Dominique Courault - Profile on Academia.edu (original) (raw)

Papers by Dominique Courault

HAL (Le Centre pour la Communication Scientifique Directe), 2014

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific r... more HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

HAL (Le Centre pour la Communication Scientifique Directe), Sep 22, 2014

HAL (Le Centre pour la Communication Scientifique Directe), Feb 3, 2014

Remote Sensing

This study aimed to develop an approach using Sentinel-1 synthetic aperture radar (SAR) data and ... more This study aimed to develop an approach using Sentinel-1 synthetic aperture radar (SAR) data and the Optirrig crop growth and irrigation model to detect irrigation dates and amounts for maize crops in the Occitanie region, Southern France. The surface soil moisture (SSM) derived from SAR data was analyzed for changes indicating irrigation events at the plot scale in four reference plots located in Montpellier (P1) and Tarbes (P2, P3, and P4). As rain most likely covers several square kilometers, while irrigation is decided at the plot scale, a difference between SSM signals at the grid scale (10 km × 10 km) and plot scale is a clear indication of a recent irrigation event. Its date and amount are then sought by forcing irrigation dates and amounts in Optirrig, selecting the most relevant (date, amount) combination from an appropriate criterion. As the observed SSM values hold for a depth of a few centimeters, while the modeled SSM values hold for exactly 10 cm, the best irrigation c...

HAL (Le Centre pour la Communication Scientifique Directe), Oct 2, 2019

Treated wastewater reuse (TWWR) helps to meet growing water demands, reduces degradation of the q... more Treated wastewater reuse (TWWR) helps to meet growing water demands, reduces degradation of the quality of conventional water resources and contributes to soil fertilization. But, TWWR requires irrigation methods that minimize risks for health and the environment.

HAL (Le Centre pour la Communication Scientifique Directe), Mar 1, 2012

HAL (Le Centre pour la Communication Scientifique Directe), 2011

The objective of this study was to analyze the sensitivity of radar signals in the X-band in irri... more The objective of this study was to analyze the sensitivity of radar signals in the X-band in irrigated grassland conditions. The backscattered radar signals were analyzed according to soil moisture and vegetation parameters using linear regression models. A time series of radar (TerraSAR-X and COSMO-SkyMed) and optical (SPOT and LANDSAT) images was acquired at a high temporal frequency in 2013 over a small agricultural region in southeastern France. Ground measurements were conducted simultaneously with the satellite data acquisitions during several grassland growing cycles to monitor the evolution of the soil and vegetation characteristics. The comparison between the Normalized Difference Vegetation Index (NDVI) computed from optical images and the in situ Leaf Area Index (LAI) showed a logarithmic relationship with a greater scattering for the dates

Mira M, Olioso A, Rivalland V, Courault D, Marloie O, Guillevic P INRA, EMMAH – UMR 1114, 84914 A... more Mira M, Olioso A, Rivalland V, Courault D, Marloie O, Guillevic P INRA, EMMAH – UMR 1114, 84914 Avignon, France, UAPV (Universite d’Avignon et des Pays de Vaucluse), EMMAH UMR 1114, Avignon, France Autonomous University of Barcelona, Spain CESBIO UMR 5126 UPS, CNRS, CNES, IRD, F-31401, Toulouse, France INRA, URFM – UR629, 84914 Avignon, France, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 maria.mira@avignon.inra.fr Telephone:0034.93.581.3273 Fax:0034.93.581.2001

HAL (Le Centre pour la Communication Scientifique Directe), 2020

Soumis le 30 juin 2010 ; accepté le 28 juin 2011 -© Revue Télédétection, 2011, vol. 10, n os 2-3,... more Soumis le 30 juin 2010 ; accepté le 28 juin 2011 -© Revue Télédétection, 2011, vol. 10, n os 2-3, p. 129-136 Résumé : Nous présentons dans ce travail une méthode de détection de changements appliquée à une séquence d'images de télédétection à hautes résolutions spatiale et temporelle pour détecter certaines pratiques culturales comme la fauche et l'irrigation. La zone d'étude est la plaine de la Crau située au sud-est de la France. Les images utilisées sont issues du satellite Taïwanais FORMOSAT-2 à hautes résolutions spatiale (8m) et temporelle (potentiellement une image par jour). La méthode proposée est basée sur la combinaison d'une technique de mesure de différence (dissimilarité) et des contours actifs basés régions. La première permet la localisation des zones qui ont évolué entre deux dates d'acquisition successives d'images d'une même scène, tandis que la deuxième affine le résultat en segmentant l'image de différence en zones de changements ...

Assessment and risk modeling of airborne enteric viruses emitted from wastewater reused for irrigation

Science of The Total Environment, 2017

Reclamation of wastewater (WW) for irrigation, after treatment represents a challenge that could ... more Reclamation of wastewater (WW) for irrigation, after treatment represents a challenge that could alleviate pressure on water resources and address the increasing demand for agriculture. However, the risks to human health must be assessed, particularly those related to human enteric viruses that resist standard treatments in most wastewater treatment plants (WWTP). The risks associated with exposure to viral bioaerosols near WWTP and near agricultural plots irrigated with WW are poorly documented. The objectives of this study were to 1) better characterize human enteric viruses found in bioaerosols near a "standard WWTP" and over fields irrigated with treated WW and 2) propose a numeric model to assess the health risk to populations located close to the irrigated areas, with particular attention to norovirus, which is responsible for most viral gastroenteritis in France. Water and air samples were collected at various locations in the largest French WW-irrigated site near Clermont-Ferrand, at the WWTP entrance and after treatment, in the air above activated sludge basins, and above fields irrigated with WW. Various enteric viruses were found in the water samples collected both before and after treatment. Norovirus was the most abundant with >10e4 genome copies/l (GC/L) before treatment and ~10e3 GC/L after treatment. Low quantities (<10e3GC/m3) were detected in the air above active sludge pools and irrigated plots. Hepatitis E virus was detected in all sampled compartments. A quantitative microbial risk assessment (QMRA) approach, including a simplified atmospheric dispersion model, allowed assessment of norovirus infection risk. The Bayesian QMRA approach considered wind speed measurements over 21years, and the variability and uncertainty of all measurements throughout the chain up to the risk. The probability of infection within one year for the most exposed WWTP employees was >10e-4 for strong wind speed (≥3m/s) and a constant emission rate of 8e3 GC/m3/s. This probability decreases by 3 log when the distance to the emission source is doubled. This information can aid development of safe water reuse policies in terms of local setback distance and wind conditions for wastewater reuse.

Analyse des hétérogénéites intraparcellaires des sols par télédétection

Irrigation Advisory Services: Farmers preferences and willingness to pay for innovation

Outlook on Agriculture

Irrigation Advisory Services (IAS) are powerful management instruments aiming to achieve the best... more Irrigation Advisory Services (IAS) are powerful management instruments aiming to achieve the best efficiency in irrigation water use. So far the literature on farmers’ preferences for a specific scheme design of IAS’ characteristics and the related willingness to pay (WTP) is scant. This study provides evidence on farmers’ preference towards six attributes related to the IAS configuration by using a hypothetical choice experiment. Data were collected from an original survey among 108 farmers from Spain, The Netherlands, Italy, Poland and South Africa. Moreover, we investigated the interplay between these preferences and the individual risk attitude (elicited through a lottery task) as a novel contribution. On average, the results suggest a clear farmers’ preference, especially for receiving weather forecasts from the service and for the feature related to water data recording; as the opposite, on average, crop water requirement seems irrelevant. Finally, we found that farmers’ WTP f...