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SST related activities at ESA

Craig Donlon
2019 Zenodo  
Why a Tandem Mission for Sentinel-3A and 3B?  ...  Duration 1.5 months (Handover to EUM FOS 28/11/18, Operations start: Alt: 12/18, Opt: 01/19) • S-3B is at the baseline position at ±140°to S-3A; • Validation and of the Sentinel-3B SRAL OLTC for the  ...  to X-band) measurements will be available from space in the 2020+ time frame MetOp-SG(B) has no channels <18.7GHz and spatial resolution does not satisfy Copernicus needs (50 km) 4.  ... 
doi:10.5281/zenodo.5042195 fatcat:hgg73b4pujgxbl3at4jofl6yle

SENTINEL-2 SURFACE REFLECTANCE PRODUCTS GENERATED BY CNES AND DLR: METHODS, VALIDATION AND APPLICATIONS

O. Hagolle, J. Colin, S. Coustance, P. Kettig, P. D'Angelo, S. Auer, G. Doxani, C. Desjardins
2021 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The article also provides validation results for Level-2A and Level-3A products, resulting from comparison with in-situ data and with other methods.  ...  Theia's and EOC products include an instantaneous surface reflectance product (Level-2A), and a monthly cloud free synthesis of surface reflectance (Level-3A).  ...  These two sites have been set-up to validate the absolute calibration of optical sensors, and they were chosen to minimize all error sources.  ... 
doi:10.5194/isprs-annals-v-1-2021-9-2021 fatcat:ol7s6vwdtbew3bepma7xvqykam

Managing Flood Hazard in a Complex Cross-Border Region Using Sentinel-1 SAR and Sentinel-2 Optical Data: A Case Study from Prut River Basin (NE Romania)

Cătălin I. Cîmpianu, Alin Mihu-Pintilie, Cristian C. Stoleriu, Andrei Urzică, Elena Huţanu
2021 Remote Sensing  
Using open-source SAR Sentinel-1 and Sentinel-2 data characterized by an improved temporal resolution, we managed to capture the maximum spatial extent of a flood event that took place in the aforementioned  ...  river sector (middle Prut River course) during the 24th and 27th of June 2020.  ...  Acknowledgments: The authors would like to express their gratitude to the employees of the Prut-  ... 
doi:10.3390/rs13234934 fatcat:zqmgkm2denhvrfaqwcl4g654n4

Rapid flood and damage mapping using synthetic aperture radar in response to Typhoon Hagibis, Japan

Cheryl W J Tay, Sang-Ho Yun, Shi Tong Chin, Alok Bhardwaj, Jungkyo Jung, Emma M Hill
2020 Scientific Data  
The maps are also largely in agreement with various validation sources including aerial imagery, optical imagery and news sources.  ...  The maps have large spatial coverage over the Tokyo, Fukushima, Ibaraki, Iwate, and Nagano prefectures of Japan.  ...  We acknowledge the European Union Copernicus and European Space Agency for timely tasking and processing Sentinel-1 data, and Amazon Web Services for their provision of the Public Dataset Program to enable  ... 
doi:10.1038/s41597-020-0443-5 pmid:32214103 pmcid:PMC7096419 fatcat:i5me3bc3mfcujnpyq54mhndjti

An era of Sentinels in flood management: Potential of Sentinel-1, -2, and -3 satellites for effective flood management

Sai Kiran Kuntla
2021 Open Geosciences  
In this article, the technical specifications and operations of the microwave synthetic aperture radar (SAR) onboard Sentinel-1, optical sensors onboard Sentinel-2 (Multispectral Instrument) and Sentinel  ...  The earth observatory satellites of the European Space Agency's Sentinel series, Sentinel-1, Sentinel-2, and Sentinel-3, have a great potential to combat these disastrous floods by their peerless surveillance  ...  Acknowledgements: The author highly appreciates the European Commission and European Space Agency (ESA) for initiating the ambitious Earth observation programme "Copernicus".  ... 
doi:10.1515/geo-2020-0325 fatcat:p5zeslke3fctpavndfx3r2mb7m

Front Matter: Volume 11852

Zoran Sodnik, Bruno Cugny, Nikos Karafolas
2021 International Conference on Space Optics — ICSO 2020  
11852 2X Alignment turning and assembly of the Sentinel 4 optical modules [11852-103] 11852 2Y Full scale active telescope engineering model [11852-104] 11852 2Z EUCLID's very large telescope  ...  A stray light correction analysis framework for the calibration of Sentinel-4/UVN [11852-111] Coherent detection of the light backscattered by an optical surface [11852-144] 11852 42 LISA optical  ...  11852 50 Methodology for the analysis of a thermo-mechanically deformed optical system 11852 51 Demonstrating the sub-nanometer sensitivity of a pyramid WaveFrontSensor for active space telescopes  ... 
doi:10.1117/12.2601252 fatcat:ji2l2jxlgbgjdducf4syex53je

Use of the Sentinel-2 and Landsat-8 Satellites for Water Quality Monitoring: An Early Warning Tool in the Mar Menor Coastal Lagoon

Isabel Caballero, Mar Roca, Juan Santos-Echeandía, Patricia Bernárdez, Gabriel Navarro
2022 Remote Sensing  
The validation of satellite biogeochemical variables against on-site measurements indicates precise results of the water quality algorithms with median errors of 0.41 mg/m3 and 2.04 FNU for chlorophyll-a  ...  In this study, the Landsat-8 and Sentinel-2 satellites are jointly used to examine the evolution of the main water quality descriptors during the latest ecological crisis in 2021, resulting in an important  ...  distributing Sentinel-2 and Landsat-8 imagery.  ... 
doi:10.3390/rs14122744 fatcat:yd7s2lmu35euzdfsf6cojtbkw4

Predicting Forest Cover in Distinct Ecosystems: The Potential of Multi-Source Sentinel-1 and -2 Data Fusion

Kai Heckel, Marcel Urban, Patrick Schratz, Miguel D. Mahecha, Christiane Schmullius
2020 Remote Sensing  
Sentinel-2 short-wave infrared (SWIR) channels, biophysical parameters (Leaf Area Index (LAI), and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR)) and the lower spectrum of the Sentinel  ...  The fusion of microwave and optical data sets is expected to provide great potential for the derivation of forest cover around the globe.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12020302 fatcat:aafi7oluufbu7l3p4xjdteertm

Current and near-term advances in Earth observation for ecological applications

Susan L. Ustin, Elizabeth M. Middleton
2021 Ecological Processes  
We also include a few spaceborne active LiDAR and radar imagers designed for quantifying surface topography, changes in surface structure, and 3-dimensional canopy properties such as height, area, vertical  ...  estimates of water and carbon budgets.  ...  Acknowledgements Thanks to all the space agencies and their governments for making satellite data widely available through their "free and open" data policies.  ... 
doi:10.1186/s13717-020-00255-4 pmid:33425642 pmcid:PMC7779249 fatcat:tojcb7xw3reajgwgci46zsuqk4

Satellite Ocean Colour: Current Status and Future Perspective

Steve Groom, Shubha Sathyendranath, Yai Ban, Stewart Bernard, Robert Brewin, Vanda Brotas, Carsten Brockmann, Prakash Chauhan, Jong-kuk Choi, Andrei Chuprin, Stefano Ciavatta, Paolo Cipollini (+18 others)
2019 Frontiers in Marine Science  
Current capacity building and training activities pertinent to ocean colour are described and finally a summary of future perspectives is provided.  ...  Example applications of the ocean-colour data are presented, focusing on the climate data record and operational applications including water quality and assimilation into numerical models.  ...  AUTHOR CONTRIBUTIONS All authors listed have made a substantial, direct and intellectual contribution to the work, and approved it for publication.  ... 
doi:10.3389/fmars.2019.00485 fatcat:ntlwflpnszaank3vtgasyracje

Evaluation of the First Year of Operational Sentinel-2A Data for Retrieval of Suspended Solids in Medium- to High-Turbidity Waters

Isabel Caballero, François Steinmetz, Gabriel Navarro
2018 Remote Sensing  
An existing semi-analytical algorithm is calibrated by means of a cross-validation procedure based on both red 664 nm (r = 0.8, NRMSE of 25.06%) and near-infrared (NIR) 865 nm (r = 0.98, NRMSE of 10.28%  ...  These findings encourage further research of water quality studies relying on both operational Sentinel-2A and Sentinel-2B, with great implications to improve the understanding of turbid coastal and inland  ...  Acknowledgments: We would like to thank the ESA and the Copernicus programme for distributing the Sentinel-2 data used in this study.  ... 
doi:10.3390/rs10070982 fatcat:j3ueaehkt5h6nhmbljnlif7b7e

Automatic Open Water Flood Detection from Sentinel-1 Multi-Temporal Imagery

Ivana Hlaváčová, Michal Kačmařík, Milan Lazecký, Juraj Struhár, Petr Rapant
2021 Water  
A significant challenge in this area was the launch of Sentinel-1 providing free-of-charge data with adequate spatial resolution and relatively high revisit time.  ...  It is based on a combination of algorithms for multi-temporal change detection and histogram thresholding open-water detection.  ...  in Figure 3a .  ... 
doi:10.3390/w13233392 fatcat:2jhm75tmfrdxtae4hos22du7kq

Use of Sentinel-2 Derived Vegetation Indices for Estimating fPAR in Olive Groves

Luisa Leolini, Marco Moriondo, Riccardo Rossi, Edoardo Bellini, Lorenzo Brilli, Álvaro López-Bernal, Joao A. Santos, Helder Fraga, Marco Bindi, Camilla Dibari, Sergi Costafreda-Aumedes
2022 Agronomy  
The models, describing the relationship between rescaled VIs and observed fraction of Photosynthetically Active Radiation (fPAR), were fitted and then validated against independent datasets.  ...  While in the calibration phase, a greater robustness at predicting fPAR was obtained using NDVI (r = 0.96 and RRMSE = 9.86), the validation results demonstrating that GEMI and MCARI2/OSAVI provided the  ...  Sentinel-2 images (2A product-surface reflectance) at a pixel resolution of 10 m were downloaded from the official Copernicus Open Access Hub (https://scihub.copernicus.eu; accessed on 12 January 2022)  ... 
doi:10.3390/agronomy12071540 fatcat:qraqpeo42fal7hodmzzdbiuxbq

AgroShadow: A New Sentinel-2 Cloud Shadow Detection Tool for Precision Agriculture

Ramona Magno, Leandro Rocchi, Riccardo Dainelli, Alessandro Matese, Salvatore Filippo Di Gennaro, Chi-Farn Chen, Nguyen-Thanh Son, Piero Toscano
2021 Remote Sensing  
AgroShadow was tested and compared against Sen2Cor and MAJA in 33 Sentinel 2A-B scenes, covering the whole of 2020 and in 18 different scenarios of the whole Italian country at farming scale.  ...  Remote sensing for precision agriculture has been strongly fostered by the launches of the European Space Agency Sentinel-2 optical imaging constellation, enabling both academic and private services for  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13061219 fatcat:gjnskwfknngb5mlsve4rbrfyyu

Front Matter: Volume 11180

Nikos Karafolas, Zoran Sodnik, Bruno Cugny
2019 International Conference on Space Optics — ICSO 2018  
instrument onboard EnMAP: overview and current status ACTIVE/DEPLOYABLE OPTICS 08 Active optics for next generation of space observation instruments 11180 09 A novel deployable telescope to facilitate  ...  and optical performance of silicon immersed gratings for Sentinel-5 [11180-56] 11180 1M UV Ruled Grating for the Mars atmosphere and Volatile EvolutioN (MAVEN) mission [11180-57] TELESCOPE INTEGRATION  ...  and Out-of-field stray light analysis for the COPERNICUS Sentinel 4 instrument [11180-97] 11180 2R Evaluation of straylight characteristics of the Sentinel-5 NIR spectrometer optics [11180-98] 11180  ... 
doi:10.1117/12.2541613 fatcat:gfmzdmofg5hslnzpbrhh425l7q
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