@inproceedings{fdi:010078262,
  title = {{L}arge scale mechanisms associated with heat wave occurrences in {S}enegal [r{\'e}sum{\'e} de poster]},
  author = {{S}ambou, {M}.{J}.{G}. and {J}anicot, {S}erge and {B}adiane, {D}. and {G}aye, {A}.{T}. and {D}ieng, {A}.{L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he coastal location of the {S}enegal induces specific heat wave ({HW}) events. {HW}s are defined as daily temperature (daily maximum or minimum temperature, or mean apparent temperature) higher than the 95th moving percentile during at least three consecutive days over the boreal spring period ({M}ars-{A}pril-{M}ay, 1979-2014). {A} hierarchical classification enables to define three homogeneous regions in terms of {HW} occurrences over {S}enegal ({Z}one #1, $2 and #3, from {W}est to {E}ast). {I}n order to study how atmospheric circulation is linked to these {HW} occurrences, composites of anomaly fields of {ERA}-{I}nterim reanalysis have been computed using as reference date the starting day of each {HW} detected in {GSOD} ({G}lobal {S}ummary of the {D}ay) observations database. {R}esults show that two patterns control the occurrence of {HW}s: regional-scale positive pressure anomalies centred around 35°{N}-10°{W}, and more local negative anomalies around 20°{N}-15°{W}. {T}his structure leads to enhanced north-easterly winds advecting higher temperatures and moister air over the three zones of {S}enegal, and lower temperatures and drier air over the central {S}ahel. {T}he intensity of this relationship is the largest for {Z}one $1, intermediate for #2 and the weakest for $3. {T}he increased moisture signal over {S}enegal is highest for the composites associated with minimum and apparent temperature. {I}ndices linked to this structure can be used to evaluate the predictability of such {HW} events.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {SENEGAL} ; {SAHEL} ; {ATLANTIQUE}},
  numero = {},
  pages = {96},
  booktitle = {{I}nternational conference {ICAWA} 2017 and 2018 : extended book of abstract : the {AWA} project : ecosystem approach to the management of fisheries and the marine environment in {W}est {A}frican waters},
  year = {2019},
  ISBN = {978-9553602-0-06},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078262},
}