@article{fdi:010052945,
  title = {{L}ocal and remote impacts of a tropical {A}tlantic salinity anomaly},
  author = {{M}ignot, {J}uliette and {F}rankignoul, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he climatic impacts of an enhanced evaporation prescribed during 50 years in the tropical {A}tlantic are investigated in a coupled ocean-atmosphere general circulation model. {L}ocally, the salinity increase leads to a rapid deepening and cooling of the surface mixed layer. {T}his induces a deepening of the equatorial undercurrent and an intensification of the south equatorial current. {A} remote atmospheric response to the tropical {A}tlantic perturbation is detected in the {N}orth {A}tlantic sector after ten years. {I}t has the form of a robust wave-like tropospheric perturbation seemingly excited by the weakening of atmospheric deep convection over the {A}mazonian basin. {M}eanwhile, the salt anomaly is carried northward by the mean oceanic circulation. {I}t is traced up to the convection sites and then on its return path at depth towards lower latitudes. {C}onsistent with the density increase, deep convection is enhanced after the arrival of the salt anomaly and the {A}tlantic meridional overturning circulation ({AMOC}) intensifies about 20 years after the beginning of the perturbation. {T}he adjustment of the tropical {A}tlantic to the {AMOC} intensification then modifies its initial response to the freshwater forcing, leading to a weaker cooling in the northern tropical {A}tlantic than in the southern tropical {A}tlantic, a slight northward shift of the tropical {A}tlantic precipitation pattern and an intensification of the {N}orth {B}razil current. {O}n the other hand, no significant anomalous precipitations are found in the {P}acific. {T}he initial remote atmospheric response is also modulated, by an {NAO}-like response to the {AMOC} intensification.},
  keywords = {},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {35},
  numero = {7-8},
  pages = {1133--1147},
  ISSN = {0930-7575},
  year = {2010},
  DOI = {10.1007/s00382-009-0621-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052945},
}