@article{fdi:010086928,
  title = {{C}larifying the role of {ENSO} on {E}aster {I}sland precipitation changes : potential environmental implications for the last millennium},
  author = {{D}elcroix, {T}hierry and {M}ichel, {S}. {L}. {L}. and {S}wingedouw, {D}. and {M}alaize, {B}. and {D}aniau, {A}. {L}. and {A}barca-del-{R}io, {R}. and {C}aley, {T}. and {S}{\'e}mah, {A}nne-{M}arie},
  editor = {},
  language = {{ENG}},
  abstract = {{E}l {N}ino {S}outhern {O}scillation ({ENSO}) events yield precipitation deficits and ensuing droughts, often damaging regional forests, in many parts of the world. {T}he relative roles of {ENSO}, other natural climate changes, and anthropogenic factors on the forest clearing of {E}aster {I}sland over the last millennium are still debated. {H}ere, we analyze {E}aster {I}sland precipitation changes using in situ, satellite-derived and reanalysis products spanning the last 4-7 decades, and 46 monthly 156-year-long (1850-2014) simulations derived from 25 {CMIP}5 and 21 {CMIP}6 ({C}oupled {M}odel {I}ntercomparison {P}roject phases 5 and 6) {G}eneral {C}irculation {M}odels. {O}ur analysis shows that {L}a {N}ina events, the cold phases of {ENSO}, cause precipitation deficits of -0.2 to -0.3 standard deviation (relative to long-term mean) in all analyzed data types. {ENSO}-like events are further examined over the last millennium (850-1981). {A} new multiproxy reconstruction of the {NINO}3.4 index based on proxy records from the {P}ast {G}lobal {C}hanges 2k database and {R}andom {F}orest method is produced. {O}ur reconstruction reveals unusual high recurrences of {L}a {N}ina-like situations during the fifteenth to seventeenth centuries, which likely induced significant precipitation deficits on the island. {T}hese situations are compared to published vegetation reconstructions based on pollen analyses derived from sedimentary cores collected in three island sites. {W}e conclude the environmental consequences of cumulative precipitation deficits over long-lasting {L}a {N}ina-like situations reconstructed here over the fifteenth to seventeenth centuries were likely favoring drought and forest flammability. {L}a {N}ina events should be better accounted for among the causes of forest clearing on {E}aster {I}sland.},
  keywords = {{PACIFIQUE} ; {PAQUES} {ILE}},
  booktitle = {},
  journal = {{P}aleoceanography and {P}aleoclimatology},
  volume = {37},
  numero = {12},
  pages = {e2022{PA}004514 [19 ]},
  ISSN = {2572-4517},
  year = {2022},
  DOI = {10.1029/2022pa004514},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086928},
}