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MeTMed 2015, 5th International Conference on Meteorology and Climatology of the Mediterranean 02/03/2015 04/03/2015 Istanbul Turquie
nom du congrès :
MeTMed 2015, 5th International Conference on Meteorology and Climatology of the Mediterranean
début du congrès :
02/03/2015
fin du congrès :
04/03/2015
ville du congrès :
Istanbul
pays du congrès :
Turquie
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Titre : The Theia land data centre Type de document : Article/Communication Auteurs : Nicolas Baghdadi, Auteur ; Selma Cherchali, Auteur ; Jean-François Faure, Auteur ; Marc Leroy, Auteur ; Pierre Maurel, Auteur ; Jean-Louis Roujean, Auteur ; Magali Stoll, Auteur Editeur : Antony [France] : Institut national de recherche en sciences et technologies pour l’environnement et l’agriculture IRSTEA (2012-2019) Année de publication : 2015 Conférence : MeTMed 2015, 5th International Conference on Meteorology and Climatology of the Mediterranean 02/03/2015 04/03/2015 Istanbul Turquie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection
[Termes IGN] image satelliteRésumé : (auteur) Nine French public institutions involved in Earth Observation, environmental studies and scientific research (CEA, CNES, Cirad, CNRS, IGN, INRA, IRD, Irstea and Météo-France), have launched in 2012 the Theia Land Data Centre, pooling their expertise and resources to make satellite data available to the environmental research community and to public policy actors. The Theia primary mission is (i) to build a national space data infrastructure able to produce value-added space data over land and provide services fitted to users’ needs, (ii) to support the sharing of experience and scientific knowledge on methodologies relevant to process and use space data for land thematic issues. To this end, Theia is working to produce data, products, methods and services linked to space observations of continental areas, from local (ecosystem and territory) to global scale, and make them available to the user community. It is backed up by a distributed spatial data infrastructure (SDI), and by scientific expertise hubs in various regions. The SDI links Montpellier (GEOSUD at Maison de la Télédétection) and Toulouse (CNES supported by the CESBIO laboratory, and IGN). The SDI provides already through its portal (www.theia-land.fr) a number of satellite products : yearly coverages at high resolution over the French territory with Spot and Rapid Eye, results from the Take 5 – Spot 4 experiment over 45 sites wordwide from February to June 2013 to simulate Sentinel-2 imagery, time series of orthorectified, atmospherically corrected Landsat data over France. Much more is to come : a first batch of 100 000 images over areas worldwide from the Spot World Heritage programme, provided free of charge for non commercial users, time series of river and lakes height worldwide, atmospherically corrected and monthly composites of Sentinel-2 data over an area equivalent to that of Europe, a new climate record of vegetal variables at global scale with AVHRR, and others. The organisation of science expertise hubs at national level has been initiated. A number of science teams have been created with the goal to prepare processing lines of value added satellite products, in particular from the Sentinel satellites, such as land cover, watered areas, snow areas, imperviousness areas, albedo, vegetal variables at decametric scale, water quality and height, and others. Numéro de notice : C2015-063 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans En ligne : https://hal.science/hal-02601335 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98521
