@article{fdi:010090865,
  title = {{I}nvestigation of drought and flooding areas in coastal countries of {W}est {A}frica in the context of global warming},
  author = {{K}odja, {D}.{J}. and {Q}uenum, {G}.{M}.{L}.{D}. and {K}oubodana, {H}.{D}. and {A}moussou, {E}. and {A}koteyon, {I}.{S}. and {A}kognongb{\'e}, {A}.{S}.{J}. and {Y}{\^e}do, {M}.{F}.{A}. and {M}ah{\'e}, {G}il and {P}aturel, {J}ean-{E}mmanuel and {V}issin, {E}.{W}. and {H}ound{\'e}nou, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study investigated drought and flooding changes in {W}est {A}frica between 1983-2012 and projected near future (2025-2054) periods. {T}he datasets used are the {CHIRTS} and {CHIRPS}-2 for observed reanalysis and five (05) models of {ISIMIP}2b for {S}hared {S}ocio-economic {P}athways ({SSP}1.2-6 and {SSP}5-8.5). {E}xtremely and very wet days total precipitation ({R}95p{TOT}; {R}99p{TOT}) and {S}tandardized {P}recipitation {E}vapotranspiration {I}ndex ({SPEI}) were employed to investigate floods and drought spatial distribution using {S}en {S}lope trend analysis method. {T}he results showed that there is a variability in the spatial distribution of extreme indices with an upward and downward trend of dry and wet rainfall periods in {W}est {A}frica in both historical and projected periods. {T}his observation suggests that the study area is faced with rainfall variability marked by extreme events. {A} further examination on the spatial and temporal distribution of flood occurrence showed that more flood events were observed in the {G}ulf of {G}uinea and {S}avannah countries, followed by an increase in uniform spatial distribution and moderate wet days both under {SSP}1.2.6, and {SSP} 5.8.5. {I}n addition, result showed that an upward trend in wet periods can cause the occurrence of extreme events associated with floods in the context of global warming. {H}owever, with these scenarios negative changes are not excluded in the {E}ast, the {S}ahel and some western part of the {G}ulf of {G}uinea in the study area for the {SSP}5.8.5 scenario. {T}hus, the results revealed that the spatio- temporal variability of extreme rainfall can have repercussions on the hydrological functioning of watersheds, water availability and water-dependent activities.},
  keywords = {{INONDATION} ; {SECHERESSE} ; {PRECIPITATION} ; {EVAPOTRANSPIRATION} ; {METHODOLOGIE} ; {PLUIE} ; {SAVANE} ; {BASSIN} {VERSANT} ; {CRUE} ; {CHANGEMENT} {CLIMATIQUE} ; 1983 2012 ; 2025 2054 ; {AFRIQUE} {DE} {L}'{OUEST} ; {SAHEL} ; {GOLFE} {DE} {GUINEE}},
  booktitle = {{IAHS}2022 - {H}ydrological sciences in the {A}nthropocene},
  journal = {{P}roceedings of {IAHS}},
  volume = {385},
  numero = {},
  pages = {359--364},
  ISSN = {2199-899{X}},
  year = {2024},
  DOI = {10.5194/piahs-385-359-2024},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090865},
}