@article{fdi:010078169, title = {{M}ulti-scale evaluation of the {TSEB} model over a complex agricultural landscape in {M}orocco}, author = {{E}lfarkh, {J}. and {E}zzahar, {J}. and {E}r-{R}aki, {S}. and {S}imonneaux, {V}incent and {H}ssaine, {B}. {A}. and {R}achidi, {S}. and {B}rut, {A}. and {R}ivalland, {V}. and {K}habba, {S}. and {C}hehbouni, {A}bdelghani and {J}arlan, {L}ionel}, editor = {}, language = {{ENG}}, abstract = {{A}n accurate assessment of evapotranspiration ({ET}) is crucially needed at the basin scale for studying the hydrological processes and water balance especially from upstream to downstream. {I}n the mountains, this term is poorly understood because of various challenges, including the vegetation complexity, plant diversity, lack of available data and because the in situ direct measurement of {ET} is difficult in complex terrain. {T}he main objective of this work was to investigate the potential of a {T}wo-{S}ource-{E}nergy-{B}alance model ({TSEB}) driven by the {L}andsat and {MODIS} data for estimating {ET} over a complex mountain region. {T}he complexity is associated with the type of the vegetation canopy as well as the changes in topography. {F}or validating purposes, a large-aperture scintillometer ({LAS}) was set up over a heterogeneous transect of about 1.4 km to measure sensible ({H}) and latent heat ({LE}) fluxes. {A}dditionally, two towers of eddy covariance ({EC}) systems were installed along the {LAS} transect. {F}irst, the model was tested at the local scale against the {EC} measurements using multi-scale remote sensing ({MODIS} and {L}andsat) inputs at the satellite overpasses. {T}he obtained averaged values of the root mean square error ({RMSE}) and correlation coefficient ({R}) were about 72.4 {W}m(-2) and 0.79 and 82.0 {W}m(-2) and 0.52 for {L}andsat and {MODIS} data, respectively. {S}econdly, the potential of the {TSEB} model for evaluating the latent heat fluxes at large scale was investigated by aggregating the derived parameters from both satellites based on the {LAS} footprint. {A}s for the local scale, the comparison of the latent heat fluxes simulated by {TSEB} driven by {L}andsat data performed well against those measured by the {LAS} ({R} = 0.69, {RMSE} = 68.0 {W}m(-2)), while slightly more scattering was observed when {MODIS} products were used ({R} = 0.38, {RMSE} = 99.8 {W}m(-2)). {B}ased on the obtained results, it can be concluded that (1) the {TSEB} model can be fairly used to estimate the evapotranspiration over the mountain regions; and (2) medium- to high-resolution inputs are a better option than coarse-resolution products for describing this kind of complex terrain.}, keywords = {latent heat flux ; sensible heat flux ; two-source energy balance ; eddy ; covariance system ; scintillometer ; {MAROC}}, booktitle = {}, journal = {{R}emote {S}ensing}, volume = {12}, numero = {7}, pages = {[25 ]}, year = {2020}, DOI = {10.3390/rs12071181}, URL = {https://www.documentation.ird.fr/hor/fdi:010078169}, }