FN Archimer Export Format
PT J
TI Combining Argo profiles with a general circulation model in the North Atlantic. Part 1: Estimation of hydrographic and circulation anomalies from synthetic profiles, over a year
BT 
AF FORGET, Gael
   FERRON, Bruno
   MERCIER, Herle
AS 1:1,3;2:2,3;3:2,3;
FF 1:;2:;3:;
C1 MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA.
   CNRS Ifremer UBO, UMR 6523, Lab Phys Oceans, F-29280 Plouzane, France.
C2 MIT, USA
   CNRS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-int-hors-europe
IF 2.225
TC 16
TU CNRS
   IFREMER
   IRD
   UNIVERSITE BREST
UR https://archimer.ifremer.fr/doc/2008/publication-3721.pdf
LA English
DT Article
DE ;General circulation model;Argo;Twin experiment;4DVAR;Data assimilation
AB Argo is a global array of profiling floats that provides temperature (T) and salinity (S) profiles from 2000 m to the surface every ten days with a nominal spatial resolution of 3 degrees. Here we present idealized experiments where the adjoint method is used to synthesize simulated sets of Argo profiles with a general circulation model, over a one-year period, in the North Atlantic. Using a number of drifting profilers consistent with Argo deployment objectives, the simulated array permits one to identify large-scale anomalies in the hydrography and circulation, despite the presence of a simulated eddy noise of large amplitude. Model dynamics provide an objective means to distinguish eddy noise from large-scale oceanic variability, and to infer the absolute velocity field (including abyssal velocities and sea surface height) from sets of Argo profiles of T and S. In particular, our idealized experiments suggest that volume and heat transports can be efficiently constrained by sets of Argo profiles. Increasing the number of Argo floats seems to be an adequate strategy to further reduce errors in circulation estimates.
PY 2008
SO Ocean Modelling
SN 1463-5003
PU Elsevier
VL 20
IS 1
UT 000253019300001
BP 1
EP 16
DI 10.1016/j.ocemod.2007.06.001
ID 3721
ER

EF