@article{fdi:010071974, title = {{D}ust induced changes on the {W}est {A}frican summer monsoon features}, author = {{N}'{D}atchoh, {E}. {T}. and {D}iallo, {I}. and {K}onare, {A}. and {S}ilue, {S}. and {O}gunjobi, {K}. {O}. and {D}iedhiou, {A}rona and {D}oumbia, {M}.}, editor = {}, language = {{ENG}}, abstract = {{D}ust generation and transportation from {N}orth {A}frica are thought to modulate the {W}est {A}frican {M}onsoon ({WAM}) features. {I}n this study, we investigated the relationship between the {S}aharan {A}ir {L}ayer located above {A}tlantic {O}cean ({OSAL}) and {WAM} features, including {M}onsoon flow, {A}frican {E}asterly {J}et ({AEJ}) and {T}ropical {E}asterly {J}et ({TEJ}) over {W}est {A}frica using the {R}eg{CM}4 regional model at 30 km grid resolution. {T}wo sets of experiments with and without dust load were performed between 2007 and 2013 over the simulation domain, encompassing the whole of {W}est {A}frica and a large part of the adjacent {A}tlantic {O}cean. {A}n intercomparison of the two simulations shows that dust load into the atmosphere greatly influences both the wind and temperature structure at different levels, resulting in the observed changes in the main features of the {WAM} system during summer. {T}hese changes lead to a westward shift with a slight strengthening of {AEJ} core over tropical {A}tlantic and weakening of both {TEJ} and monsoon flux penetration over land. {I}n addition, despite running the {R}eg{CM}4 with prescribed sea surface temperature, a correlation has been found between {A}erosol {O}ptical {D}epths in {OSAL} and {WAM} dynamics suggesting a mechanistic link between dust and {WAM} well reproduced by {R}eg{CM}4.}, keywords = {{W}est {A}frican monsoon ; {R}eg{CM}4 ; dust ; impacts ; {AFRIQUE} {DE} {L}'{OUEST}}, booktitle = {}, journal = {{I}nternational {J}ournal of {C}limatology}, volume = {38}, numero = {1}, pages = {452--466}, ISSN = {0899-8418}, year = {2018}, DOI = {10.1002/joc.5187}, URL = {https://www.documentation.ird.fr/hor/fdi:010071974}, }