FN Archimer Export Format
PT J
TI Sea surface temperature in the Indian sector of the Southern Ocean over the Late Glacial and Holocene
BT 
AF Orme, Lise C
   Crosta, Xavier
   Miettinen, Arto
   Divine, Dmitry V
   Husum, Katrine
   Isaksson, Elisabeth
   Wacker, Lukas
   Mohan, Rahul
   Ther, Olivier
   Ikehara, Minoru
AS 1:1,2;2:3;3:1,4;4:1,5;5:1;6:1;7:6;8:7;9:3;10:8;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Norwegian Polar Institute, Tromsø, 9296, Norway
   ICARUS, Department of Geography, Maynooth University, Maynooth, Ireland
   UMR 5805 EPOC, Université de Bordeaux, Bordeaux, France
   Faculty of Biological and Environmental Sciences, University of Helsink, Helsinki, 00014, Finland
   Department of Mathematics and Statistics, The Arctic University of Norway, 9037, Tromsø, Norway
   Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
   National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India, Vasco-da-Gama, Goa 403 804, India
   Center for Advanced Marine Core Research, Kochi University, Nankoku, 783-8502, Japan
C2 NORWEGIAN POLAR INST, NORWAY
   UNIV MAYNOOTH, IRELAND
   UNIV BORDEAUX, FRANCE
   UNIV HELSINKI, FINLAND
   UNIV ARCTIC UIT NORWAY, NORWAY
   ETH ZURICH, SWITZERLAND
   NCPOR, INDIA
   UNIV KOCHI, JAPAN
IN DOAJ
IF 4.295
TC 12
UR https://archimer.ifremer.fr/doc/00631/74327/73963.pdf
   https://archimer.ifremer.fr/doc/00631/74327/76616.pdf
   https://archimer.ifremer.fr/doc/00631/74327/76617.pdf
LA English
DT Article
CR MD159 / PACHIDERME
BO Marion Dufresne
AB Centennial and millennial scale variability of Southern Ocean temperature is poorly known, due to both short instrumental records and sparsely distributed high-resolution temperature reconstructions, with evidence for past temperature variability instead coming mainly from ice core records. Here we present a high-resolution (~ 60 year), diatom-based sea-surface temperature (SST) reconstruction from the western Indian sector of the Southern Ocean that spans the interval 14.2 to 1.0 ka BP (calibrated kiloyears before present). During the late deglaciation, the new SST record shows cool temperatures at 14.2–12.9 ka BP and gradual warming between 12.9–11.6 ka BP in phase with atmospheric temperature evolution. This supports that the temperature of the Southern Ocean during the deglaciation was linked with a complex combination of processes and drivers associated with reorganisations of atmospheric and oceanic circulation patterns. Specifically, we suggest that Southern Ocean surface warming coincided, within the dating uncertainties, with the reconstructed slowdown of the Atlantic Meridional Overturning Circulation (AMOC), rising atmospheric CO2 levels, changes in the southern westerly winds and enhanced upwelling. During the Holocene the record shows warm and stable temperatures from 11.6–8.7 ka BP followed by a slight cooling and greater variability from 8.7 to 1 ka BP, with a quasi-periodic variability of 200–260 years as identified by spectral analysis. We suggest that the increased variability during the mid to late Holocene may reflect the establishment of centennial variability in SST connected with changes in the high latitude atmospheric circulation and Southern Ocean convection, as identified in models. 
PY 2020
PD AUG
SO Climate Of The Past
SN 1814-9324
PU Copernicus GmbH
VL 16
IS 4
UT 000562026200001
BP 1451
EP 1467
DI 10.5194/cp-16-1451-2020
ID 74327
ER

EF