@article{PAR00003106, title = {{R}egional variability of the composition of mineral dust from western {A}frica : results from the {AMMA} {SOP}0/{DABEX} and {DODO} field campaigns - art. no. {D}00{C}13}, author = {{F}ormenti, {P}. and {R}ajot, {J}ean-{L}ouis and {D}esboeufs, {K}. and {C}aquineau, {S}andrine and {C}hevaillier, {S}. and {N}ava, {S}. and {G}audichet, {A}. and {J}ournet, {E}. and {T}riquet, {S}. and {A}lfaro, {S}. and {C}hiari, {M}. and {H}aywood, {J}. and {C}oe, {H}. and {H}ighwood, {E}.}, editor = {}, language = {{ENG}}, abstract = {{T}his paper presents data on elemental and mineralogical composition of mineral dust from various source regions of {A}frica collected during the {A}frican {M}onsoon {M}ultidisciplinary {A}nalyses ({AMMA}) {SOP}0/{DABEX} and {D}ust {O}uflow and {D}eposition to the {O}cean ({DODO}) {DODO}1 experiments ({J}anuary-{F}ebruary 2006), and the {DODO}2 campaign ({A}ugust 2006). {B}ulk filter samples were collected at the {AMMA} supersite of {B}anizoumbou, {N}iger, as well as on board the {F}acility for {A}irborne {A}tmospheric {M}easurements ({FAAM}) {BA}e-146 aircraft. {B}oth mineral dust and biomass burning in external mixing occurred in surface and elevated layers during the winter field phase of the campaign. {H}owever, mineral dust was overwhelming, accounting for 72% of the estimated aerosol mass in aged elevated biomass burning layers and up to 93% in plumes of mineral dust, which generally occurred in the boundary layer. {A} number of well-defined episodes of advection of mineral dust could be identified both at the ground and on the aircraft. {T}he elemental and mineralogical composition varied depending on source region. {T}his variability could be well traced by the calcium content, which is enhanced in dust from {N}orth {A}frica but depleted in dust from the {S}ahel. {I}ron oxides in the form of hematite and goethite are enriched in dust emitted within {S}ahel and in {M}auritania, whereas dust from the {B}odele depression is iron-oxide depleted. {I}ron oxides represented between 2.4% and 4.5% of the total estimated dust oxide mass. {T}his regional variability will have to be taken into account in estimating the optical properties of absorption of mineral dust from western {A}frica.}, keywords = {}, booktitle = {}, journal = {{J}ournal of {G}eophysical {R}esearch - {A}tmospheres}, volume = {113}, numero = {{D}20}, pages = {}, ISSN = {0148-0227}, year = {2008}, DOI = {10.1029/2008jd009903}, URL = {https://www.documentation.ird.fr/hor/{PAR}00003106}, }