FN Archimer Export Format
PT J
TI Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3
BT 
AF ZHANG, Xiao
   PRANGE, Matthias
   MERKEL, Ute
   SCHULZ, Michael
AS 1:1,2;2:1,2;3:1,2;4:1,2;
FF 1:;2:;3:;4:;
C1 Univ Bremen, MARUM Ctr Marine Environm Sci, D-28359 Bremen, Germany.
   Univ Bremen, Fac Geosci, D-28359 Bremen, Germany.
C2 UNIV BREMEN, GERMANY
   UNIV BREMEN, GERMANY
IF 4.212
TC 21
UR https://archimer.ifremer.fr/doc/00351/46267/46052.pdf
LA English
DT Article
CR IMAGES 1-MD101
   MD 123 / GEOSCIENCES 1
BO Marion Dufresne
DE ;Atlantic meridional overturning circulation;Dansgaard-Oeschger events;global climate modeling
AB Pronounced millennial-scale climate variability during marine isotope stage 3 (MIS3) is considered to be linked to changes in the state of the Atlantic meridional overturning circulation (AMOC), i.e., a warm interstadial/cold stadial state corresponds to a strong/weak AMOC. Based on a series of freshwater hosing/extraction experiments with the state-of-the-art Community Climate System Model version 3, we construct a global spatial fingerprint of oceanic temperature anomalies in response to AMOC changes under MIS3 boundary conditions. Highest sensitivity to AMOC changes, especially in summer, is found in northeastern North Atlantic sea surface temperature, but a characteristic temperature fingerprint is also found at subsurface levels. After testing significance of the linear sea surface temperature (SST)-AMOC regressions, the model results are combined with paleo-SST records to estimate the magnitude of millennial-scale Dansgaard-Oeschger AMOC variations during MIS3. The results suggest a mean difference in AMOC strength between interstadial and (non-Heinrich) stadial states of 9.21.2Sv (1 sigma).
PY 2015
PD MAR
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 42
IS 6
UT 000353170000037
BP 1903
EP 1911
DI 10.1002/2014GL063003
ID 46267
ER

EF