{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T15:20:32Z","timestamp":1771514432196,"version":"3.50.1"},"reference-count":31,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2011,6,23]],"date-time":"2011-06-23T00:00:00Z","timestamp":1308787200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The objective of this study is to validate an approach based on the change detection in multitemporal TerraSAR images (X-band) for mapping soil moisture in the Sahelian area. In situ measurements were carried out simultaneously with TerraSAR-X acquisitions on two study sites in Niger. The results show the need for comparing the difference between the rainy season image and a reference image acquired in the dry season. The use of two images enables a reduction of the roughness effects. The soils of plateaus covered with erosion crusts are dry throughout the year while the fallows show more significant moisture during the rainy season. The accuracy on the estimate of soil moisture is about 2.3% (RMSE) in comparison with in situ moisture contents.<\/jats:p>","DOI":"10.3390\/rs3061266","type":"journal-article","created":{"date-parts":[[2011,6,24]],"date-time":"2011-06-24T08:19:30Z","timestamp":1308903570000},"page":"1266-1283","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Estimating Surface Soil Moisture from TerraSAR-X Data over Two Small Catchments in the Sahelian Part of Western Niger"],"prefix":"10.3390","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9461-4120","authenticated-orcid":false,"given":"Nicolas","family":"Baghdadi","sequence":"first","affiliation":[{"name":"CEMAGREF, UMR TETIS, 500 rue Fran\u00e7ois Breton, 34093 Montpellier Cedex 5, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pauline","family":"Camus","sequence":"additional","affiliation":[{"name":"CEMAGREF, UMR TETIS, 500 rue Fran\u00e7ois Breton, 34093 Montpellier Cedex 5, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicolas","family":"Beaugendre","sequence":"additional","affiliation":[{"name":"SIRS, 59650 Villeneuve d\u2019Ascq, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oumarou Malam","family":"Issa","sequence":"additional","affiliation":[{"name":"Universit\u00e9 de Reims Champagne Ardenne, GEGENA EA 3795, 51687 Reims, France"},{"name":"IRD, BIOEMCO, Niamey, Niger"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6141-8222","authenticated-orcid":false,"given":"Mehrez","family":"Zribi","sequence":"additional","affiliation":[{"name":"CESBIO, 31401 Toulouse, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jean Fran\u00e7ois","family":"Desprats","sequence":"additional","affiliation":[{"name":"BRGM, RNSC, 34000 Montpellier, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jean Louis","family":"Rajot","sequence":"additional","affiliation":[{"name":"IRD, BIOEMCO, Niamey, Niger"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chadi","family":"Abdallah","sequence":"additional","affiliation":[{"name":"Remote Sensing Centre, Lebanese National Council for Scientific Research, Beirut, Lebanon"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christophe","family":"Sannier","sequence":"additional","affiliation":[{"name":"SIRS, 59650 Villeneuve d\u2019Ascq, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2011,6,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/S0065-2504(08)60055-0","article-title":"Structure and function of microphytic soil crusts in wildland ecosystems of arid to semi-arid regions","volume":"Volume 20","author":"Begon","year":"1990","journal-title":"Advances in Ecological Research"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"389","DOI":"10.1071\/SR9940389","article-title":"Microbiotic soil crusts: A review of their role in soil and ecological processes in the rangeland of Australia","volume":"32","author":"Eldridge","year":"1994","journal-title":"Aust. 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