FN Archimer Export Format
PT J
TI Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years
BT 
AF HALL, I. R.
   BOESSENKOOL, K. P.
   BARKER, S.
   MCCAVE, I. N.
   ELDERFIELD, H.
AS 1:1;2:1;3:1;4:2;5:2;
FF 1:;2:;3:;4:;5:;
C1 Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3YE, S Glam, Wales.
   Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England.
C2 UNIV CARDIFF, UK
   UNIV CAMBRIDGE, UK
IF 4.03
TC 13
UR https://archimer.ifremer.fr/doc/00231/34203/32762.pdf
LA English
DT Article
CR IMAGES 1-MD101
BO Marion Dufresne
AB The subpolar North Atlantic Ocean (SPNA) is of key importance for modulating the climate of NW Europe because of heat loss to the atmosphere from the North Atlantic Current. Although hydrographic properties of the surface SPNA vary on interannual to multidecadal timescales, hydrographic time series scarcely extend back beyond the 1950s. We present a 230 year long record of SPNA surface conditions reconstructed from a very high accumulation rate core that also registers changes in deep flow speed in the Iceland Basin. A lagged correlation is observed between the records of deep flow speed and stable oxygen isotopic composition of the surface SPNA (delta(18)O(w)), with strongest correlation when the paleoflow speed record leads by 15-20 years. This offset may to some extent reflect size-selective biological mixing of the sediment. Nonetheless, these records reveal a decadal-scale coupling between surface and deep ocean variability over the past 230 years, possibly driven by the North Atlantic Oscillation, with implications for North Atlantic circulation and climate.
PY 2010
PD JUL
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 25
IS 2 / PA2101
UT 000279314900002
BP 1
EP 9
DI 10.1029/2009PA001886
ID 34203
ER

EF