@article{fdi:010086423, title = {{M}edium-resolution mapping of evapotranspiration at the catchment scale based on thermal infrared {MODIS} data and {ERA}-interim reanalysis over {N}orth {A}frica}, author = {{D}iarra, {A}. and {J}arlan, {L}ionel and {K}habba, {S}. and {L}e {P}age, {M}ichel and {E}r-{R}aki, {S}. and {B}alaghi, {R}. and {C}harafi, {S}. and {C}hehbouni, {A}bdelghani and {E}l {A}lami, {R}.}, editor = {}, language = {{ENG}}, abstract = {{A}ccurate quantification of evapotranspiration ({ET}) at the watershed scale remains an important research challenge for managing water resources in arid and semiarid areas. {I}n this study, daily latent heat flux ({LE}) maps at the kilometer scale were derived from the two-source energy budget ({TSEB}) model fed by the {MODIS} leaf area index ({LAI}), land surface temperature ({LST}) products, and meteorological data from {ERA}-{I}nterim reanalysis from 2001 to 2015 on the {T}ensift catchment (center of {M}orocco). {A}s a preliminary step, both {ERA}-{I}nterim and predicted {LE} at the time of the satellite overpass are evaluated in comparison to a large database of in situ meteorological measurements and eddy covariance ({EC}) observations, respectively. {ERA}-{I}nterim compared reasonably well to in situ measurements, but a positive bias on air temperature was highlighted because meteorological stations used for the evaluation were mainly installed on irrigated fields while the grid point of {ERA}-{I}nterim is representative of larger areas including bare (and hot) soil. {L}ikewise, the predicted {LE} was in good agreement with the {EC} measurements gathered on the main crops of the region during 15 agricultural seasons with a correlation coefficient r = 0.70 and a reasonable bias of 30 {W}/m(2). {A}fter extrapolating the instantaneous {LE} estimates to {ET} daily values, monthly {ET} was then assessed in comparison to monthly irrigation water amounts provided by the local agricultural office added to {CRU} precipitation dataset with a reasonable agreement; the relative error was more than 89% but the correlation coefficient r reached 0.80. {S}easonal and interannual evapotranspiration was analyzed in relation to local climate and land use. {L}astly, the potential use for improving the early prediction of grain yield, as well as detecting newly irrigated areas for arboriculture, is also discussed. {T}he proposed method provides a relatively simple way for obtaining spatially distributed daily estimates of {ET} at the watershed scale, especially for not ungauged catchments.}, keywords = {evapotranspiration ; {TSEB} ; {MODIS} ; {ERA}-{I}nterim ; watershed scale ; {MAROC} ; {ZONE} {SEMIARIDE} ; {ZONE} {MEDITERRANEENNE}}, booktitle = {}, journal = {{R}emote {S}ensing}, volume = {14}, numero = {20}, pages = {5071 [24 p.]}, year = {2022}, DOI = {10.3390/rs14205071}, URL = {https://www.documentation.ird.fr/hor/fdi:010086423}, }