FN Archimer Export Format
PT J
TI Response of the Southern Benguela upwelling system to fine-scale modifications of the coastal wind
BT 
AF DESBIOLLES, Fabien
   BLANKE, Bruno
   BENTAMY, Abderrahim
   ROY, C.
AS 1:1,2;2:1;3:2;4:1;
FF 1:;2:;3:PDG-ODE-LOPS-SIAM;4:;
C1 UMR 6523 CNRS Ifremer IRD UBO, LPO, Brest, France.
   IFREMER, Ctr Brest, LOS, Brest, France.
C2 CNRS, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 2.439
TC 17
UR https://archimer.ifremer.fr/doc/00302/41339/40525.pdf
LA English
DT Article
DE ;Eastern boundary upwelling system;Momentum flux forcing;Wind profile;Numerical modeling;Scatterometry
AB We analyze the results of a regional model of the Southern Benguela upwelling system forced by wind stress fields derived from QuikSCAT observations. Two different horizontal resolutions are considered for the wind stress: QS25 and QS50, corresponding to native 25 and 50 km grids, respectively. The differences between both products highlight the primary importance of fine-scale momentum fluxes for both the structure and intensity of the wind- and wind curl-driven upwelling. Using QS25, we show that the coastal Ekman transport is reduced, leading to a warmer SST and a reduced oceanic coastal jet. QS25 finer wind stress curl patterns also favor the development of a stronger and shallower poleward undercurrent. The addition of a coastal wind correction to QS25 lets us investigate the possible implications of an imbalance between Ekman transport and Ekman pumping: a wind reduction in the coastal band often reduces the SST cooling, but the two mechanisms compensate each other when the characteristic length scales of the coastal upwelling and the orography-induced wind drop-off are similar.
PY 2016
PD APR
SO Journal Of Marine Systems
SN 0924-7963
PU Elsevier Science Bv
VL 156
UT 000370888600004
BP 46
EP 55
DI 10.1016/j.jmarsys.2015.12.002
ID 41339
ER

EF