FN Archimer Export Format
PT J
TI Variational assimilation of ocean tomographic data: Twin experiments in a quasi-geostrophic model
BT 
AF REMY, Elisabeth
   GAILLARD, Fabienne
   VERRON, J
AS 1:;2:;3:;
FF 1:PDG-DRO-DOPS-LPO;2:PDG-DRO-DOPS-LPO;3:;
C1 IFREMER, Lab Phys Oceans, F-29280 Plouzane, France.
   Scripps Inst Oceanog, La Jolla, CA USA.
   Lab Ecoulements Geophys & Ind, Grenoble, France.
C2 IFREMER, FRANCE
   SCRIPPS INST OCEANOG, USA
   LAB ECOULEMENTS GEOPHYS & IND, FRANCE
SI BREST
SE PDG-DRO-DOPS-LPO
IN WOS Ifremer jusqu'en 2018
IF 2.146
TC 15
UR https://archimer.ifremer.fr/doc/00000/10098/105456.pdf
LA English
DT Article
DE ;ocean acoustic tomography;western Mediterranean Sea
AB The possibility of using tomography data as a constraint in variational data assimilation is explored by performing twin experiments. Realistic travel-time data are generated in a quasi-geostrophic model applied to the western Mediterranean Sea. After checking the robustness of the method with this dataset, a sensitivity study analyses the propagation of information by the model, and tests the effect of different parameters such as the starting point of the optimization or the length of the assimilation period. It appears that the variational method is well adapted to the nature of tomographic data that provide at the same time high time resolution and space integrals. The results clearly show the ability of this dataset to recover the temporal evolution of heat content in each layer and improve various components of the circulation described by the model. Tomography must then be considered as an important source of information that may contribute with altirnetry or local in situ measurement to the description of the ocean state and its evolution.
PY 2002
PD JUN
SO Quarterly Journal Of The Royal Meteorological Society
SN 0035-9009
PU Royal Meteorological Soc
VL 128
IS 583
UT 000177220200017
BP 1739
EP 1758
DI 10.1002/qj.200212858317
ID 10098
ER

EF