A Life-Size and Near Real-Time Test of Irrigation Scheduling with a Sentinel-2 Like Time Series (SPOT4-Take5) in Morocco

Remote Sensing

Michel Le Page⁵  Jihad Toumi¹  Sa໽ Khabba¹  Olivier Hagolle⁵  Adrien Tavernier⁵  M. Hakim Kharrou²  Salah Er-Raki³  Mireille Huc⁵  Mohamed Kasbani⁵  Abdelilah El Moutamanni⁵  Mohamed Yousfi²  Lionel Jarlan⁵  Benjamin Koetz⁴  Zoltan Vekerdy⁴  Massimo Menenti⁴  Diego Fernández-Prieto⁴ 

[1] LMME, Faculté des Sciences Semlalia, Université Cadi Ayyad de Marrakech, Marrakech 40000, Morocco; E-Mails:;ORMVAH, Office Régional de Mise en Valeur Agricole du Haouz, Marrakech 40000, Morocco; E-Mails:;LP2M2E, Faculté des Sciences et Techniques, Université Cadi Ayyad de Marrakech, Marrakech 40000, Morocco; E-Mail:CESBIO, Unité Mixte de Recherche (CNRS, UPS, CNES, IRD), Toulouse 31000, France;;CESBIO, Unité Mixte de Recherche (CNRS, UPS, CNES, IRD), Toulouse 31000, France; E-Mails:

关键词: irrigation;    scheduling;    remote sensing;    winter wheat;    near real-time;    evapotranspiration;    semi-arid areas;    Sentinel-2;    SPOT4 (Take5);   

DOI  :  10.3390/rs61111182

来源: mdpi

【 摘 要 】

This paper describes the setting and results of a real-time experiment of irrigation scheduling by a time series of optical satellite images under real conditions, which was carried out on durum wheat in the Haouz plain (Marrakech, Morocco), during the 2012/13 agricultural season. For the purpose of this experiment, the irrigation of a reference plot was driven by the farmer according to, mainly empirical, irrigation scheduling while test plot irrigations were being managed following the FAO-56 method, driven by remote sensing. Images were issued from the SPOT4 (Take5) data set, which aimed at delivering image time series at a decametric resolution with less than five-day satellite overpass similar to the time series ESA Sentinel-2 satellites will produce in the coming years. With a Root Mean Square Error (RMSE) of 0.91mm per day, the comparison between daily actual evapotranspiration measured by eddy-covariance and the simulated one is satisfactory, but even better at a five-day integration (0.59mm per day). Finally, despite a chaotic beginning of the experiment—the experimental plot had not been irrigated to get rid of a slaking crust, which prevented good emergence—our plot caught up and yielded almost the same grain crop with 14% less irrigation water. This experiment opens up interesting opportunities for operational scheduling of flooding irrigation sectors that dominate in the semi-arid Mediterranean area.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.