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Early Validation of Sentinel-2 L2A Processor and Products

Pflug, Bringfried and Main-Knorn, Magdalena and Bieniarz, Jakub and Debaecker, Vincent and Louis, Jerome (2016) Early Validation of Sentinel-2 L2A Processor and Products. In: Proceedings of ‘Living Planet Symposium 2016’, SP-740, pp. 1-6. Spacebooks Online. Living Planet Symposium 2016, 09 - 13 May 2016, Prague, Czech Republic. ISBN 978-92-9221-305-3 ISSN 1609-042X

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Official URL: http://www.spacebooks-online.com/product_info.php?cPath=104&products_id=17659&osCsid=6ac64d52e5dc1c4feccadac231729019


The Copernicus programme is a European initiative for the implementation of information Services dealing with environment and security, mainly based on observation data received from Earth Observation (EO) satellites. In the frame of this programme, ESA launched the Sentinel-2A optical imaging mission on 23th June 2015. This satellite delivers a new generation of optical data products designed to directly feed downstream services mainly related to land monitoring, emergency management and security. To ensure the highest quality of service for the Sentinel-2 mission, ESA set up the Sentinel-2 Mission Performance Centre (MPC) supported by several Expert Support Laboratories (ESL). This presentation reports early results of validation of the Sentinel-2 L2A processor Sen2Cor performed by the ESL-L2A. Sen2Cor Level 2A processing is applied to Top-Of-Atmosphere (TOA) Level 1C ortho-image reflectance products. Sen2Cor L2A outputs are a scene classification image, aerosol and water vapour maps and the ortho-image Bottom-Of-Atmosphere (BOA) corrected reflectance product. Scene classification is generated together with Quality Indicators for cloud and snow probabilities at 60 m resolution. In this poster we present the calibration and validation datasets used for our on-going L2A cal/val activities, covering different land cover types, different atmospheric conditions and including different latitudes in order to cover various solar angles and seasons. The already performed and on-going insitu campaigns for collecting atmospheric and ground reference data to support the L2A products validation are also described. The methodologies of calibration and validation are presented under the form of a workflow chart, showing the two steps validation approach for atmospheric correction (validation of aerosol optical thickness and water vapour estimates and the validation of BOA reflectance product), the validation approach for cloud screening and scene classification (stratified random sampling), and the interactions with the L2A processor calibration activities. Details are given about the specifics of each method. Finally, the results of Sen2Cor L2A products validation activities (at the time of the LPS 2016 conference) will be provided for the cloud screening and scene classification, as well as for the

Item URL in elib:https://elib.dlr.de/103120/
Document Type:Conference or Workshop Item (Poster)
Additional Information:sp-740\posters\pland_285pflug.pdf
Title:Early Validation of Sentinel-2 L2A Processor and Products
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pflug, Bringfriedbringfried.pflug (at) dlr.deUNSPECIFIED
Main-Knorn, Magdalenamagdalena.main-knorn (at) dlr.deUNSPECIFIED
Bieniarz, Jakubjakub.bieniarz (at) dlr.deUNSPECIFIED
Debaecker, Vincentvincent.debaecker (at) telespazio.comUNSPECIFIED
Louis, Jeromejerome.louis (at) telespazio.comUNSPECIFIED
Date:August 2016
Journal or Publication Title:Proceedings of ‘Living Planet Symposium 2016’
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-6
Publisher:Spacebooks Online
Series Name:ESA Special Publications (on CD)
Keywords:Product evolution and quality, Atmospheric Correction, Classification
Event Title:Living Planet Symposium 2016
Event Location:Prague, Czech Republic
Event Type:international Conference
Event Dates:09 - 13 May 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Berlin-Adlershof
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited On:16 Feb 2016 16:25
Last Modified:31 Jul 2019 20:00

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