@article{fdi:010035765, title = {{I}nfluence of observed and {RCM}-simulated precipitation on the water discharge over the {S}irba basin, {B}urkina {F}aso/{N}iger}, author = {{M}essager, {C}. and {G}all{\'e}e, {H}. and {B}rasseur, {O}. and {C}appelaere, {B}ernard and {P}eugeot, {C}hristophe and {S}{\'e}guis, {L}uc and {V}auclin, {M}ichel and {R}amel, {R}. and {G}rasseau, {G}. and {L}{\'e}ger, {L}. and {G}irou, {D}.}, editor = {}, language = {{ENG}}, abstract = {{T}he forcing of a hydrologic model. ({ABC}) by both observed and simulated precipitation from a regional climate model ({MAR}) has been performed over the {S}irba watershed (39,000 kin 2) located in the {S}ahelian region. {T}wo aspects have been more specifically examined: the spatial and temporal representations of precipitation. {T}he comparison between simulated and observed discharges-using observed rainfall datasets as forcing of the hydrologic model-has shown that the representation of daily precipitation (which is mainly convective in the {S}alielian region) was not sufficiently accurate to correctly simulate the hydrologic response of the watershed. {S}ince this response drives the soil water budget and consequently the amount of evaporation in forthcoming coupling experiments, it is thus necessary to develop more realistic infra-daily precipitation associated with convective events. {A} new temporal disaggregation scheme has been then developed. {C}onsidering observed as well as simulated precipitation fields, this method has significantly improved the simulated discharge at the catchment outlet. {T}he major role played by the temporal component compared to spatial component of the precipitation has been then underlined. {I}n addition, the present study shows the unsuitability of the simulated precipitation from the {RCM} to directly force a hydrologic model at infra daily timescale even if the cumulative amount and the main features of the precipitation seasonal cycle are well simulated.}, keywords = {}, booktitle = {}, journal = {{C}limate {D}ynamics}, volume = {27}, numero = {2-3}, pages = {199--214}, ISSN = {0930-7575}, year = {2006}, DOI = {10.1007/s00382-006-0131-y}, URL = {https://www.documentation.ird.fr/hor/fdi:010035765}, }