An inter-comparison exercise of Sentinel-2 radiometric validations assessed by independent expert groups

Autor: Dennis L. Helder, Bahjat Alhammoud, Brent N. Holben, Ferran Gascon, Yves Govaerts, Vincent Lonjou, Joel McCorkel, Emma R. Woolliams, Jeffrey S. Czapla-Myers, Nicolas Lamquin, Véronique Bruniquel, Vincent Leroy, Sébastien Clerc, Javier Gorroño, Julia A. Barsi, Bruno Lafrance
Rok vydání: 2019
Předmět:
Zdroj: Remote Sensing of Environment. 233:111369
ISSN: 0034-4257
DOI: 10.1016/j.rse.2019.111369
Popis: Copernicus is the European Union's Earth Observation and Monitoring programme, delivering free access to operational and historical environmental data to support applications in a wide range of societal benefit areas. To allow meaningful long-term environmental monitoring and robust decision-making, it is essential to ensure that satellite-retrieved products are of high quality and consistency. This paper describes the outputs of an international workshop on the radiometric calibration validation of the Copernicus Sentinel-2A and Sentinel-2B Multi-Spectral Instrument. A wide range of vicarious methodologies have been applied independently and then compared per type of target. All methods agree on the good radiometric performance of both Sentinel-2A and Sentinel-2B with respect to the mission requirements as well as on evidence of a slight bias between the two instruments. Comparisons of all these results are discussed to highlight the benefits and advantages of the methods as well as to propose potential improvements either for the methods themselves and/or for the comparison exercise.
Databáze: OpenAIRE
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