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Initial Validation of Sentinel-2 Collection-1 L2A-Products

Pflug, Bringfried and Pertiwi, Avi Putri and Louis, Jerome and Pignatale, Francesco Cristiano and de los Reyes, Raquel and Enache, Silvia and Poustomis, Florian and Amaaouch, Sonia and Iannone, Rosario Quirino and Boccia, Valentina and Gascon, Ferran (2023) Initial Validation of Sentinel-2 Collection-1 L2A-Products. 42nd EARSeL Symposium, 2023-07-03 - 2023-07-06, Bucharest, Romania.

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Abstract

The Copernicus Sentinel-2 mission provides data since the launch of the Sentinle-2A unit in 2015. With the launch of the Sentinel-2B in 2017 it is a constellation of two polar orbiting satellite units. Both Sentinel-2A and Sentinel-2B are equipped with an optical imaging sensor MSI (Multi-Spectral Instrument) which acquires high spatial resolution optical data products. The Sentinel-2 mission serves for observation of land-cover change and deriving biophysical variables related to agriculture and forestry, monitors coastal and inland waters and is useful for risk and disaster mapping. Atmospheric correction processor Sen2Cor was developed to remove the effect of the atmosphere from Sentinel-2 data. Sen2Cor is designed for mono-temporal processing of Sentinel-2 L1C data products providing Level-2A Bottom-of-Atmosphere (BOA) surface reflectance product together with Aerosol Optical Thickness (AOT), Integrated Water Vapour (WV) and Scene Classification (SCL) maps. Since June 2017, ESA uses Sen2Cor for systematic, operational Level-2A processing of Sentinel-2 acquisitions. Products are available on the Copernicus Open Access Hub. However, several evolutions of Sen2Cor and L2A-products since 2017 resulted in a quite inhomogeneous time series. Therefore, ESA started a reprocessing campaign of the complete Sentinel-2 data archive. The resulting Collection-1 of Sentinel data archive provides a real homogeneous time series based on the recent Sen2Cor processor version. The presentation provides initial validation results for AOT, WV and (BOA) surface reflectance retrieval together with quality assessment of cloud screening. Accuracy and uncertainty of AOT and WV retrieval is assessed with reference measurements from AERONET stations. BOA reflectance retrieval can be estimated on a limited number of reference data only from RadCalNet-sites and in-situ campaigns. Reference data for cloud screening are generated by manual labelling of test images.

Item URL in elib:https://elib.dlr.de/196026/
Document Type:Conference or Workshop Item (Speech)
Title:Initial Validation of Sentinel-2 Collection-1 L2A-Products
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Pflug, BringfriedUNSPECIFIEDhttps://orcid.org/0000-0002-4626-9393UNSPECIFIED
Pertiwi, Avi PutriUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Louis, JeromeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pignatale, Francesco CristianoTelespazio Germany GmbHUNSPECIFIEDUNSPECIFIED
de los Reyes, RaquelUNSPECIFIEDhttps://orcid.org/0000-0003-0485-9552UNSPECIFIED
Enache, SilviaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Poustomis, FlorianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Amaaouch, SoniaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Iannone, Rosario QuirinoRhea spaUNSPECIFIEDUNSPECIFIED
Boccia, ValentinaESA/ESRIN, Frascati, ItalienUNSPECIFIEDUNSPECIFIED
Gascon, FerranESA/ESRINUNSPECIFIEDUNSPECIFIED
Date:July 2023
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Sentinel-2, Collection-1, Level-2A, Validation
Event Title:42nd EARSeL Symposium
Event Location:Bucharest, Romania
Event Type:international Conference
Event Start Date:3 July 2023
Event End Date:6 July 2023
Organizer:EARSeL
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 , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: Pflug, Bringfried
Deposited On:18 Jul 2023 13:19
Last Modified:24 Apr 2024 20:56

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