@article{fdi:010065472,
  title = {{M}onitoring irrigation consumption using high resolution {NDVI} image time series : calibration and validation in the {K}airouan {P}lain ({T}unisia)},
  author = {{S}aadi, {S}. and {S}imonneaux, {V}incent and {B}oulet, {G}illes and {R}aimbault, {B}runo and {M}ougenot, {B}ernard and {F}anise, {P}ascal and {A}yari, {H}. and {L}ili-{C}habaane, {Z}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}ater scarcity is one of the main factors limiting agricultural development in semi-arid areas. {R}emote sensing has long been used as an input for crop water balance monitoring. {T}he increasing availability of high resolution high repetitivity remote sensing (forthcoming {S}entinel-2 mission) offers an unprecedented opportunity to improve this monitoring. {I}n this study, regional crop water consumption was estimated with the {SAMIR} software ({SA}tellite {M}onitoring of {IR}rigation) using the {FAO}-56 dual crop coefficient water balance model fed with high resolution {NDVI} image time series providing estimates of both the actual basal crop coefficient and the vegetation fraction cover. {T}hree time series of {SPOT}5 images have been acquired over an irrigated area in central {T}unisia along with a {SPOT}4 time series acquired in the frame of the {SPOT}4-{T}ake5 experiment, which occurred during the first half of 2013. {U}sing invariant objects located in the scene, normalization of the {SPOT}5 time series was realized based on the {SPOT}4-{T}ake5 time series. {H}ence, a {NDVI} time profile was generated for each pixel. {T}he operationality and accuracy of the {SAMIR} tool was assessed at both plot scale (calibration based on evapotranspiration ground measurements) and perimeter scale (irrigation volumes) when several land use types, irrigation and agricultural practices are intertwined in a given landscape. {R}esults at plot scale gave after calibration an average {N}ash efficiency of 0.57 between observed and modeled evapotranspiration for two plots (barley and wheat). {W}hen aggregated for the whole season, modeled irrigation volumes at perimeter scale for all campaigns were close to observed ones (resp. 135 and 121 mm, overestimation of 11.5%). {H}owever, spatialized evapotranspiration and irrigation volumes need to be improved at finer timescales.},
  keywords = {remote sensing ; water balance ; {FAO} paper 56 ; evapotranspiration ; irrigation ; semi-arid {M}editerranean ; {SPOT} ; {TUNISIE} ; {KAIROUAN} ; {ZONE} {SEMIARIDE} ; {ZONE} {MEDITERRANEENNE}},
  booktitle = {},
  journal = {{R}emote {S}ensing},
  volume = {7},
  numero = {10},
  pages = {13005--13028},
  ISSN = {2072-4292},
  year = {2015},
  DOI = {10.3390/rs71013005},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065472},
}