FN Archimer Export Format
PT J
TI Sensitivity of near-surface Tropical Instability Waves to submonthly wind forcing in the tropical Atlantic
BT 
AF ATHIE, Gabriela
   MARIN, Frederic
   TREGUIER, Anne-Marie
   BOURLES, Bernard
   GUIAVARC'H, Catherine
AS 1:1,2;2:1,3;3:4;4:1,5;5:4;
FF 1:;2:PDG-DRO-UMLPO;3:;4:;5:;
C1 Univ Toulouse, UPS OMP PCA, LEGOS, F-31400 Toulouse, France.
   IRD, LEGOS, F-29280 Plouzane, France.
   IRD, LEGOS, F-31400 Toulouse, France.
   UBO, IRD, IFREMER, CNRS,Lab Phys Oceans, F-29280 Plouzane, France.
   IRD, LEGOS, Cotonou, Benin.
C2 UNIV TOULOUSE, FRANCE
   IRD, FRANCE
   LEGOS, FRANCE
   UBO, FRANCE
   IRD, BENIN
   IFREMER, FRANCE
SI BREST
SE PDG-DRO-UMLPO
   PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.236
TC 15
TU Centre national d'études spatiales
   Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut national de la recherche agronomique
   Université de Toulouse III - Paul Sabatier
   École nationale de météorologie de Toulouse
UR https://archimer.ifremer.fr/doc/00000/11117/7967.pdf
LA English
DT Article
CR PIRATA-FR06
   PIRATA-FR08
   PIRATA-FR09
   PIRATA-FR10
   PIRATA-FR11
   PIRATA-FR11BIS
   PIRATA-FR12
BO Le Suroît
   L'Atalante
DE ;Equatorial Atlantic;Intra seasonal variability;Tropical instabilities;Ocean mixed layer;Sensitivity numerical experiments
AB This study demonstrates the sensitivity of the near-surface properties in the tropical Atlantic Ocean to the high-frequency of the winds in numerical simulations. At intra-seasonal timescales (2-50 days), two distinct period ranges dominate the variability in the upper ocean: periods between 2 and 20 days, which are essentially wind-forced and periods between 20 and 50 days, due mostly to Tropical Instability Waves (TIWs). Using a numerical model forced by different wind fields, it is shown that the characteristics of the intra-seasonal variability in the ocean surface mixed-layer are strongly dependent on the wind forcing. Submonthly winds are shown to force large variability in the upper ocean that can strikingly decrease the amplitude of the TIWs in the mixed-layer and their imprint on the horizontal distribution of sea surface temperatures. Wind products containing too much energy at submonthly periods thus prevent wind-forced simulations from reproducing a realistic surface signature of TIWs, when compared to satellite observations of sea surface temperature. In addition, submonthly wind variability may be responsible for part of the observed interannual variability of the TIW signature in the temperature. The impact of submonthly winds is strongest in the mixed-layer: beneath the mixed-layer, all simulations show similar characteristics of the TIWs. (C) 2009 Elsevier Ltd. All rights reserved.
PY 2009
SO Ocean Modelling
SN 1463-5003
PU Elsevier Sci Ltd
VL 30
IS 4
UT 000271484100001
BP 241
EP 255
DI 10.1016/j.ocemod.2009.06.016
ID 11117
ER

EF