FN Archimer Export Format
PT J
TI Surprising return of deep convection to the subpolar North Atlantic Ocean in winter 2007-2008
BT 
AF VAGE, Kjetil
   PICKART, Robert S.
   THIERRY, Virginie
   REVERDIN, Gilles
   LEE, Craig M.
   PETRIE, Brian
   AGNEW, Tom A.
   WONG, Amy
   RIBERGAARD, Mads H.
AS 1:1;2:1;3:2;4:3;5:4;6:5;7:6;8:6;9:7;
FF 1:;2:;3:PDG-DOP-DCB-OPS-LPO;4:;5:;6:;7:;8:;9:;
C1 Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
   IFREMER, CNRS, IRD,UMR 6523, UBO,Lab Phys Oceans, F-29280 Plouzane, France.
   Lab Oceanog Dynam & Climatol, FR-75252 Paris, France.
   Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA.
   Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada.
   Meteorol Serv Canada, Downsview, ON M3H 5T4, Canada.
   Danish Meteorol Inst, DK-2100 Copenhagen, Denmark.
C2 WOODS HOLE, USA
   IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV WASHINGTON, USA
   MPO, CANADA
   METEOROL SERV CANADA, CANADA
   DANISH METEOROL INST, DENMARK
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 8.108
TC 140
TU CNRS
   IFREMER
   IRD
   UNIVERSITE BREST
   UNIVERSITE PARIS 6
UR https://archimer.ifremer.fr/doc/2009/publication-6415.pdf
LA English
DT Article
CR OVIDE
AB In the process of open-ocean convection in the subpolar North Atlantic Ocean, surface water sinks to depth as a distinct water mass, the characteristics of which affect the meridional overturning circulation and oceanic heat flux. In addition, carbon is sequestered from the atmosphere in the process. In recent years, this convection has been shallow or non-existent, which could be construed as a consequence of a warmer climate. Here we document the return of deep convection to the subpolar gyre in both the Labrador and Irminger seas in the winter of 2007-2008. We use profiling float data from the Argo programme to document deep mixing. Analysis of a variety of in situ, satellite and reanalysis data shows that contrary to expectations the transition to a convective state took place abruptly, without going through a phase of preconditioning. Changes in hemispheric air temperature, storm tracks, the flux of fresh water to the Labrador Sea and the distribution of pack ice all contributed to an enhanced flux of heat from the sea to the air, making the surface water sufficiently cold and dense to initiate deep convection. Given this complexity, we conclude that it will be difficult to predict when deep mixing may occur again.
PY 2009
SO Nature Geoscience
SN 1752-0894
PU Nature
VL 2
IS 1
UT 000262638500024
BP 67
EP 72
DI 10.1038/NGEO382
ID 6415
ER

EF