@article{fdi:010090502,
  title = {{R}egionalization of the onset and offset of the rainy season in {S}enegal using {K}ohonen self-organizing maps},
  author = {{F}aye, {D}. and {K}aly, {F}. and {D}ieng, {A}. {L}. and {W}ane, {D}. and {F}all, {C}. {M}. {N}. and {M}ignot, {J}uliette and {G}aye, {A}. {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study explores the spatiotemporal variability of the onset, end, and duration of the rainy season in {S}enegal. {T}hese phenological parameters, crucial for agricultural planning in {W}est {A}frica, exhibit high interannual and spatial variability linked to precipitation. {T}he objective is to detect and spatially classify these indices across {S}enegal using different approaches. {D}aily precipitation data and {ERA}5 reanalyses from 1981 to 2018 were utilized. {T}he employed method enables the detection of key dates. {S}ubsequently, the {K}ohonen algorithm spatially classifies these indices on topological maps. {T}he results indicate a meridional gradient of the onset, progressively later from the southeast to the northwest, whereas the end follows a north-south gradient. {T}he duration varies from 45 days in the north to 150 days in the south. {T}he use of self-organizing maps allows for classifying the onset, end, and duration of the season into four zones for the onset and end, and three zones for the duration of the season. {T}hey highlight the interannual irregularity of transitions, with both early and late years. {T}he dynamic analysis underscores the complex influence of atmospheric circulation fields, notably emphasizing the importance of low-level monsoon flux. {T}hese findings have tangible implications for improving seasonal forecasts and agricultural activity planning in {S}enegal. {T}hey provide information on the onset, end, and duration classes for each specific zone, which can be valuable for planning crops adapted to each region.},
  keywords = {regionalization ; onset ; offset ; self-organizing maps ; rainy season ; {S}enegal ; {SENEGAL}},
  booktitle = {},
  journal = {{A}tmosphere},
  volume = {15},
  numero = {3},
  pages = {378 [22 ]},
  year = {2024},
  DOI = {10.3390/atmos15030378},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090502},
}