@article{fdi:010086896,
  title = {{M}odeling actual water use under different irrigation regimes at district scale : application to the {FAO}-56 dual crop coefficient method},
  author = {{O}livera-{G}uerra, {L}. {E}. and {L}aluet, {P}. and {A}ltes, {V}. and {O}llivier, {C}hlo{\'e} and {P}ageot, {Y}. and {P}aolini, {G}. and {C}havanon, {E}. and {R}ivalland, {V}. and {B}oulet, {G}illes and {V}illar, {J}. {M}. and {M}erlin, {O}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he modeling of irrigation in land surface models are generally based on two soil moisture parameters {SM}threshold and {SM}target at which irrigation automatically starts and stops, respectively. {T}ypically, both parameters are usually set to optimal values allowing to fill the soil water reservoir with just the estimated right amount and to avoid crop water excess at all times. {T}he point is that agricultural practices greatly vary according to many factors (climatological, crop, soil, technical, human, etc.). {T}o fill the gap, we propose a new calibration method of {SM}threshold and {SM}target to represent the irrigation water use in any (optimal, deficit or even over) irrigation regime. {T}he approach is tested using the dual-crop coefficient {FAO}-56 model implemented at the field scale over an 8100 ha irrigation district in northeastern {S}pain where the irrigation water use is precisely monitored at the district scale. {B}oth irrigation parameters are first retrieved at monthly scale from the irrigation observations of year 2019. {T}he irrigation simulated by the {FAO}-56 model is then evaluated against observations at district and weekly scale over 5 years (2017-2021) separately. {T}he performance of the newly calibrated irrigation module is also assessed by comparing it against three other modules with varying configurations including default esti-mates for {SM}threshold and {SM}target. {T}he proposed irrigation module obtains systematically the best performance for each of the 5 years with an overall correlation coefficient of 0.95 +/- 0.02 and root-mean square error of 0.27 +/- 0.07 hm3/week (0.64 +/- 0.17 mm/day). {U}nlike the three irrigation modules used as benchmark, the new irrigation module is able to reproduce the farmers' practices throughout the year, and especially, to simulate the actual water use in the deficit and excess irrigation regimes occurring in the study area in spring and summer, respectively.},
  keywords = {{I}rrigation module ; {I}rrigation amounts ; {D}ata assimilation ; {W}ater balance model ; {ESPAGNE} ; {CATALOGNE} ; {PYRENEES}},
  booktitle = {},
  journal = {{A}gricultural {W}ater {M}anagement},
  volume = {278},
  numero = {},
  pages = {108119 [15 ]},
  ISSN = {0378-3774},
  year = {2023},
  DOI = {10.1016/j.agwat.2022.108119},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086896},
}