%0 Journal Article %9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES %A Ouaadi, N. %A Jarlan, Lionel %A Ezzahar, J. %A Khabba, S. %A Le Dantec, V. %A Rafi, Z. %A Zribi, M. %A Frison, P.L. %T Water stress detection over irrigated wheat crops in semi-arid areas using the diurnal differences of sentinel-1 backscatter %B 2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium (M2GARSS) %C Piscataway %D 2020 %L fdi:010084420 %G ENG %I IEEE %@ 978-1-7281-2191-8 %K MAROC ; ZONE SEMIARIDE %K HAOUZ PLAINE %M ISI:000604612500069 %P 306-309 %R 10.1109/M2GARSS47143.2020.9105171 %U https://www.documentation.ird.fr/hor/fdi:010084420 %> https://www.documentation.ird.fr/intranet/publi/2023-04/010084420.pdf %W Horizon (IRD) %X This work aims to investigate the sensitivity of the diurnal differences of radar backscatter to diurnal changes in the vegetation water content (VWC). Sentinel-1 backscattering coefficient differences between two orbits (morning and evening) are analyzed over an irrigated and voluntarily stressed wheat field. A physical model of backscatter prediction is evaluated for wheat and used to examine the sensitivity of radar differences to the VWC for a range of surface soil moisture and biomass conditions. Results highlight the potential of C-band diurnal differences for the monitoring the water stress over agricultural canopies %B M2GARSS. Mediterranean and Middle-East Geoscience and Remote Sensing Symposium %8 2020/03/09-11 %$ 062 ; 126 ; 076 ; 068