@inproceedings{fdi:010078258,
  title = {{M}ixed layer heat/salt budget and {E}quatorial {U}nder-{C}urrent dynamics in the tropical {A}tlantic from a joint model-observations approach [r{\'e}sum{\'e} de poster]},
  author = {{K}om, {O}. and {A}lory, {G}. and {D}a-{A}llada, {C}. and {J}ouanno, {J}ulien},
  editor = {},
  language = {{ENG}},
  abstract = {{C}limatological mixed layer heat/salt budget terms derived from a {NEMO} 1/4° forced model simulation and from a {PREFACE} observation-based product are compared in the eastern tropical {A}tlantic. {M}ean spatial patterns of mixed layer depth, {SST} and {SSS} are in good agreement despite some local biases. {F}or the annual mean heat balance, atmospheric fluxes are quite different along the coasts, while horizontal advection mostly differs around the equator, maybe due to the low resolution of the observations (2.5°) that cannot resolve small meridional scales. {T}he seasonal heat balance is compared in boxes off {A}ngola, in the northeast {G}ulf of {G}uinea and in the {A}tlantic cold tongue. {S}easonal variations of heat fluxes are correlated except in the last box, while advection is everywhere poorly correlated. {F}or the annual mean salt balance, model and observations show similar freshwater fluxes, with larger spatial contrasts in the model, while advection mostly differs around the {ITCZ}. {I}n the {B}enguela region, model and observations roughly agree on freshwater fluxes and advection seasonal variations. {O}ff {A}ngola, {SSS} variations are uncorrelated. {T}he observed product does not explicitly resolve vertical diffusion, an important process for the heat/salt balance in the {G}ulf of {G}uinea. {T}he seasonal characteristics of the simulated {EUC} transport are compared to observations based on cruises and moorings at 23°{W}. {I}n the model, the {EUC} transport is slightly larger than observed on average, while its seasonal cycle is of comparable amplitude and shows a maximum around {S}eptember and minimum in {N}ovember, leading the observations by one month. {T}he maximum velocity is also biased high but seasonal cycles are consistent and roughly phased with the transport seasonal cycle. {T}he {EUC} core in the model is shallower than observed but with a similar seasonal cycle and coinciding maxima in depth and transport. {I}ts latitudinal position is more south of the equator, with a seasonal cycle opposite in phase and larger than observed. {A} test simulation with interannual wind forcing but climatological fluxes forcing is compared to the reference simulation to identify the respective role of dynamic and thermodynamic forcing on the {EUC} characteristics, in particular its salinity maximum.},
  keywords = {{AFRIQUE} {SUBSAHARIENNE} ; {ANGOLA} ; {GOLFE} {DE} {GUINEE} ; {ATLANTIQUE}},
  numero = {},
  pages = {70},
  booktitle = {{I}nternational conference {ICAWA} 2017 and 2018 : extended book of abstract : the {AWA} project : ecosystem approach to the management of fisheries and the marine environment in {W}est {A}frican waters},
  year = {2019},
  ISBN = {978-9553602-0-06},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078258},
}