FN Archimer Export Format
PT J
TI Generation of tropical instability waves in the Atlantic Ocean - art. no. C08034
BT 
AF VON SCHUCKMANN, Karina
   BRANDT, P
   EDEN, C
AS 1:1,3;2:2;3:2;
FF 1:;2:;3:;
C1 IFREMER, Ctr Brest, F-29280 Plouzane, France.
   Leibniz Inst Marine Sci, D-24105 Kiel, Germany.
C2 IFREMER, FRANCE
   LEIBNIZ INST MARINE SCI, GERMANY
   UBO, FRANCE
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.147
TC 47
UR https://archimer.ifremer.fr/doc/2008/publication-4554.pdf
LA English
DT Article
DE ;barotropic and baroclinic instability;tropical Atlantic;tropical instability waves
AB [1] The spatial and temporal distributions of tropical instability waves (TIWs) in the Atlantic Ocean are investigated using a combination of current observations with moored instruments deployed at the equator at 23 degrees W and a realistic eddy-resolving (1/12 degrees) general circulation model of the Atlantic Ocean. The meridional and vertical shears of the zonal current system contribute to the eddy production rates and thus to the generation of TIWs in the central tropical Atlantic Ocean. In the Southern Hemisphere, TIWs are forced only by baroclinic instability associated with the vertical shear of the central part of the South Equatorial Current (SEC). In the Northern Hemisphere, baroclinic instability due to the vertical shear of the northern SEC (nSEC) as well as barotropic instabilities due to horizontal shears of the Equatorial Undercurrent (EUC)/nSEC and nSEC/North Equatorial Countercurrent (NECC) contribute to the generation of the TIWs. Since seasonal changes of the instability production rates related to the EUC/nSEC are comparable low while the rates related to the nSEC/NECC are high, we suggest that the seasonality of the NECC dominates the seasonal modulation of the TIWs.
PY 2008
PD AUG
SO Journal of Geophysical Research ( JGR ) - Oceans
SN 0148-0227
PU American Geophysical Union
VL 113
IS C8
UT 000258647900001
DI 10.1029/2007JC004712
ID 4554
ER

EF