FN Archimer Export Format
PT J
TI The Ocean General Circulation near 1000-m Depth
BT 
AF OLLITRAULT, Michel
   COLIN DE VERDIERE, Alain
AS 1:1;2:2;
FF 1:PDG-ODE-LPO;2:;
C1 IFREMER, Lab Phys Oceans, Ctr Brest, F-29280 Plouzane, France.
   Univ Bretagne Occidentale, Lab Phys Oceans, Brest, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-ODE-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.856
TC 49
UR https://archimer.ifremer.fr/doc/00174/28512/26877.pdf
LA English
DT Article
DE ;Circulation;Dynamics;Currents;Dynamics;Large-scale motions;Ocean circulation
AB The mean ocean circulation near 1000-m depth is estimated with 100-km resolution from the Argo float displacements collected before 1 January 2010. After a thorough validation, the 400 000 or so displacements found in the 950–1150 dbar layer and with parking times between 4 and 17 days allow the currents to be mapped at intermediate depths with unprecedented details. The Antarctic Circumpolar Current (ACC) is the most prominent feature, but western boundary currents (and their recirculations) and alternating zonal jets in the tropical Atlantic and Pacific are also well defined. Eddy kinetic energy (EKE) gives the mesoscale variability (on the order of 10 cm2 s−2 in the interior), which is compared to the surface geostrophic altimetric EKE showing e-folding depths greater than 700 m in the ACC and northern subpolar regions. Assuming planetary geostrophy, the geopotential height of the 1000-dbar isobar is estimated to obtain an absolute and deep reference level worldwide. This is done by solving numerically the Poisson equation that results from taking the divergence of the geostrophic equations on the sphere, assuming Neumann boundary conditions.
PY 2014
PD JAN
SO Journal Of Physical Oceanography
SN 0022-3670
PU Amer Meteorological Soc
VL 44
IS 1
UT 000335802100029
BP 384
EP 409
DI 10.1175/JPO-D-13-030.1
ID 28512
ER

EF