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Wetland monitoring with Global Navigation Satellite System reflectometry / Son V. Nghiem in Earth and space science, vol 4 n° 1 (January 2017)  

Public [article]  inEarth and space science > vol 4 n° 1 (January 2017) . - pp 16 - 39 Titre : Wetland monitoring with Global Navigation Satellite System reflectometry Type de document : Article/Communication Auteurs : Son V. Nghiem, Auteur ; Cinzia Zuffada, Auteur ; Rashmi Shah, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 16 - 39 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] delta [Termes IGN] Ebre (bassin) [Termes IGN] Espagne [Termes IGN] méthane [Termes IGN] réflectométrie par GNSS [Termes IGN] zone humide Résumé : (auteur) Information about wetland dynamics remains a major missing gap in characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage. A review of current satellite methods to delineate and monitor wetland change shows some recent advances, but much improved sensing technologies are still needed for wetland mapping, not only to provide more accurate global inventories but also to examine changes spanning multiple decades. Global Navigation Satellite Systems Reflectometry (GNSS-R) signatures from aircraft over the Ebro River Delta in Spain and satellite measurements over the Mississippi River and adjacent watersheds demonstrate that inundated wetlands can be identified under different vegetation conditions including a dense rice canopy and a thick forest with tall trees, where optical sensors and monostatic radars provide limited capabilities. Advantages as well as constraints of GNSS-R are presented, and the synergy with various satellite observations are considered to achieve a breakthrough capability for multidecadal wetland dynamics monitoring with frequent global coverage at multiple spatial and temporal scales. Numéro de notice : A2017-278 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1002/2016EA000194 En ligne : https://doi.org/10.1002/2016EA000194 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85302 [article]