@article{fdi:010074769, title = {{A}n improved method to estimate soil hydrodynamic and hydraulic roughness parameters by using easily measurable data during flood irrigation experiments and inverse modelling}, author = {{A}losman, {M}. {A}. and {R}uy, {S}. and {B}uis, {S}. and {L}echarpentier, {P}. and {B}ader, {J}ean-{C}laude and {C}harron, {F}. and {O}lioso, {A}.}, editor = {}, language = {{ENG}}, abstract = {{S}urface irrigation is known as a highly water-consuming system and needs to be optimized to save water. {M}odels can be used for this purpose but require soil parameters at the field scale. {T}his paper aims to estimate effective soil parameters by combining: (i) a surface flow-infiltration model, namely {CALHY}; (ii) an automatic fitting algorithm based on the {SIMPLEX} method; and (iii) easily accessible and measurable data, some of which had never been used in such a process, thus minimizing parameter estimation errors. {T}he validation of the proposed approach was performed through three successive steps: (1) examine the physical meaning of the fitted parameters; (2) verify the accuracy of the proposed approach using data that had not been served in the fitting process; and (3) validate using data obtained from independent irrigation events. {T}hree parameters were estimated with a low uncertainty: the saturated hydraulic conductivity {K}s, the hydraulic roughness k, and the soil water depletion {D}elta theta. {T}he estimation uncertainty of the soil surface depressional storage parameter {H}-0 was of the same order of magnitude of its value. {A}ll experimental datasets were simulated very well. {P}erformance criteria were similar during both the fitting and validation stages.}, keywords = {flood irrigation ; hey field ; water flow ; infiltration ; inverse modeling ; kinematic wave ; {G}reen and {A}mpt model ; {SIMPLEX} algorithm}, booktitle = {}, journal = {{W}ater}, volume = {10}, numero = {11}, pages = {art. 1581 [15 p.]}, ISSN = {2073-4441}, year = {2018}, DOI = {10.3390/w10111581}, URL = {https://www.documentation.ird.fr/hor/fdi:010074769}, }