@article{fdi:010082131,
  title = {{H}ydrological functioning of maize crops in {S}outhwest {F}rance using eddy covariance measurements and a land surface model},
  author = {{D}are-{I}dowu, {O}. and {J}arlan, {L}ionel and {L}e-{D}antec, {V}. and {R}ivalland, {V}. and {C}eschia, {E}. and {B}oone, {A}. and {B}rut, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he primary objective of this study is to evaluate the representation of the energy budget for irrigated maize crops in soil-vegetation-atmosphere transfer ({SVAT}) models. {T}o this end, a comparison between the original version of the interactions between the soil-biosphere-atmosphere ({ISBA}) model based on a single-surface energy balance and the new {ISBA}-multi-energy balance ({ISBA}-{MEB}) option was carried out. {T}he second objective is to analyze the intra- and inter-seasonal variability of the crop water budget by implementing {ISBA} and {ISBA}-{MEB} over six irrigated maize seasons between 2008 and 2019 in {L}amasquere, southwest {F}rance. {S}easonal dynamics of the convective fluxes were properly reproduced by both models with {R}-2 ranging between 0.66 and 0.80 ({RMSE} less than 59 {W} m(-2)) for the sensible heat flux and between 0.77 and 0.88 ({RMSE} less than 59 {W} m(-2)) for the latent heat flux. {S}tatistical metrics also showed that over the six crop seasons, for the turbulent fluxes, {ISBA}-{MEB} was consistently in better agreement with the in situ measurements with {RMSE} 8-30% lower than {ISBA}, particularly when the canopy was heterogeneous. {T}he ability of both models to partition the evapotranspiration ({ET}) term between soil evaporation and plant transpiration was also acceptable as transpiration predictions compared very well with the available sap flow measurements during the summer of 2015; ({ISBA}-{MEB} had slightly better statistics than {ISBA} with {R}-2 of 0.91 and a {RMSE} value of 0.07 mm h(-1)). {F}inally, the results from the analysis of the inter-annual variability of the crop water budget can be summarized as follows: (1) {T}he partitioning of the {ET} revealed a strong year-to-year variability with transpiration ranging between 40% and 67% of total {ET}, while soil evaporation was dominant in 2008 and 2010 due to the late and poor canopy development; (2) drainage losses are close to null because of an impervious layer at 60 cm depth; and (3) this very specific condition limited the inter-annual variability of irrigation scheduling as crops can always extract water that is stored in the root zone.},
  keywords = {{ISBA} ; {ISBA}-{MEB} ; eddy covariance ; sap flow ; partitioning ; water budget ; {FRANCE} ; {HAUTE} {GARONNE}},
  booktitle = {},
  journal = {{W}ater},
  volume = {13},
  numero = {11},
  pages = {1481 [25 p.]},
  year = {2021},
  DOI = {10.3390/w13111481},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082131},
}