C-band radar data and in situ measurements for the monitoring of wheat crops in a semi-arid area (center of Morocco) - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Earth System Science Data Année : 2021

C-band radar data and in situ measurements for the monitoring of wheat crops in a semi-arid area (center of Morocco)

Jamal Ezzahar
  • Fonction : Auteur
Saïd Khabba
Salah Er-Raki
Adnane Chakir
  • Fonction : Auteur
Bouchra Ait Hssaine
  • Fonction : Auteur
Valérie Le Dantec
  • Fonction : Auteur
Antoine Beaumont
  • Fonction : Auteur
Mohamed Kasbani
  • Fonction : Auteur
Lionel Jarlan

Résumé

A better understanding of the hydrological functioning of irrigated crops using remote sensing observations is of prime importance in semi-arid areas where water resources are limited. Radar observations, available at high resolution and with a high revisit time since the launch of Sentinel-1 in 2014, have shown great potential for the monitoring of the water content of the upper soil and of the canopy. In this paper, a complete set of data for radar signal analysis is shared with the scientific community for the first time to our knowledge. The data set is composed of Sentinel-1 products and in situ measurements of soil and vegetation variables collected during three agricultural seasons over drip-irrigated winter wheat in the Haouz plain in Morocco. The in situ data gather soil measurements (time series of half-hourly surface soil moisture, surface roughness and agricultural practices) and vegetation measurements collected every week/2 weeks including aboveground fresh and dry biomasses, vegetation water content based on destructive measurements, the cover fraction, the leaf area index, and plant height. Radar data are the backscattering coefficient and the interferometric coherence derived from Sentinel-1 GRDH (Ground Range Detected High Resolution) and SLC (Single Look Complex) products, respectively. The normalized difference vegetation index derived from Sentinel-2 data based on Level-2A (surface reflectance and cloud mask) atmospheric-effects-corrected products is also provided. This database, which is the first of its kind made available open access, is described here comprehensively in order to help the scientific community to evaluate and to develop new or existing remote sensing algorithms for monitoring wheat canopy under semi-arid conditions. The data set is particularly relevant for the development of radar applications including surface soil moisture and vegetation variable retrieval using either physically based or empirical approaches such as machine and deep learning algorithms.

The database is archived in the DataSuds repository and is freely accessible via the following DOI: https://doi.org/10.23708/8D6WQC (Ouaadi et al., 2020a).

Fichier principal
Vignette du fichier
essd-13-3707-2021.pdf (23.88 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03668280 , version 1 (16-05-2022)

Licence

Paternité

Identifiants

Citer

Nadia Ouaadi, Jamal Ezzahar, Saïd Khabba, Salah Er-Raki, Adnane Chakir, et al.. C-band radar data and in situ measurements for the monitoring of wheat crops in a semi-arid area (center of Morocco). Earth System Science Data, 2021, 13, pp.3707-3731. ⟨10.5194/essd-13-3707-2021⟩. ⟨insu-03668280⟩
50 Consultations
22 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More