@article{fdi:010062651,
  title = {{M}apping the physico-chemical properties of mineral dust in western {A}frica : mineralogical composition},
  author = {{F}ormenti, {P}. and {C}aquineau, {S}andrine and {D}esboeufs, {K}. and {K}laver, {A}. and {C}hevaillier, {S}. and {J}ournet, {E}. and {R}ajot, {J}ean-{L}ouis},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the last few years, several ground-based and airborne field campaigns have allowed the exploration of the properties and impacts of mineral dust in western {A}frica, one of the major emission and transport areas worldwide. {I}n this paper, we explore the synthesis of these observations to provide a large-scale quantitative view of the mineralogical composition and its variability according to source region and time after transport. {T}his work reveals that mineral dust in western {A}frica is a mixture of clays, quartz, iron and titanium oxides, representing at least 92% of the dust mass. {C}alcite ranged between 0.3 and 8.4% of the dust mass, depending on the origin. {O}ur data do not show a systematic dependence of the dust mineralogical composition on origin; this is to be the case as, in most of the instances, the data represent the composition of the atmospheric burden after 1-2 days after emission, when air masses mix and give rise to a more uniform dust load. {T}his has implications for the representation of the mineral dust composition in regional and global circulation models and in satellite retrievals. {I}ron oxides account for 58 +/- 7% of the mass of elemental {F}e and for between 2 and 5% of the dust mass. {M}ost of them are composed of goethite, representing between 52 and 78% of the iron oxide mass. {W}e estimate that titanium oxides account for 1-2% of the dust mass, depending on whether the dust is of {S}aharan or {S}ahelian origin. {T}he mineralogical composition is a critical parameter for estimating the radiative and biogeochemical impact of mineral dust. {T}he results regarding dust composition have been used to estimate the optical properties as well as the iron fractional solubility of {S}aharan and {S}ahelian dust. {D}ata presented in this paper are provided in numerical form upon email request while they are being turned into a public database, the {D}ust-{M}apped {A}rchived {P}roperties ({DUST}-{MAP}), which is an open repository for compositional data from other source regions in {A}frica and worldwide.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST}},
  booktitle = {},
  journal = {{A}tmospheric {C}hemistry and {P}hysics},
  volume = {14},
  numero = {19},
  pages = {10663--10686},
  ISSN = {1680-7316},
  year = {2014},
  DOI = {10.5194/acp-14-10663-2014},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062651},
}