@article{fdi:010053163,
  title = {{S}oil surface moisture estimation over a semi-arid region using {ENVISAT} {ASAR} radar data for soil evaporation evaluation},
  author = {{Z}ribi, {M}ehrez and {C}hahbi, {A}. and {S}habou, {M}. and {L}ili-{C}habaane, {Z}. and {D}uchemin, {B}eno{\^i}t and {B}aghdadi, {N}. and {A}mri, {R}. and {C}hehbouni, {A}bdelghani},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he present paper proposes a method for the evaluation of soil evaporation, using soil moisture estimations based on radar satellite measurements. {W}e present firstly an approach for the estimation and monitoring of soil moisture in a semi-arid region in {N}orth {A}frica, using {ENVISAT} {ASAR} images, over two types of vegetation covers. {T}he first mapping process is dedicated solely to the monitoring of moisture variability related to rainfall events, over areas in the "non-irrigated olive tree" class of land use. {T}he developed approach is based on a simple linear relationship between soil moisture and the backscattered radar signal normalised at a reference incidence angle. {T}he second process is proposed over wheat fields, using an analysis of moisture variability due to both rainfall and irrigation. {A} semi-empirical model, based on the water-cloud model for vegetation correction, is used to retrieve soil moisture from the radar signal. {M}oisture mapping is carried out over wheat fields, showing high variability between irrigated and non-irrigated wheat covers. {T}his analysis is based on a large database, including both {ENVISAT} {ASAR} and simultaneously acquired ground-truth measurements (moisture, vegetation, roughness), during the 2008-2009 vegetation cycle. {F}inally, a semi-empirical approach is proposed in order to relate surface moisture to the difference between soil evaporation and the climate demand, as defined by the potential evaporation. {M}apping of the soil evaporation is proposed.},
  keywords = {{AFRIQUE} {DU} {NORD} ; {ZONE} {SEMIARIDE}},
  booktitle = {},
  journal = {{H}ydrology and {E}arth {S}ystem {S}ciences},
  volume = {15},
  numero = {1},
  pages = {345--358},
  ISSN = {1027-5606},
  year = {2011},
  DOI = {10.5194/hess-15-345-2011},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053163},
}