Underlining the value of this mission for Europe, Volker Liebig commented: "This satellite is an important element of GMES and will enable Europe to continuously observe changes in the environment".
Global Monitoring for Environment and Security (GMES) aims to deliver environment and security services and is being led by the European Commission. It is the European response to the ever-increasing demands of effective environmental policies. At the same time, it is the European contribution to the Global Earth Observation System of Systems (GEOSS).
ESA is responsible for implementation of the GMES Space Component, a set of earth observation missions involving ESA, EU/ESA Member States and other partners. Central elements of the Space Component are the five families of Sentinel missions.
Sentinel-2 will deliver crucial data for information services to the EU and its Member States under GMES. The services fed by it cover areas such as climate change, sustainable development, environmental policies, European civil protection, common agricultural policy, development aid, humanitarian aid and the Common Foreign & Security Policy.
Sentinel-2 will support the operational generation of products such as the mapping of land cover, land use, change detection and geophysical variables. The mission objective is systematic coverage of the earth’s land surface (from -56° to +83° latitude) to produce cloud-free imagery typically every 15 to 30 days over Europe.
Sentinel-2 features a 290 km-wide coverage, 10-20 m spatial resolution, 13 optical channel instrument (operating from visible-near infrared to shortwave infrared) and will ensure enhanced-quality continuity with existing missions Spot and Landsat. It will provide improved revisit time, swath width, coverage area, spectral bands, calibration and image quality. These features will enable it to contribute effectively to GMES needs for operational land and emergency services.
ESA carried out the Sentinel-2 definition phase over 2005/2006. The implementation phase started in October 2007. The launch of the first Sentinel-2 satellite is planned for 2012.
The industrial consortium led by Astrium-GmbH (platform and satellite prime) includes a number of core-team partners: Astrium SAS is responsible for the payload instrument and system support activities; Boostec (F) is providing the three-mirror Silicon carbide telescope; CASA (E) is responsible for satellite structural and thermal activities; Jena-Optronik (D) is responsible for the instrument electrical architecture including video signal processing and data compression; Sener (E) is supplying the instrument calibration and shutter mechanism.
François Spoto | alfa
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