@article{fdi:010087757,
  title = {{M}odulations in the {I}ndian {S}ummer {M}onsoon-{ENSO} teleconnections by the {N}orth {T}ropical {A}tlantic},
  author = {{S}ooraj, {K}. {P}. and {A}swale, {A}. {M}. and {S}wapna, {P}. and {T}erray, {P}ascal and {S}andeep, {N}. {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{N}orth {T}ropical {A}tlantic {S}ea {S}urface {T}emperature (i.e., {NTA} {SST}) anomalies emerge as a key-driver of the whole {E}l {N}ino {S}outhern {O}scillation-{I}ndian {S}ummer {M}onsoon ({ENSO}-{ISM}) system. {H}owever, as the underlying physical mechanisms are not yet well understood, this study made an attempt to have deeper insights on the role of the {NTA} {SST} variability on the {ISM}, {ENSO} and their mutual relationships. {T}he evidences from observations and a {P}i-{C}ontrol coupled simulation demonstrate the pronounced biennial nature of the {NTA}-{ENSO}-{ISM} system and suggest the precursory role of the {NTA} {SST}s in this biennial {ENSO}-{ISM} system. {A}s the cause-and-effect relationships are difficult to disentangle, ensembles of short coupled sensitivity experiments are conducted by imposing observed warm (cold) {SST} anomalies over {NTA}. {T}hese 1-year simulations start from various {J}anuary initial conditions corresponding to strong {E}l {N}ino ({L}a {N}ina) events as identified from {P}i-{C}ontrol and subsequently impose warm (cold) {SST} anomalies over the {NTA} region after the {E}l {N}ino ({L}a {N}ina) peak in {J}anuary. {T}he sensitivity experiments support the hypothesis of a key role of {NTA} {SST}s in the reversal of the {ENSO} conditions through their capacitor effect. {T}hey further illustrate the nonlinear characteristics of this system as cold {NTA} {SST} perturbations are more influential than warm {NTA} {SST}s. {T}his non-linearity brings up new perspectives on the {NTA}-{ENSO}-{ISM} system, as it is further reflected in the asymmetric response in the simulated {ENSO}-{ISM}, with the cold {NTA} perturbations initiated from the {L}a {N}ina conditions showing a stronger anomalous {ISM} response during boreal summer, which is in contrast with the feeble {ISM} response in the warm {NTA} perturbations experiment using the {E}l {N}ino initial conditions. {T}his non-linearity of {NTA}-{ENSO}-{ISM} has larger implications in a global warming scenario, as the climate variability over {NTA} region is projected to intensify in the future.},
  keywords = {{ISM} response ; {ENSO} ; {NTA} {SST} ; {NTA}-{ENSO}-{ISM} association ; {A}symmetric ; {ENSO}-{ISM} response ; {C}oupled model simulations ; {INDE} ; {PACIFIQUE}, {ATLANTIQUE}, {OCEAN} {INDIEN} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[20 p.]},
  ISSN = {0930-7575},
  year = {2023},
  DOI = {10.1007/s00382-023-06817-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087757},
}