@article{fdi:010064106,
  title = {{I}nterannual variability of isotopic composition in water vapor over western {A}frica and its relationship to {ENSO}},
  author = {{O}kazaki, {A}. and {S}atoh, {Y}. and {T}remoy, {G}. and {V}imeux, {F}ran{\c{c}}oise and {S}cheepmaker, {R}. and {Y}oshimura, {K}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study was performed to examine the relationship between isotopic composition in near-surface vapor (delta {O}-18(v)) over western {A}frica during the monsoon season and {E}l {N}ino-{S}outhern {O}scillation ({ENSO}) activity using the {I}sotope-incorporated {G}lobal {S}pectral {M}odel. {T}he model was evaluated using a satellite and in situ observations at daily to interannual timescales. {T}he model provided an accurate simulation of the spatial pattern and seasonal and interannual variations of isotopic composition in column and surface vapor and precipitation over western {A}frica. {E}ncouraged by this result, we conducted a simulation stretching 34 years (1979-2012) to investigate the relationship between atmospheric environment and isotopic signature on an interannual timescale. {T}he simulation indicated that the depletion in the monsoon season does not appear every year at {N}iamey. {T}he major difference between the composite fields with and without depletion was in the amount of precipitation in the upstream area of {N}iamey. {A}s the interannual variation of the precipitation amount is influenced by the {ENSO}, we regressed the monsoon season averaged delta {O}-18(v) from the model and annually averaged {NINO}3 index and found a statistically significant correlation ({R} = 0.56, {P} < 0.01) at {N}iamey. {T}his relationship suggests that there is a possibility of reconstructing past western {A}frican monsoon activity and {ENSO} using climate proxies.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {NIGER} ; {NIAMEY}},
  booktitle = {},
  journal = {{A}tmospheric {C}hemistry and {P}hysics},
  volume = {15},
  numero = {6},
  pages = {3193--3204},
  ISSN = {1680-7316},
  year = {2015},
  DOI = {10.5194/acp-15-3193-2015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064106},
}