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A Holistic Perspective on the Calibration and Validation of Sentinel-2 L2A products: Contribution From the CCVS Project

Alhammoud, Bahjat and Bourg, Ludovic and Clerc, Sebastien and Holzwarth, Stefanie and Lanconelli, Christian and Lerebourg, Christophe and Ligi, Martin and Meygret, Aimé and Pflug, Bringfried (2021) A Holistic Perspective on the Calibration and Validation of Sentinel-2 L2A products: Contribution From the CCVS Project. 4th Sentinel-2 Validation Team Meeting, 15. - 17. März 2021, virtual event.

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In this presentation, we report on the preliminary findings of the H2020 project “Copernicus Cal/Val Solution” (CCVS), whose objective is to define a holistic solution to the cal/val of the Copernicus Sentinel missions. We focus more specifically on synergies of the Sentinel-2 mission with other Sentinel or third-party missions, in terms of cal/val requirements as well as reference data sources. Regarding the first aspect, CCVS will consolidate cal/val requirements for all missions with a unified approach. For instance, we compare validation requirements for Sentinel-2 L2A AOD and Water Vapour products to other optical missions like Sentinel-3 OLCI and SLSTR, as well as atmospheric composition missions. In addition, user-driven inter-operability requirements could lead to specific calibration or validation needs. A first example concerns the radiometric inter-calibration between Sentinel-2A and B, which could be ensured with better accuracy than the absolute calibration of either satellites. Geometric co-registration with other optical missions like Landsat could be also monitored. In terms of data sources, CCVS will first establish a survey of existing sources, including natural targets and in-situ data acquired in the frame of systematic measurement programs or ad-hoc campaigns. In a second step, we investigate potential data sources needed for calibration and validation, with a specific focus on directional surface reflectance and cloud mask.

Item URL in elib:https://elib.dlr.de/145370/
Document Type:Conference or Workshop Item (Speech)
Title:A Holistic Perspective on the Calibration and Validation of Sentinel-2 L2A products: Contribution From the CCVS Project
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Alhammoud, Bahjatbalhammoud (at) argans.co.ukUNSPECIFIED
Bourg, Ludovicludovic.bourg (at) acri-st.frUNSPECIFIED
Clerc, SebastienSebastien.clerc (at) acri-st.frUNSPECIFIED
Holzwarth, StefanieStefanie.Holzwarth (at) dlr.dehttps://orcid.org/0000-0001-7364-7006
Lanconelli, Christianchristian.lanconelli (at) ec.europa.euUNSPECIFIED
Lerebourg, Christophechristophe.lerebourg (at) acri-st.frUNSPECIFIED
Ligi, MartinUniversity of TartuUNSPECIFIED
Meygret, AiméCentre National d’Etudes Spatiales (CNES)UNSPECIFIED
Pflug, BringfriedBringfried.Pflug (at) dlr.dehttps://orcid.org/0000-0002-4626-9393
Date:March 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Copernicus, Calibration, Validation
Event Title:4th Sentinel-2 Validation Team Meeting
Event Location:virtual event
Event Type:international Conference
Event Dates:15. - 17. März 2021
Organizer:European Space Agency
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing
Location: Berlin-Adlershof
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
German Remote Sensing Data Center > Land Surface Dynamics
Deposited By: Pflug, Bringfried
Deposited On:12 Nov 2021 09:37
Last Modified:12 Nov 2021 09:37

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