{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T13:10:31Z","timestamp":1775913031327,"version":"3.50.1"},"reference-count":53,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2017,6,10]],"date-time":"2017-06-10T00:00:00Z","timestamp":1497052800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>As part of the Copernicus programme of the European Commission (EC), the European Space Agency (ESA) has developed and is currently operating the Sentinel-2 mission that is acquiring high spatial resolution optical imagery. This article provides a description of the calibration activities and the status of the mission products validation activities after one year in orbit. Measured performances, from the validation activities, cover both Top-Of-Atmosphere (TOA) and Bottom-Of-Atmosphere (BOA) products. The presented results show the good quality of the mission products both in terms of radiometry and geometry and provide an overview on next mission steps related to data quality aspects.<\/jats:p>","DOI":"10.3390\/rs9060584","type":"journal-article","created":{"date-parts":[[2017,6,12]],"date-time":"2017-06-12T10:27:59Z","timestamp":1497263279000},"page":"584","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":490,"title":["Copernicus Sentinel-2A Calibration and Products Validation Status"],"prefix":"10.3390","volume":"9","author":[{"given":"Ferran","family":"Gascon","sequence":"first","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]},{"given":"Catherine","family":"Bouzinac","sequence":"additional","affiliation":[{"name":"CS-SI (Communication & Syst\u00e8mes\u2014Syst\u00e8mes d'Information), Toulouse 31506, France"}]},{"given":"Olivier","family":"Th\u00e9paut","sequence":"additional","affiliation":[{"name":"CS-SI (Communication & Syst\u00e8mes\u2014Syst\u00e8mes d'Information), Toulouse 31506, France"}]},{"given":"Mathieu","family":"Jung","sequence":"additional","affiliation":[{"name":"Airbus Defence and Space, Toulouse 31402, France"}]},{"given":"Benjamin","family":"Francesconi","sequence":"additional","affiliation":[{"name":"Thales Alenia Space, Cannes La Bocca 06156, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7394-6137","authenticated-orcid":false,"given":"J\u00e9r\u00f4me","family":"Louis","sequence":"additional","affiliation":[{"name":"Telespazio, Toulouse 31023, France"}]},{"given":"Vincent","family":"Lonjou","sequence":"additional","affiliation":[{"name":"CNES (Centre National d'Etudes Spatiales), Toulouse 31401, France"}]},{"given":"Bruno","family":"Lafrance","sequence":"additional","affiliation":[{"name":"CS-SI (Communication & Syst\u00e8mes\u2014Syst\u00e8mes d'Information), Toulouse 31506, France"}]},{"given":"St\u00e9phane","family":"Massera","sequence":"additional","affiliation":[{"name":"IGN (Institut G\u00e9ographique National) Espace, Ramonville-Saint-Agne 31520, France"}]},{"given":"Ang\u00e9lique","family":"Gaudel-Vacaresse","sequence":"additional","affiliation":[{"name":"CNES (Centre National d'Etudes Spatiales), Toulouse 31401, France"}]},{"given":"Florie","family":"Languille","sequence":"additional","affiliation":[{"name":"CNES (Centre National d'Etudes Spatiales), Toulouse 31401, France"}]},{"given":"Bahjat","family":"Alhammoud","sequence":"additional","affiliation":[{"name":"ARGANS, Plymouth PL6 8BX, the United Kingdom"}]},{"given":"Fran\u00e7oise","family":"Viallefont","sequence":"additional","affiliation":[{"name":"ONERA (Office National d'Etudes et Recherches A\u00e9rospatiales), Toulouse 31055, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4626-9393","authenticated-orcid":false,"given":"Bringfried","family":"Pflug","sequence":"additional","affiliation":[{"name":"DLR (Deutschen Zentrums f\u00fcr Luft- und Raumfahrt), Berlin 12489, Germany"}]},{"given":"Jakub","family":"Bieniarz","sequence":"additional","affiliation":[{"name":"DLR (Deutschen Zentrums f\u00fcr Luft- und Raumfahrt), Berlin 12489, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7393-5910","authenticated-orcid":false,"given":"S\u00e9bastien","family":"Clerc","sequence":"additional","affiliation":[{"name":"ARGANS, Plymouth PL6 8BX, the United Kingdom"}]},{"given":"La\u00ebtitia","family":"Pessiot","sequence":"additional","affiliation":[{"name":"CS-SI (Communication & Syst\u00e8mes\u2014Syst\u00e8mes d'Information), Toulouse 31506, France"}]},{"given":"Thierry","family":"Tr\u00e9mas","sequence":"additional","affiliation":[{"name":"CNES (Centre National d'Etudes Spatiales), Toulouse 31401, France"}]},{"given":"Enrico","family":"Cadau","sequence":"additional","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]},{"given":"Roberto","family":"De Bonis","sequence":"additional","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]},{"given":"Claudia","family":"Isola","sequence":"additional","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]},{"given":"Philippe","family":"Martimort","sequence":"additional","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]},{"given":"Val\u00e9rie","family":"Fernandez","sequence":"additional","affiliation":[{"name":"ESA (European Space Agency), Paris 75015, France"}]}],"member":"1968","published-online":{"date-parts":[[2017,6,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1016\/j.rse.2011.11.026","article-title":"Sentinel-2: ESA\u2019s Optical High-Resolution Mission for GMES Operational Services","volume":"120","author":"Drusch","year":"2012","journal-title":"Remote Sens. 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