@article{fdi:010079803,
  title = {{O}bserved changes in flood hazard in {A}frica},
  author = {{T}ramblay, {Y}ves and {V}illarini, {G}. and {Z}hang, {W}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}loods represent a major natural hazard in {A}frica, causing over 27 000 fatalities during the period 1950-2019. {D}espite its relevance, little is known about changes in flood hazard across this continent due to the lack of long-term high-quality streamflow records. {H}ere we use a newly assembled discharge dataset of {A}frican rivers, and provide a long-term comprehensive view of flood hazard across this continent. {W}e show that the annual maximum peak discharge does not exhibit a monotonic pattern, but overall decreasing trends prior to 1980 and increasing trends afterwards, especially in western and southern {A}frica. {O}ur results indicate that these differing trends can be ascribed to changes in extreme precipitation around 1980. {M}oreover, these changes in intense precipitation pre/post 1980 are due to increased thunderstorm activity associated with enhanced convective available potential energy and zonal vertical shear driven by cooling temperature trends over western {A}frica. {T}he changes in flood hazard in southern {A}frica can be tied to changes in {N}amibia low-level jet. {T}herefore, the observed increase in flooding since 1980 suggests that it would be beneficial to improve the monitoring, modeling and communication of flood hazard to reduce the socio-economic impacts of these events.},
  keywords = {{F}loods ; {A}frica ; trends ; extreme precipitation ; {AFRIQUE}},
  booktitle = {},
  journal = {{E}nvironmental {R}esearch {L}etters},
  volume = {15},
  numero = {10},
  pages = {1040b5 [9 p.]},
  ISSN = {1748-9326},
  year = {2020},
  DOI = {10.1088/1748-9326/abb90b},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079803},
}