and instigated a positive feedback that further accelerated ice-sheet retreat. 
PY 2014
PD SEP
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 5
IS 5107
UT 000343030300001
DI 10.1038/ncomms6107
ID 60847
ER

EF