@inproceedings{fdi:010072132,
  title = {{LMD}z simulation of transport and deposition of mineral dust over the {N}orth {E}astern {T}ropical {A}tlantic [r{\'e}sum{\'e}]},
  author = {{S}enghor, {H} and {M}achu, {E}ric and {H}ourdin, {F}. and {G}randpeix, {J}.{Y}. and {E}scribano, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}aharan dust represents more than 50% of total desertic aerosols emitted around the globe. {T}he advection of desertic aerosols by air mass flux from {W}est {A}frica to the {A}tlantic enriches the surface of the ocean in nutrients through atmospheric deposition. {I}t has been shown that dust deposition is seasonal and in opposite phase between the eastern and the western {T}ropical {A}tlantic. {T}his seasonality is driven by processes distributing the aerosol through the atmosphere over the continent and by other processes involved in the atmosphere-land-sea interactions. {W}e used the {LMD} {G}eneral {C}irculation {M}odel in a {W}est {A}frica regional configuration to investigate the processes at work in the fate of dusts. {W}e quantify the atmospheric dust dry and wet deposition respectively in winter and boreal summer for the year 2006. {I}n these estimates, we use simulations with aerosols scavenged by convection or convective features and large-scale precipitations. {I}n the region between 35°{W}-18°{W} (longitude) and 0°{N}-25°{N} (latitude), we find that 2694 µg.m-2.mth-1 are deposited by dry process and 157 µg.m-2.mth-1 are washout in the atmosphere, representing respectively 95% and 5% of the total dust deposition in {J}anuary. {I}n {J}uly, the wet deposition increases up to 58% (1719 µg.m-2.mth-1) while dry deposition reaches only 42% (1261 µg.m-2.mth-1). {T}hese deposition are related to the physical processes dominated by the sedimentation near the emissions sources, the turbulence in the marine boundary layer in winter and the large-scale rainout in summer over the {A}tlantic {O}cean.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {ATLANTIQUE}},
  numero = {},
  pages = {89},
  booktitle = {{I}nternational conference {ICAWA} 2016 : 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 = {2017},
  ISBN = {978-2-9553602-0-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072132},
}