@article{fdi:010084400,
  title = {{R}ain, wind, and dust connections in the {S}ahel},
  author = {{B}ergametti, {G}. and {R}ajot, {J}ean-{L}ouis and {M}articorena, {B}. and {F}eron, {A}. and {G}aimoz, {C}. and {C}hatenet, {B}. and {C}oulibaly, {M}. and {K}one, {I}. and {M}aman, {A}. and {Z}akou, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {S}ahel is a dust source region where dust emission could be drastically modified in the future due to climatic and land use changes. {B}ased on observations of meteorological parameters and dust concentration for about 1,000 rain events, we investigated the processes leading to dust emission during the rainy season when {M}esoscale {C}onvective {S}ystems ({MCS}s) regularly cross the {S}ahel. {W}e show that the highest wind speed is strongly linked to the {MCS} cold pool intensity, which is characterized by a drop in surface temperature. {T}his is observed during the premonsoon period (similar to {M}ay to {J}une) when the midtroposphere is still sufficiently dry to allow intense evaporation of raindrops. {B}ecause this coincides with the time of the year that the surface is the least protected by the vegetative residue, the premonsoon wind speed leads to the highest observed dust concentration in our record. {M}ost of the highest wind speed occur before or just at the beginning of a rainy event allowing a large part of the dust raised to be transported ahead the rain limiting dust removal by wet scavenging. {F}inally, we show that the number of 5-min dust concentration higher than 5,000 mu g m(-3) is almost only occurring during the rainy season. {T}hese results suggest that until the dust models fail to correctly resolve {MCS}, it will be difficulty to obtain reliable estimates of dust emission from the {S}ahel for the present or future scenarios.},
  keywords = {dust ; {S}ahel ; wind ; rain ; mesoscale convective system ; {ZONE} {SAHELIENNE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {A}tmospheres},
  volume = {127},
  numero = {3},
  pages = {e2021{JD}035802 [22 ]},
  ISSN = {2169-897{X}},
  year = {2022},
  DOI = {10.1029/2021jd035802},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084400},
}