@article{fdi:010083078,
  title = {{A}n intercomparison of simulated rainfall and evapotranspiration associated with a mesoscale convective system over {W}est {A}frica},
  author = {{G}uichard, {F}. and {A}sencio, {N}. and {P}eugeot, {C}hristophe and {B}ock, {O}. and {R}edelsperger, {J}. {L}. and {C}ui, {X}. {F}. and {G}arvert, {M}. and {L}amptey, {B}. and {O}rlandi, {E}. and {S}ander, {J}. and {F}ierli, {F}. and {G}aertner, {M}. {A}. and {J}ones, {S}. {C}. and {L}afore, {J}. {P}. and {M}orse, {A}. and {N}uret, {M}. and {B}oone, {A}. and {B}alsamo, {G}. and {R}osnay de, {P}. and {D}echarme, {B}. and {H}arris, {P}. {P}. and {B}erges, {J}. {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}n evaluation of precipitation and evapotranspiration simulated by mesoscale models is carried out within the {A}frican {M}onsoon {M}ultidisciplinary {A}nalysis ({AMMA}) program. {S}ix models performed simulations of a mesoscale convective system ({MCS}) observed to cross part of {W}est {A}frica in {A}ugust 2005. {I}nitial and boundary conditions are found to significantly control the locations of rainfall at synoptic scales as simulated with either mesoscale or global models. {W}hen initialized and forced at their boundaries by the same analysis, all models forecast a westward-moving rainfall structure, as observed by satellite products. {H}owever, rainfall is also forecast at other locations where none was observed, and the nighttime northward propagation of rainfall is not well reproduced. {T}here is a wide spread in the rainfall rates across simulations, but also among satellite products. {T}he range of simulated meridional fluctuations of evapotranspiration ({E}) appears reasonable, but {E} displays an overly strong zonal symmetry. {O}ffline land surface modeling and surface energy budget considerations show that errors in the simulated {E} are not simply related to errors in the surface evaporative fraction, and involve the significant impact of cloud cover on the incoming surface shortwave flux. {T}he use of higher horizontal resolution (a few km) enhances the variability of precipitation, evapotranspiration, and precipitable water ({PW}) at the mesoscale. {I}t also leads to a weakening of the daytime precipitation, less evapotranspiration, and smaller {PW} amounts. {T}he simulated {MCS} propagates farther northward and somewhat faster within an overall drier atmosphere. {T}hese changes are associated with a strengthening of the links between {PW} and precipitation.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST}},
  booktitle = {},
  journal = {{W}eather and {F}orecasting},
  volume = {25},
  numero = {1},
  pages = {37--60},
  ISSN = {0882-8156},
  year = {2010},
  DOI = {10.1175/2009waf2222250.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083078},
}