@incollection{fdi:010082931,
  title = {{S}ensitivity of {S}outh {A}merican tropical climate to last glacial maximum boundary conditions : focus on teleconnections with tropics and extratropics},
  author = {{K}hodri, {M}yriam and {K}ageyama, {M}. and {R}oche, {D}.{M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e explore how the moist deep convection over the {A}mazonian region responds to glacial forcings compared to the pre-indrustrial climate and how this change might interact with the meridional shift of rainfall over {N}ordeste, {P}acific and {A}tlantic tropical {O}ceans. {T}he objective is to assess and investigate the individual contributions of greenhouse gases concentration, ice sheet topography and/or albedo on the hydrological changes over tropical {S}outh {A}merica and their links to the {H}adley and {W}alker circulations.{W}e employ coupled ocean-atmosphere simulations for the {L}ast {G}lacial {M}aximum and sensitivity experiments for each {L}ast {G}lacial {M}aximum forcing. {W}e show that the {L}ast {G}lacial {M}aximum reduced greenhouse gases alone can explain the observed rainfall changes over tropical {S}outh {A}merica through the induced increase in tropical and northern extra-tropical dry static stability and altered {H}adley circulation. {F}urthermore, we show that the topography of the {N}orth {A}merican ice sheet reinforces the equatorward shift of the descending branch of the {H}adley cell leading to stronger subsidence and drying over the northern tropics. {H}owever, we show that the {L}aurentide ice sheet has also a significant influence on the simulated enhanced rainfall over {N}ordeste and {S}outheastern {B}razil via the eastward shift of the {W}alker circulation, with a mechanism analogous to the atmospheric thermodynamical response to {E}l-{N}iño conditions.},
  keywords = {{BRESIL} ; {BOLIVIE} ; {ATLANTIQUE} ; {PACIFIQUE} ; {ZONE} {TROPICALE} ; {AMERIQUE} {DU} {SUD} ; {AMAZONE} {BASSIN}},
  booktitle = {{P}ast climate variability in {S}outh {A}merica and surrounding regions : from the last glacial maximum to the {H}olocene},
  numero = {14},
  pages = {213--238},
  address = {[{D}ordrecht]},
  publisher = {{S}pringer},
  series = {{D}evelopments in {P}aleoenvironmental {R}esearch},
  year = {2009},
  DOI = {10.1007/978-90-481-2672-9_9},
  ISBN = {978-90-481-2671-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082931},
}