@article{fdi:010072067,
  title = {{I}mpact of {ET}0 method on the simulation of historical and future crop yields : a case study of millet growth in {S}enegal},
  author = {{R}amarohetra, {J}. and {S}ultan, {B}enjamin},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he reference evapotranspiration ({ET}0) is an integrated climatic variable from which many crop models derive simulated crop yields. {I}n most of these models, different equations are parameterized leaving the choice of the equation to the user. {H}owever, the impact of the choice of the {ET}0 equations on crop yield prediction has been little studied. {T}he present study proposes a sensitivity analysis of the impact of the choice of the {ET}0 equation on simulated millet yields using {SARRA}-{H} crop model over 12 {S}enegalese stations representative of the {S}udano-{S}ahelian climate conditions of {W}est {A}frica. {P}riestley-{T}aylor, a modified {P}riestley-{T}aylor and {H}argreaves equations lead to simulated yields up to 19% than those calculated using the {P}enman-{M}onteith equation. {D}espite high biases in wind speed, among the tested methods, the {P}enman-{M}onteith method remains the most robust to derive {ET}0 and yield over the major part of {S}enegal, {H}argreaves equation being more appropriated under dry climates. {T}he choice of {ET}0 formulation introduces uncertainties representing 8% of baseline yield regardless of precipitation changes; for wet conditions these uncertainties approach 30% of the overall climate change impact. {T}he choice of {ET}0 equation is increasingly important, with local temperature changes out to 4 degrees {C}, while extreme changes above 6 degrees {C} depend less on the {ET}0 equation.},
  keywords = {evapotranspiration ; climate change ; {W}est {A}frica ; crop model ; modelling ; uncertainties ; {ET}0 ; {SENEGAL}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {C}limatology},
  volume = {38},
  numero = {2},
  pages = {729--741},
  ISSN = {0899-8418},
  year = {2018},
  DOI = {10.1002/joc.5205},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072067},
}