Evaluation of SMOS, SMAP, ASCAT and Sentinel-1 soil moisture products at sites in southwestern France
| hal.structure.identifier | Territoires, Environnement, Télédétection et Information Spatiale [UMR TETIS] | |
| dc.contributor.author | EL HAJJ, M. | |
| hal.structure.identifier | Territoires, Environnement, Télédétection et Information Spatiale [UMR TETIS] | |
| dc.contributor.author | BAGHDADI, N. | |
| hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
| dc.contributor.author | ZRIBI, Mehrez | |
| hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
| dc.contributor.author | RODRIGUEZ‐FERNANDEZ, Nemesio | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | WIGNERON, J.P. | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | AL-YAARI, A. | |
| hal.structure.identifier | Centre d'études spatiales de la biosphère [CESBIO] | |
| dc.contributor.author | AHMAD, Al Bitar | |
| hal.structure.identifier | Centre national de recherches météorologiques [CNRM] | |
| dc.contributor.author | ALBERGEL, C. | |
| hal.structure.identifier | Centre national de recherches météorologiques [CNRM] | |
| dc.contributor.author | CALVET, J.C. | |
| dc.date.accessioned | 2024-04-08T12:08:34Z | |
| dc.date.available | 2024-04-08T12:08:34Z | |
| dc.date.created | 2018 | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 2072-4292 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196525 | |
| dc.description.abstractEn | This study evaluates the accuracy of several recent remote sensing Surface Soil Moisture (SSM) products at sites in southwestern France. The products used are Soil Moisture Active Passive "SMAP" (level 3: 36 km x 36 km, level 3 enhanced: 9 km x 9 km, and Level 2 SMAP/Sentinel-1: 1 km x 1km), Advanced Scatterometer "ASCAT" (level 2 with three spatial resolution 25 km x 25 km, 12.5 km x 12.5 km, and 1 km x 1 km), Soil Moisture and Ocean Salinity "SMOS" (SMOS INRA-CESBIO "SMOS-IC", SMOS Near-Real-Time "SMOS-NRT", SMOS Centre Aval de Traitement des Données SMOS level 3 "SMOS-CATDS", 25 km x 25 km) and Sentinel-1(S1) (25 km x 25 km, 9 km x 9 km, and 1 km x 1 km). The accuracy of SSM products was computed using in situ measurements of SSM observed at a depth of 5 cm. In situ measurements were obtained from the SMOSMANIA ThetaProbe (Time Domaine reflectometry) network (7 stations between 1 January 2016 and 30 June 2017) and additional field campaigns (near Montpellier city in France, between 1 January 2017 and 31 May 2017) in southwestern France. For our study sites, results showed that (i) the accuracy of the Level 2 SMAP/Sentinel-1 was lower than that of SMAP-36 km and SMAP-9 km; (ii) the SMAP-36 km and SMAP-9 km products provide more precise SSM estimates than SMOS products (SMOS-IC, SMOS-NRT, and SMOS-CATDS), mainly due to higher sensitivity of SMOS to RFI (Radio Frequency Interference) noise; and (iii) the accuracy of SMAP-36 km and SMAP-9 km products was similar to that of ASCAT (ASCAT-25 km, ASCAT-12.5 km and ASCAT-1 km) and S1 (S1-25 km, S1-9 km, and S1-1 km) products. The accuracy of SMAP, Sentinel-1 and ASCAT SSM products calculated using the average of statistics obtained on each site is defined by a bias of about -3.2 vol. %, RMSD (Root Mean Square Difference) about 7.6 vol. %, ubRMSD (unbiased Root Mean Square Difference) about 5.6 vol. %, and R coefficient about 0.57. For SMOS products, the station average bias, RMSD, ubRMSD, and R coefficient were about -10.6 vol. %, 12.7 vol. %, 5.9 vol. %, and 0.49, respectively. | |
| dc.language.iso | en | |
| dc.publisher | MDPI | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.subject | CARTOGRAPHIE | |
| dc.subject | CYCLE DE L'EAU | |
| dc.subject | TELEDETECTION | |
| dc.subject | HUMIDITE DU SOL | |
| dc.subject | DONNEE DE SATELLITE | |
| dc.subject | IMAGE SATELLITE | |
| dc.subject.en | remote sensing | |
| dc.subject.en | satellite data | |
| dc.subject.en | cartography | |
| dc.subject.en | soil water content | |
| dc.title.en | Evaluation of SMOS, SMAP, ASCAT and Sentinel-1 soil moisture products at sites in southwestern France | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3390/rs10040569 | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.journal | Remote Sensing | |
| bordeaux.page | 17 p. | |
| bordeaux.volume | 10 | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.issue | 4 | |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01900522 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01900522v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing&rft.date=2018&rft.volume=10&rft.issue=4&rft.spage=17%20p.&rft.epage=17%20p.&rft.eissn=2072-4292&rft.issn=2072-4292&rft.au=EL%20HAJJ,%20M.&BAGHDADI,%20N.&ZRIBI,%20Mehrez&RODRIGUEZ%E2%80%90FERNANDEZ,%20Nemesio&WIGNERON,%20J.P.&rft.genre=article |
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