@incollection{fdi:010075882,
  title = {{P}recipitation extremes in the {W}est {A}frican {S}ahel : recent evolution and physical mechanisms},
  author = {{V}ischel, {T}. and {P}anthou, {G}. and {P}eyrill{\'e}, {P}. and {R}oehrig, {R}. and {Q}uantin, {G}uillaume and {L}ebel, {T}hierry and {W}ilcox, {C}atherine and {B}eucher, {F}. and {B}udiarti, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {W}est {A}frican {M}onsoon ({WAM}) has undergone drastic changes in the recent past causing dramatic impacts on populations. {A}fter 30 years of devastating drought, the last two decades experienced a growing number of damaging floods concurrent with ongoing episodes of water shortages and famines. {T}his raised the issue of a more extreme climate in the {S}ahel with more intense rainfall and dry spells. {T}his chapter gives an overview of progress on documenting the rainfall extremes in the {S}ahel, a subject that has long been ignored in the literature. {I}t focuses on statistical characteristics of extremes, on their trends in the context of {WAM} decadal variability and on the physical mechanisms involved in their occurrence. {B}ased on recent literature and original analyses of daily rain gauge records in the central {S}ahel, a significant intensification of the {S}ahelian rainfall regime is confirmed over the last 15 years: more extreme events, larger size storms, accompanied by a deficit in the occurrence of less intense events. {F}rom a composite of 20 extreme storms in {O}uagadougou, some key atmospheric conditions are shown to drive extreme precipitation, including an intense southerly monsoon flux coincident with strong {A}frican easterly waves and a large-scale moist anomaly at the regional scale.},
  keywords = {{PRECIPITATION} ; {EVOLUTION} ; {REGIME} {HYDROLOGIQUE} ; {VARIATION} {ANNUELLE} ; {PLUVIOMETRIE} ; {METHODOLOGIE} ; {MOUSSON} ; {CYCLE} {SAISONNIER} ; {EVENEMENT} {EXTREME} ; {ZONE} {SAHELIENNE} ; {AFRIQUE} {DE} {L}'{OUEST} ; {BURKINA} {FASO} ; {OUAGADOUGOU}},
  booktitle = {{T}ropical extremes : natural variability and trends},
  numero = {},
  pages = {95--138},
  address = {{A}msterdam},
  publisher = {{E}lsevier},
  series = {},
  year = {2019},
  DOI = {10.1016/{B}978-0-12-809248-4.00004-2},
  ISBN = {978-0-12-809248-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075882},
}