@article{fdi:010075726,
  title = {{I}nterannual to {M}ulti-decadal streamflow variability in {W}est and {C}entral {A}frica : interactions with catchment properties and large-scale climate variability},
  author = {{S}idibe, {M}. and {D}ieppois, {B}. and {E}den, {J}. and {M}ah{\'e}, {G}il and {P}aturel, {J}ean-{E}mmanuel and {A}moussou, {E}. and {A}nifowose, {B}. and {L}awler, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}roughts and floods are responsible for similar to 80% of fatalities, and similar to 70% of economic losses related to natural hazards in {S}ub-{S}aharan {A}frica. {R}ainfall variability which is driven by interannual to multi-decadal climate fluctuations, here underpins these issues but is also crucial to agriculture and livelihoods. {H}owever, due to data scarcity, little is known about the impact of these climatic fluctuations and catchment properties on streamflow variability. {T}herefore, in this study, using a newly reconstructed streamflow dataset, we aim to extend understanding of hydrological variability through investigation of key large-scale controls which modulate climate-river flows relationships at the subcontinental scale. {M}odes of variability are extracted using continuous wavelet transform and maximum overlap discrete wavelet transform. {W}e first assess the relative importance of catchment properties in modulating streamflow and modes of variability, before examining teleconnections with climate variables from different datasets ({ERSST}.v5 and 20{CR}.v2). {T}he results underline the importance of interannual components of river flow along the {G}ulf of {G}uinea and the coastal regions of {C}entral {A}frica where annual rainfall amounts are higher, and runoff is mostly generated from surface and sub-surface processes. {I}n contrast, river flows along the {S}ahelian band show stronger multi-decadal components: this partly reflects the prominent role of geological formations in modulating high frequency rainfall signals. {T}hese modes of variability (also significantly detected in rainfall) are likely related to anomalies in sea-surface temperature ({SST}) anomaly patterns and associated atmospheric circulations, which together modulate the {W}est {A}frican monsoon. {C}larifying the picture of streamflow variability in western and {C}entral {A}frica thus opens up the prospect for improved future predictions for streamflow and water resources in data scarce environments.},
  keywords = {{S}treamflow ; {R}ainfall ; {S}pectral analysis ; {I}nterannual to multi-decadal variability ; {C}atchment properties ; {L}arge-scale climate teleconnections ; {AFRIQUE} {SUBSAHARIENNE}},
  booktitle = {},
  journal = {{G}lobal and {P}lanetary {C}hange},
  volume = {177},
  numero = {},
  pages = {141--156},
  ISSN = {0921-8181},
  year = {2019},
  DOI = {10.1016/j.gloplacha.2019.04.003},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075726},
}