{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T08:12:50Z","timestamp":1774771970031,"version":"3.50.1"},"reference-count":32,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T00:00:00Z","timestamp":1684454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Contrat de Plan Etat-R\u00e9gion 2015\u20132020 \u201cSO-OMP-MIP\u201d","award":["2016-40"],"award-info":[{"award-number":["2016-40"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The correction of atmospheric effects on optical remote sensing products is an essential component of Analysis Ready Data (ARD) production lines. The MAJA processor aims at providing accurate time series of surface reflectances over land for satellite missions, such as Sentinel-2, Ven\u03bcs, and Landsat 8. The Centre d\u2019\u00c9tudes Spatiales de la Biosph\u00e8re (CESBIO) and the Centre National d\u2019\u00c9tudes Spatiales (CNES) share a common effort to maintain, validate, and improve the MAJA processor, using state-of-the-art ground measurement sites, and participating in processor inter-comparisons, such as the Atmospheric Correction Intercomparison Exercise (ACIX). While contributing to the second ACIX-II Land validation exercise, it was found that the candidate MAJA dataset could not adequately be compared to the main reference dataset. MAJA reflectances were corrected for adjacency and topography effects while the reference dataset was not, excluding MAJA from a part of the performance metrics of the exercise. The first part of the following study aims at providing complementary performance assessment to ACIX-II by reprocessing MAJA surface reflectances without adjacency nor topographic correction, allowing for an un-biased full resolution comparison with the reference Sentinel-2 dataset. The second part of the study consists of validating MAJA against surface reflectance measurements time series of up to five years acquired at three automated stations. Both approaches provide extensive insights on the quality of MAJA Sentinel-2 Level 2 products.<\/jats:p>","DOI":"10.3390\/rs15102665","type":"journal-article","created":{"date-parts":[[2023,5,22]],"date-time":"2023-05-22T02:00:27Z","timestamp":1684720827000},"page":"2665","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Assessment of the Performance of the Atmospheric Correction Algorithm MAJA for Sentinel-2 Surface Reflectance Estimates"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0102-8737","authenticated-orcid":false,"given":"J\u00e9r\u00f4me","family":"Colin","sequence":"first","affiliation":[{"name":"Centre d\u2019\u00c9tudes Spatiales de la Biosph\u00e8re, UMR 5126 CESBIO (CNRS\/CNES\/UPS\/IRD), 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2358-0493","authenticated-orcid":false,"given":"Olivier","family":"Hagolle","sequence":"additional","affiliation":[{"name":"Centre d\u2019\u00c9tudes Spatiales de la Biosph\u00e8re, UMR 5126 CESBIO (CNRS\/CNES\/UPS\/IRD), 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"},{"name":"Centre National d\u2019\u00c9tudes Spatiales, 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"given":"Lucas","family":"Landier","sequence":"additional","affiliation":[{"name":"Centre National d\u2019\u00c9tudes Spatiales, 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"given":"Sophie","family":"Coustance","sequence":"additional","affiliation":[{"name":"Centre National d\u2019\u00c9tudes Spatiales, 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"given":"Peter","family":"Kettig","sequence":"additional","affiliation":[{"name":"Centre National d\u2019\u00c9tudes Spatiales, 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"given":"Aim\u00e9","family":"Meygret","sequence":"additional","affiliation":[{"name":"Centre National d\u2019\u00c9tudes Spatiales, 18 Avenue Edouard Belin, CEDEX 9, 31401 Toulouse, France"}]},{"given":"Julien","family":"Osman","sequence":"additional","affiliation":[{"name":"CS GROUP, Zone d\u2019am\u00e9nagement concert\u00e9 de la Grande Plaine, 6 Rue Brindejonc des Moulinais, 31500 Toulouse, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4883-2765","authenticated-orcid":false,"given":"Eric","family":"Vermote","sequence":"additional","affiliation":[{"name":"NASA Goddard Space Flight Center Code 619, Greenbelt, MD 20771, USA"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,19]]},"reference":[{"key":"ref_1","unstructured":"Liang, S., and Wang, J. 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