FN Archimer Export Format
PT J
TI Hindcasting the continuum of Dansgaard-Oeschger variability: mechanisms, patterns and timing
BT 
AF MENVIEL, L.
   TIMMERMANN, A.
   FRIEDRICH, T.
   ENGLAND, M. H.
AS 1:1;2:2;3:2;4:1;
FF 1:;2:;3:;4:;
C1 Univ New S Wales, Climate Change Res Ctr, Sydney, NSW, Australia.
   Univ Hawaii, Int Pacific Res Ctr, Honolulu, HI 96822 USA.
C2 UNIV NEW S WALES, AUSTRALIA
   UNIV HAWAII, USA
IN DOAJ
IF 3.382
TC 91
UR https://archimer.ifremer.fr/doc/00274/38487/36951.pdf
   https://archimer.ifremer.fr/doc/00274/38487/81207.pdf
LA English
DT Article
CR IMAGES 1-MD101
   MD 123 / GEOSCIENCES 1
BO Marion Dufresne
AB Millennial-scale variability associated with Dansgaard-Oeschger events is arguably one of the most puzzling climate phenomena ever discovered in paleoclimate archives. Here, we set out to elucidate the underlying dynamics by conducting a transient global hindcast simulation with a 3-D intermediate complexity earth system model covering the period 50 to 30 ka BP. The model is forced by time-varying external boundary conditions (greenhouse gases, orbital forcing, and ice-sheet orography and albedo) and anomalous North Atlantic freshwater fluxes, which mimic the effects of changing northern hemispheric ice volume on millennial timescales. Together these forcings generate a realistic global climate trajectory, as demonstrated by an extensive model/paleo data comparison. Our results are consistent with the idea that variations in ice-sheet calving and subsequent changes of the Atlantic Meridional Overturning Circulation were the main drivers for the continuum of glacial millennial-scale variability seen in paleorecords across the globe.
PY 2014
SO Climate Of The Past
SN 1814-9324
PU Copernicus Gesellschaft Mbh
VL 10
IS 1
UT 000333837600005
BP 63
EP 77
DI 10.5194/cp-10-63-2014
ID 38487
ER

EF