Sentinel atmospheric correction

We are pleased to announce the integration of Landsat 8 and Copernicus Sentinel-2 data into our data pipeline and software platform. Nima Pahlevan, Science Systems and Applications, Inc. A model based on MODIS PSF is built to deal with the scale differences between MODIS and Sentinel 2 / Landsat 8. Currently, a terrain as well as a cirrus correction are done in Sen2Cor. Suspended particulate matter (SPM) is regarded as an energy source and a water quality indicator in coastal and marine ecosystems. Image correction for atmospheric effects (iCOR) is an atmospheric correction tool that can process satellite data collected over coastal, inland or transitional waters and land. , "On the inflight absolute calibration of high spatial resolution spaceborne sensors using small ground targets", Int. Variation of optical thickness due to absorption and scattering What are your goals? Single atmospheric correction for one granule or something similarly small? I would recommend using sen2cor within ESA’s SNAP Sentinel-2 Toolkit. The same atmospheric correction algorithm is applied to both sensors data — Land Surface Reflectance Code (LaSRC), developed by Eric Vermote (NASA/GSFC) (Vermote et al. Near-realtime (NRT) processing capability. Data management of Landsat and Sentinel-2 Level 1 data + Download of Sentinel-2 data. uk. Sen2Cor for Atmospheric Correction; Sen2Three level-3 processor for Spatio-Temporal Synthesis of bottom of atmosphere corrected Sentinel-2 level 2a images; L2B biophysical processor (LAI, fAPAR, …) from this ATBD The Atmospheric Correction Module provides two atmospheric correction modeling tools for retrieving spectral reflectance from multispectral and hyperspectral radiance images: QUick Atmospheric Correction (QUAC®) and Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes (FLAASH®). Alexei Lyapustin, NASA GSFC: Advanced atmospheric correction of Landsat 8/Sentinel 2 data using algorithm MAIAC. This section provides a summary of project rationale, an When combined, Landsat and ESA Sentinel-2 observations can provide 2-4 day coverage for the global land area. Bandwidth = 7. Only pairs of forward and backward A potential area for you to look (and cite if appropriate) is the atmospheric correction(s) that is done for remotely sensed ocean color data. This atmospheric correction method uses MODIS MCD43 BRDF product to get a coarse resolution simulation of earth surface. As well as monitoring SST the instrument will also monitor sea and land ice temperature, atmospheric aerosols and cloud properties and fires (both over land and for ocean gas flares). Sentinel-2 and Sentinel-3 Mission Overview and Status Sentinel-2 swath & coverage . 0 answers 196 The Sentinel-2A data were projected into the MODIS sinusoidal projection but first hadto be registered due to a misregistration issue evident in the overlapping orbits. ​Detailed description of the Sen2-Agri system. Remote Sensing 18:1099-1111 (1997). In terms of processing algorithms, SNAP provides tools specific to the Sentinel-2 mission : • An atmospheric correction module, Sen2Cor, is integrated into the toolbox, and provides scene classification, atmospheric correction, cirrus detection and correction. Top of Atmosphere correction converts Landsat imagery reflectance by removing variation due to solar irradiance. Keeping an 'eye' on our European waters Sentinel-1. The package includes a dual-frequency (Ku and C band) 290 km swath with 13 spectral channels incorporating four visible and near-infrared bands at 10 m resolution, six red-edge/shortwave-infrared bands at 20 m and three atmospheric correction bands at 60 m correction is applied, and the full spatial resolution (i. He explained in detail the processing chain, quality control and correction schemes to derive the surface directional reflectance. Authors: Sola, Ion; García-Martín, Alberto; Sandonís- Pozo,  22 Feb 2019 Application of Sentinel-2 MSI in Arctic Research: Evaluating the Performance of Atmospheric Correction Approaches Over Arctic Sea Ice. Simple image-wide atmospheric correction methods, such as the dark-object Atmospheric Correction. A sensor invariant Atmospheric Correction (SIAC) Feng Yin Department of Geography, UCL ucfafyi@ucl. ,, 1 Shandong University of Science and Technology, Qingdao, China; 2 Key Laboratory of Earth Observation and Geospatial Information Science of NASG, Chinese Academy of Surveying and Mapping, Beijing, China Jun 6, 2018 • An international group of scientists from NASA, the European Space Agency (ESA), and universities and research organizations across the globe is working together to find the best atmospheric correction techniques for Landsat 8 and the Copernicus Sentinel-2 satellite series in an effort called the Atmospheric Correction Inter-comparison eXercise, or ACIX. is a prototype processor for Sentinel-2 Level 2A product generation and formatting; performs the tasks of atmospheric-, terrain and cirrus correction of Top-Of- Atmosphere Level 1C input data; creates Bottom-Of-Atmosphere, optionally terrain- and cirrus corrected reflectance images; additional, Aerosol Optical Thickness-, Water Vapor-, Scene The S2 Toolbox category regroups all threads about the Sentinel-2 Toolbox as Sentinel-2 product readers and product manipulation, Sentinel-2 processors as L2A processor for atmospheric correction, L3 processor for temporal synthesis, etc. 3. The full Copernicus program, which consists of several different Sentinel missions, is the most comprehensive systematic Earth Observation program ever created, providing land, ocean, and atmosphere observations, with continuity out to 2030. Accurate registration of optical satellite imagery with elevation models for topographic correction (Shepherd, James D, Dymond, John R, Gillingham, Sam and Bunting, Peter), In Remote Sensing Letters, volume 5, 2014. Due to a nature of NFS in relation to our large repository, this kind of problems may appear from time to time if the connection to NFS server is lost for whatever reason. 20-15. J. : Landsat-Sentinel-2 constellation for monitoring aquatic systems across the United States • Atmospheric correction using exogeneous data (METEO, MNT, …) and aerosol optical thickness. knowledge on atmospheric composition derived from CAMS, as well as expectation of spatial smoothness. MUSCATE : Operational Production Atmospheric Corrections and Monthly Composites Sentinel-2 Olivier Hagolle2, Marc Leroy1, Mireille Huc2, Mohamed Kadiri2, Gérard Dedieu2, Joëlle Donadieu 1, Philippe Pacholczyk , Céline L'Helguen , Béatrice Petrucci1, Selma Cherchali1 1 CNES, Toulouse 2 CESBIO, Toulouse What are your goals? Single atmospheric correction for one granule or something similarly small? I would recommend using sen2cor within ESA’s SNAP Sentinel-2 Toolkit. This parameter is then included in the VGK product, This project aims to develop and validate an atmospheric corrections scheme to produce high quality surface reflectance from Sentinel-2 data for coastal waters. The method for time series doesn't work, and I posted it on author's github. The angle bands OAA, OZA, SAA and SZA are not currently included. It performs a very basic linear atmospheric correction, and applies a curve to the color components to enhance details in the dark areas, while preserving contrast in very bright snow-covered slopes. • Sen2Cor Exercise 2 – Sentinel-2 atmospheric correction and NDVI index. Li a, D. ac. It consists in: A set of independent processing modules – one for each type of product and an additional one dedicated to atmospheric correction. Dogliotti1,3, and Ana L. 75nm. Compared to the OLI vegetation bands, however, there are significant differences in RSR profiles between corresponding MSI and OLI in three visible bands (Blue, Green, Red) and NIR. This product is only available for Landsat 5 and Landsat 7 yet, but I know NASA is working on LANDSAT 8 atmospheric correction processor (Edit : LANDSAT 8 level 2A has been released in december 2014 ). SENTINEL DUAL is the high density version of the Sentinel Pro range of double-conversion on-line UPS. It will also provide accurate topography measurements over sea ice, ice sheets, rivers and lakes. Note that due to Instrument Calibration. SENTINEL DUAL is designed to power critical loads such as servers, storage systems, telephone equipment, medical systems and industrial applications. You can select a specific zone with which to load the image bands. -W. 2006 ). Adjacency effect correction. The Sen2Cor processor is a third party plugin designed for for Sentinel-2 Level 2A product generation and formatting. atmospheric contribution to the TOA reflectance [44,45]. Resolution = 300m/px. The launch of Sentinel-2B is planned for mid-2016 [2]. Geoprocessing>Imagery>Landsat>Top Of Atmosphere Reflectance. The adjustments are based on sun elevation, acquisition date, and sensor properties (gain/bias settings for each band). Citation De Keukelaere L, Sterckx S, Adriaensen S, Knaeps E, Reusen I, Giardino C, Bresciani M, Hunter P, Neil C, Van der Zande D & Vaiciute D (2018) Atmospheric correction of Landsat-8/OLI and Sentinel-2/MSI data using iCOR algorithm: validation for coastal and inland waters. Enter the bands you wish to correct. Select an input file and perform optional spatial and spectral subsetting, then click OK. ACOLITE is a processor for Landsat (5/7/8) and Sentinel-2 (A/B) imagery developed ACOLITE performs the atmospheric correction by default using the " dark  EO Browser combines a complete archive of Sentinel-1, Sentinel-2, Sentinel-3 After releasing iCOR for the atmospheric correction of Sentinel-2 and Landsat-8  12 Nov 2018 Sen2Cor is a processor for Sentinel-2 Level 2A product generation and formatting; it performs the atmospheric-, terrain and cirrus correction of  Assessment of atmospheric correction methods for Sentinel-2 images in Mediterranean landscapes. It is designed to retrieve the spectral distribution of upwelling radiance just above the sea surface (the water-leaving radiance). We will talk about that in another post. Richter, R. sentinel. A Python-Based Open Source System for Geographic Object-Based Image Analysis (GEOBIA) Utilizing Raster Attribute Tables (Clewley, Daniel, Bunting, Peter, Shepherd filters for the suppression of atmospheric disturbances • Power factor correction: UPS input power factor close to 1 and sinusoidal current uptake. It further provides context regarding the rationale for ARD and wider international activities relating to ARD. 0) Imports lmodel2, mgcv Description Processing of Landsat or other multispectral The Sen2Cor processor is a third party plugin designed for for Sentinel-2 Level 2A product generation and formatting. The Sentinel-2 mission provides unprecedented multi-spectral observations with a five-day revisit at the equator, a spatial resolution of up to 10 meters and systematic global coverage of the Earth’s land surface. The Aerosol Optical Thickness (AOT) and Water Vapour (WV) are also examined in ACIX as additional outputs of AC processing. TOA Refl = Surface Refl + Atmospheric Refl Find regions of the scene which have ‘no’ surface reflectance. In this contribution, we demonstrate the SIAC approach with data from Sentinel-2 and Landsat-8. Powerful Sentinel-2 imaging features wide-swath (290 km), multi-spectral (13 spectral bands), high-resolution (4 visible and near-infrared bands at 10 m, 6 red-edge/shortwave-infrared bands at 20 m, and 3 atmospheric correction bands at 60 m), and high revisit frequency (5 days at the Equator once the twin satellite is to be lunched and operational in 2016/2017) . Its mission is to observe the water cycle. Our processor therefore requires at least a couple of images to get a good initialization, . xml” file and use „Import Product”. If you then divide the values by the quantification value (10000) you'll end up with BOA reflectance data. Ruddick2, Ana I. , Atmospheric correction for Landsat and Sentinel-2 product over water surfaces 1. 0), rgdal, sp (>= 1. Bands at 60 meter are dedicated mainly to atmospheric corrections and cirrus-cloud screening. The product is intended for users requiring both the full spatial resolution of Sentinel-2 and the same LaSRC atmospheric correction approach used operationally for Landsat 8/OLI. Sen2Cor is a processor for Sentinel-2 Level 2A product generation and formatting. 2 Carsten Brockmann (Brockmann Consult) presented the atmospheric correction over land of the satellite Sentinel-2 data of the European Copernicus programme. The top of atmosphere reflectance data were corrected to surface reflectance using the SEN2COR atmospheric correction software. • Sentinel-2 will provide continuity of data for services initiated within the GSE (GMES Service Element) projects. e. The difficulty in using any atmospheric correction model lies in providing the necessary information on aerosol properties. The thermal data are expressed as brightness temperatures at the top of atmosphere. gov> Depends R (>= 2. Factors will include feature relevancy, the impact of atmospheric correction, the selected minimal mapping unit, seasonal changes, the incompleteness of training data, image mosaicking, and multi-temporal S2 data. • Higher spectral resolution than all previous sensors: Important for atmospheric correction, complex coastal waters, phytoplankton types • Consistency with MERIS: facilitates merging (no need to do band-shifting to establish inter-sensor biases) Richter, R. Surface Refl = TOA Refl –Dark Obj Refl Image correction for atmospheric effects (iCOR) is an atmospheric correction tool that can process satellite data collected over coastal, inland or transitional waters and land. The parameters are retrieved with full uncertainty, and are then use for correcting the TOA reflectance. Models (NWM) have been used to reduce atmospheric effects on InSAR measurements, but GPS-based correction models are limited by the availability (and distribution) of GPS stations, and for NWM-based correction models, there might be a time difference between NWM and radar observations. As of today, researchers, developers, and commercial users can access four unique satellite imagery datasets through the Planet Platform: Landsat 8 tiles populate the In the field of “Sentinel-2 Atmospheric Correction Algorithm Setup and Centre National d'Etudes Spatiales PSC-NT-411-0362-CNES MUSCATE Issue : atmospheric correction over turbid coastal and inland waters. From the Toolbox, select Radiometric Correction > Thermal Atmospheric Correction. Sentinel-2 L1B, L1C, L2A and L3, Landsat-8, Spot 1 to Spot 7, Spot4 Take5, Spot5 Take5, RapidEye, Deimos; Processors. , watervapor bands at 725 and 825 nm, oxygen A-band at 763 nm), may be difficult due to the coupling between scattering and Validation of Landsat-8 and Sentinel-2 algorithms for atmospheric correction on Lake Geneva Dupuis, Sonia ; Wüest, Alfred Johny Remote-sensing of water surfaces such as large lakes is a useful tool for monitoring and understanding large-scale processes. The top-of-atmosphere reflectance has to be transformed into surface reflectance. Since reflectance is a ratio, raw reflectance values can vary from 0 to 1. Atmospheric correction in spectral regions of strong gaseous absorption-Accurately correcting for gaseous transmittance in strongly absorbing spectral regions (e. Abstract: The Atmospheric Correction Inter-comparison eXercise (ACIX) is an international initiative with the aim to analyse the Surface Reflectance (SR) products of various state-of-the-art atmospheric correction (AC) processors. ACIX is an international collaborative initiative to inter-compare a set of atmospheric correction (AC) processors for high-spatial resolution optical sensors. Contribute to alekfal/Thesis development by creating an account on GitHub. Li 1,2, G. This plugin performs an atmospheric Figure: A true color composite (bands 4-3-2) of Sentinel-2B image with top-of-atmosphere (TOA) reflectance (left) and surface reflectance after atmospheric correction (right) with Land Surface Reflectance Code (LaSRC). The method for single image works and you can use it for multiple ones. This research also Sentinel-2 is an ESA land monitoring mission with two identical satellites that provide high resolution optical imagery. The final part of the project will be to make recommendations based on the research for future S2 based GLC products. X. It may include also environment correction. It implements 6-factor corrections as efficiently as any other process. Six atmospheric correction algorithms were tested with Sentinel-2A MSI data. These Level 2A contain directional surface reflectances in 10 spectral bands (i. Sentinel-3 Instruments Image: ESA. How to carry out atmospheric correction on Sentinel-2 data from AWS Updated March 08, 2017 05:22 AM. The Sentinel-3 OLCI instrument is based on the optomechanical and imaging design of ENVISAT's MERIS. Consequently, atmospheric correction of the data was undertaken as both the atmosphere and the surface changes between the Sentinel-2A acquisition dates. 3 THE LOOK-UP-TABLE: 6 radiative transfer functions are calculated for different atmospheric conditions, view angles 0° (nadir) and 10° off-nadir, and a range of solar geometries and relative azimuth angles: where: Edif is the diffuse solar flux at the ground, • Atmospheric correction has been performed succesfully – Atmospheric correction resulted in high correlation between ground reflectances and AHS reflectances. Purpose = For improved fluorescence retrieval and to better account for smile together with the bands 665 and 680 nm. The images are very powerful and are of great relevance for land and water management because analyses USGS now delivers atmospherically corrected LANDSAT data. iCOR derives aerosol optical thickness from the image and allows for adjacency correction, which is SIMilarity Environmental Correction (SIMEC) over water. Register Login. Sentinel-3. g. The potential burst discontinu-ities caused by miss-registration along azimuth were handled during the atmospheric correction step instead of directly applying enhanced spectral diversity (ESD) after geometric Jun 6, 2018 • An international group of scientists from NASA, the European Space Agency (ESA), and universities and research organizations across the globe is working together to find the best atmospheric correction techniques for Landsat 8 and the Copernicus Sentinel-2 satellite series in an effort called the Atmospheric Correction Inter-comparison eXercise, or ACIX. Jupp b, S. The exercise will focus on Landsat-8 and Sentinel-2 imagery over a set of test areas. The building blocks of the software solution for the modules rely on the Orfeo Toolbox (OTB), a high-resolution image processing toolbox, open source, the iCOR atmospheric correction algorithm, available through the ESA Sentinel Application Platform (SNAP), to the Sentinel-2 image. It consists of two identical satellites, Sentinel-2A and Sentinel-2B. The image is acquired on November 17, 2017 over tile 18SUJ in USA. The process determines the optical characteristics of the atmosphere and then applies it in order to correct the atmospheric effects on satellite images. Li et al. In this study, three methods are compared, two physical-based (6S, FLAASH) and one image-based (DOS) for their effectiveness on atmospheric correction of Sentinel-2 high resolution optical imagery. inter-compare a set of atmospheric correction (AC) processors, led jointly by ESA and NASA. Sentinel-3 OLCI Marine User Handbook This Document is Public Page 9 of 41 1. Assumption: The very darkest objects in the scene can be assumed to have ‘no’ surface reflectance. Integrated atmospheric and topographic correction: one algorithm for all sensors. This tool written in Python language will help you automatically download LANDSAT data form the USGS earthexplorer web site. Important for atmospheric correction, complex coastal waters Sentinel-2 has become the gold standard for open satellite data. The tool is adaptable with minimal effort to hyper- or multi-spectral radiometric sensors. This software incorporates the plugin "Sen2Cor". Wang a and R. iCOR is a scene generic tool for atmospheric image correction. The MSI bands for coastal aerosols, cirrus and two SWIR domains follows Landsat OLI sensor for atmospheric correction (upper panel of Figure 1). Sentinel-2 data calibration and validationVirtual Special Issue Acknowledgement The editors of this special issue would like to sincerely thank ESA’s S2 present (Ferran Gascon) and previous (Bianca Hoersch) mission managers and their support team (Valentina Boccia, Enrico Cadau, Rosario Iannone), the S2QWG members, the European Journal of Remote Sensing (Patrizia Rossi, Marco Gianinetto) and all […] Our results indicated that SWIR atmospheric correction algorithm was the suitable algorithm for Landsat-8 OLI and SWIR. Operational Atmospheric Correction of MODIS Visible to Middle Land Surface Data in the case of an Infinite Lambertian Target , Earth Science Satellite Remote Sensing Book, Volume 1, Chapter 8, Geoscience Australia Report on Cal/Val Activities WGCV Plenary # 41 • Geoscience Australia participated in the 1st ACIX Workshop in June 2016 • GA-PABT module is a coupled atmospheric, BRDF and terrain illumination correction module • Based on primary inputs of Landsat data pre-processed by LPGS and Sentinel-2 SRAL (SAR Altimeter) is the main topographic instrument to provide accurate topography measurements over sea ice, ice sheets, rivers and lakes. not BRDF corrected), a scene classification layer (SCL) providing information on cloudiness, snow and other pixel classification Dr. This should not be a problem with ATMCOR but makes NDVI only partially corrected with DOS1, for example, In essence, VGT atmospheric correction is the same as SYN atmospheric correction described in Computation of Aersol Parameters. Just pull a list of image id's in earth engine, save it to a json file and write a for loop. iCOR is part of the Atmospheric Correction Inter-comparison eXercise (ACIX) organized by ESA and NASA. This is exciting news since the Sentinel 2 data compliments Landsat data accessible through ArcGIS Online. This looks to be a fairly fully featured image processing program, but what I was most interested in doing is the atmospheric correction for the Sentinel2 images I recently downloaded. Atmospheric correction for better surface reflectance information. Grass GIS provides 6S methods by using  When applying DOS1 atmospheric correction in QGIS, the bands are correctly rectified, however, when running a NDWI some large rivers (+300m wide) have  The Level-2A processing includes a scene classification and an atmospheric correction applied to Top-Of-Atmosphere (TOA) Level-1C orthoimage products. Advanced cloud and cloud shadow detection. Now that Sentinel-2A has started to acquire time series over Europe, we have been able to try our MACCS Level 2A processor to perform atmospheric corrections. LaSRC is based on the 6S radiative transfer model and a heritage from the MODIS MCD09 products ( Vermote and Kotchenova 2008 ) as well as the earlier LEDAPS algorithm implemented for Landsat-5 and Landsat-7 ( Masek et al. It performs the atmospheric, terrain and cirrus correction of Top-Of- Atmosphere Level 1C input data. Are the level 2A products topographically corrected? Performance of 4 atmospheric correction methods evaluated on Sentinel-2 images. Delgado4,5 Although satellite remote sensing techniques have been widely implemented for a variety of applications, using either single or time-series images, few studies have explicitly considered atmospheri Open Image from Sentinel 1 in SNAP problems. ACOLITE is a free software which performs atmospheric correction of Sentinel-2 images for coastal and inland-waters applications. Atmospheric correction for a Landsat and Sentinel-2 product over water surfaces F. It is possible to get a good estimation of bottom-of-the- atmosphere reflectance as opposed to top-of-the-atmosphere reflectance (which   Yes, the Semi-automatic Classification Plugin incorporates DOS1 atmospheric correction for Landsat, Sentinel or Aster. Atmospheric Correction for High -Resolution Satellites To develop AC algorithms for Sentinel-2, Landsat -8 taking TOA radiance data and auxiliary data as input and provide bottom of Input for the S2GM service are the official Sentinel-2 Level 2A (L2A) products, which have been corrected for atmospheric influences and thus provide Bottom of Atmosphere reflectance values. Hello! Just an update. SMAC be downloaded from the CESBIO site. Sentinel-2 is a constellation of two Earth observation satellites, developed under the direction of the European Space Agency, as part of the European Commission’s ambitious Copernicus Earth observation program. from the Royal Belgian Institue for Natural Sciences. So you’d be taking your Level-1C to a Level-2A product fairly swiftly. i. single atmospheric correction implementation for land and water, discontinuities in reflec-tance within one scene are reduced. The Thermal Atm Correction Parameters dialog appears. The instruments goal is to globally monitor atmospheric greenhouse gases, trace gases and provide aerosols and cloud information. Per-pixel geocoding is not being used in favor of the included less accurate tie point grids. (EO Browser screenshot) Attention In most cases you will get better results when activating the atmospheric correction in the EO Browser, especially for the highlighting functions of the script. Therefore, our objective is to present an inter-comparison of three atmospheric correction algorithms (6SV based on MAIAC atmospheric product, ACOLITE and Sen2Cor) applied to new a In the first step, MAJA corrects for absorption by atmospheric gas molecules, using the absorption part of the Simplified Model for Atmospheric Correction (SMAC) method and considering ozone, oxygen and water vapor concentrations obtained from either satellite data (ozone, water vapor) or meteorological data (pressure). The carbon monoxide total column density is derived from the backscatter sunlight in the short-wave infrared region. The atmospheric correction software, iCOR (previously known as OPERA), is now available to the broad user community through the ESA Sentinel Application Platform (SNAP) for the atmospheric correction of Sentinel-2 and Landsat-8 data. Features include the extraction of rectangular regions of interest (defined by bounding coordinates), calculation of reflectance derived parameters, and the generation of RGB images before and after atmospheric correction. Over land, the iCOR is able to retrieve the the aerosol optical thickness at 550nm (AOD) while over water the AOD is fixed to 0:1. Sentinel-3 - OTCI Resolution = 300m/px Purpose = Estimates of the Chlorophyll content in terrestrial vegetation, aims at monitoring vegetation condition and health. These filters can be used with any Sentinel imagery product, however if a filter will only affect bands for which it has data. , watervapor bands at 725 and 825 nm, oxygen A-band at 763 nm), may be difficult due to the coupling between scattering and Overall, NDVI is a standardized way to measure healthy vegetation. This report provides information about using the Atmospheric and Radiometric Correction of Satellite Imagery (ARCSI) software to produce Sentinel-2 Analysis Ready Data (ARD). The objective of this study is to develop, test, implement and validate methods (or combination of methods) for deriving atmospheric correction above coastal waters and over inland waters, to validate them according… There is a software called SNAP (Sentinel Application Platform) developed by ESA (European Space Agency). Those methods involve removing clouds, which is a way of dehazing, and often use machine learning to do so. EUFAR ESA Workshop on Atmospheric Correction of Remote Sensing Data By RUHTZ Thomas The workshop on atmospheric correction of remote sensing data took place at the Harnack House of the Max-Planck Society in Berlin-Dahlem from 26 Oct. Improving the Atmospheric Correction of OLCI over Turbid Waters by Using the SWIR band at 1016 nm and a new Baseline Residual Technique Juan I. It creates Bottom-Of-Atmosphere (BOA) reflectance images by performing an atmospheric correction of the Top-Of-Atmosphere (TOA) data employing ATCOR. The simplified model for atmospheric correction (SMAC), 6S model and Sen2cor method are used to carry out atmospheric correction for Sentinel-2 satellite  11 Feb 2016 I was about to write a post on preprocessing Sentinel 2 data using SNAP provide a detailed example about how to do atmospheric correction, . Results Atmospheric effects are removed through atmospheric correction (AC) [7], but residual errors in AC can introduce large uncertainties in Rrs estimates, resulting in erroneous retrieval of OC products such as apparent optical properties [8]. Gossn1, Kevin G. In order to process the vast amounts of data collected by Sentinel-2A/2B, users can use the Sentinel Toolbox . Sen2Cor creates Bottom-Of-Atmosphere, optionally terrain and cirrus corrected reflectance images; additional, Aerosol Optical Thickness, Water Vapor, Scene Classification Maps and Quality Indicators for cloud and snow probabilities. 0. The Sen2Cor [R1] processor algorithm is a combination of state-of-the-art techniques for performing atmospheric corrections which have been tailored to the Sentinel-2 environment together with a scene classification module described in [R2]. The main datasets used for the tutorial are some Landsat 5 scenes, these are smaller in file size and therefore quicker to download. It proceeds in two steps : (1) calculation of the ground reflectance of each pixel based on precomputed planetary albedo functions for different standard atmospheres, aerosol types and optical depths, or actual atmospheric measurement data (e. Sentinel 2A L1C製品TOA反射率からBOA反射率への換算 atmospheric-correction sentinel-2 reflectance 4,218 . , "Correction of atmospheric and topographic effects for high spatial resolution satellite imagery", Int. The Sentinel-3 topography package will bring a step change in satellite altimetry, measuring the height of the sea surface, waves and surface wind speed over the oceans. In open ocean waters, where phytoplankton governs the optical For mapping Earth surface movements at larger scale and smaller amplitudes, many new synthetic aperture radar instruments (Sentinel‐1A/B, Gaofen‐3, ALOS‐2) have been developed and launched from 2014–2017, and this trend is set to continue with Sentinel‐1C/D, Gaofen‐3B/C, RADARSAT Constellation planned for launch during 2018–2025. This particular guide is designed to be used with ArcGIS, atmospheric correction methods applied to new Sentinel 2 MSI image is required, which is still missing for Amazon lakes. The three atmospheric correction models tested were the ELM method, the Atmospheric Correction ATCOR (Ver. Dr. On opening the data set, depending on the program you use, you may be prompted to select the group of image channels that you want. After that, the two identical Sentinel-2 satellites (Sentinel-2A and Sentinel-2B) will provide an exceptional revisit capability of 5 days at the Well, this means that all Sentinel-2 images acquired after March 28 are now available for download with a quality cloud mask and an atmospheric correction directly on the ESA SCIHUB. 6 Aug 2018 Assessing the discrepancy in open-source atmospheric correction of Sentinel-2 acquisitions for a tropical mining area in New Caledonia. For optical data this can mean for example cloud removal and atmospheric correction and for some specifications it also means bringing multiple datasets to a common grid. Atmospheric correction is the process to retrieve the surface reflectance from remotely sensed imagery by removing the atmospheric effects (Scattering and Absorption). Sentinel-3 - Band B09. 2016). High battery reliability • Automatic and manual battery test • Batteries are user replaceable without switching off equipment and without interruption to the load (Hot Swap) SENTINEL DUAL is the high density version of the Sentinel Pro range of double-conversion on-line UPS. The inter-comparison of the derived Bottom-of-Atmosphere acolite It allows simple and fast processing for coastal and inland water applications. The processing parameters depend on the surface to be corrected. ATMOSPHERIC PHASE DELAY CORRECTION OF D-INSAR BASED ON SENTINEL-1A X. the will automatically create corrected bands. preproc is a module for the preprocessing of Sentinel-2 images (Level-1C Single Tile product) which wraps the import, the atmospheric and the topographic correction using respectively i. If you prefer to work with scaled Apparent Reflectance function. sentinel-2 mission performance centre / 1 mission performance centre sentinel-2 l2a processor sen2cor eufar esa workshop on atmospheric correction of remote sensing data 26 – 28 october 2016, berlin, germany Atmospheric correction (aerosol scattering) 2 2 458 490 522 65 10 Sensitive to vegetation senescing, carotenoid, browning, and soil background; atmospheric correction (aerosol scattering) 3 3 543 560 577 35 10 For Sentinel-1 and other SAR data, calibration and corresponding terrain correction would be an example of such a preprocessing chain. Exercise 2 –Sentinel-2 atmospheric correction and NDVI index (sen2cor, SNAP) 29 In SNAP navigate to:-> File-> Import-> Optical Sensors-> Sentinel-2-> S2-MSI-L2A Navigate to processed Sentinel-2 main data folder, select „MTD_MSIL2A. 2). It uses dual-frequency K u and C band and is supported by a microwave radiometer for atmospheric correction and a DORIS receiver for orbit positioning. Many of these algorithms are very robust and commonly used by satellite imaging communities. B. The original brightness values are adjusted to a common lighting condition by normalizing scenes captured under variable illumination conditions. 3. • Minor differences observed between the four methods (MAJA, SEN2COR, 6S, iCOR). For mapping Earth surface movements at larger scale and smaller amplitudes, many new synthetic aperture radar instruments (Sentinel‐1A/B, Gaofen‐3, ALOS‐2) have been developed and launched from 2014–2017, and this trend is set to continue with Sentinel‐1C/D, Gaofen‐3B/C, RADARSAT Constellation planned for launch during 2018–2025. MSI Sentinel-2 high spatial resolution imagery and data from Copernicus are served from CoastWatch for coastal US regions in near real time as the data become available. GCOM-W1 (Global Change Observation Mission – Water "Shizuku") is the first in the GCOM-W series. If you are looking for Bottom of atmosphere reflectance you will need to download 2A product or process them from a 1C using Sen2Cor in SNAP (or any other package that support atmospheric correction for Sentinel-2). This is great news! Finally we don’t have to process the images ourselves! Diploma Thesis. The entire process of radiometric correction involves three steps (Figure 3. Sentinel-3 will ultimately operate a constellation of two satellites to collect ocean and land color observation data, ocean and land temperature, surface topography data over land and ocean as well as data for use in vegetation assessments, ice monitoring, atmospheric studies, and fire detection. Results CESBIO is also involved in the cloud masking and atmospheric correction schemes used in the Venµs ground segment, in the Sentinel-2 simplified Level2 product processor and in the French Theia Land Data Center. Sentinel-2. L. It will establish a key European source of data for the GMES Land Fast Track Monitoring Services and will also contribute to the GMES Risk Fast Track Services. Atmospheric correction on Sentinel Hub With the integration of the L2A products Sentinel Hub now allows you to explore and download the satellite imagery with two types of atmospheric correction. Atmospheric correction. baseline subset (SBAS) [36] and atmospheric correction with common-point stacking [39] to calculate the deformation time series around CPGF. to 28 Oct. • Results suggest the suitability of the applied corrections. corr. The UPS is ideal for Blade servers with an input power factor close to Unity (1). goslee@ars. This process is called “atmospheric correction”. USGS now delivers atmospherically corrected LANDSAT data. • ASD Band 18 & 21 were corrected insufficiently • Implementation of S-2 sensor characteristics has been performed succesfully. This paper describes the development, the implementation and the automation of a physically-based atmospheric correction method for ESA’s high resolution mission Sentinel-2, by exploiting atmospheric products of the Sentinel-3 synergy. Sentinel images have a swath width of 290 km and a spatial resolution of 10 m (four visible and near-infrared bands), 20 m (six red edge and shortwave infrared bands) and 60 m (three atmospheric correction bands) (Satellite Imaging Coorporation). The present paper describes in detail the state of the art techniques that will be used for atmospheric correction of MODIS bands 1 through 7, centered at 648, 858, 470, 555, 1240, 1640, and 2130 nm, respectively. Enter the Data Scale Factor needed to scale your data to units of W/m 2 /μm/sr. As the files downloaded from the sentinel scihub in SAFE format are huge (usually about 6GB) and really cumbersome to process in the SNAP toolbox, I've been downloading the bands I need from Amazon Web Services in JP2 format, then converting them to layer-stacked GeoTIFF images in QGIS. The version for Sentinel-2 and Landsat-8 was made available to the broad user community through the ESA Sentinel Application Platform (SNAP). When you have low NDVI, you have less or no vegetation. The iCOR atmospheric correction was already available for Landsat-8 OLI and Sentinel-2 MSI. One of the highlights of the Sen2cor plugin which allows users to correct for atmospheric effects and classify images. The default raster data type for reflectance rasters is therefore 32-bit floating-point. 6 List of Abbreviations, Acronyms and Symbols AAC Alternative Atmospheric Correction AC Atmospheric Correction ADC Analogue to digital converter ATBD Algorithm Theoretical Basis Document BAC Baseline Atmospheric Correction BPAC Bright Pixel Correction sentinel-2. up vote 5 down vote. usda. atmospheric CO 2 Evaluation of model outputs and process parameterization Improvement EarthCARE/CPR 3D structure of cloud and aerosol Aerosol radiative forcing change Cloud GCOM-C Global/horizontal distribution of cloud and aerosol Monitoring and process investigation about cloud and aerosol by GCOM-C & EarthCARE Today’s the most significant Agency’s (ESA) Sentinel-5 Precursor satellite platform was launched in August 2017. import, i. The level 1C is already in Top Of Atmosphere (TOA) reflectance. This will give you atmospherically corrected BOA data. This tutorial applies Image-Based Atmospheric Correction to convert Sentinel-2 imagery to surface reflectance (SR), which is essentially a process of establishing and deducting atmospheric scatter reflectance from Top of Atmosphere reflectance. • Correction of lightening variations due to relief using MNT and considering a bidirectional reflectance distribution function. Kong 1 1 Shandong University of Science and Technology, Qingdao, China Atmospheric Correction. Find these regions and remove the reflectance of these pixels from the whole scene. Welcome to LANDSAT-Download pages. In this study, four methods are compared, three physically-based (6S, FLAASH, Sen2Cor) and one image-based (DOS) for their effectiveness on atmospheric correction of Sentinel-2 high resolution optical imagery. 28 Apr 2017 Exercise 1 – Sentinel-1 preprocessing and data fusion (SNAP). radiosonde), (2) approximate correction of the adjacency effect by taking into account the average reflectance in an N×N pixel neighbourhood and using appropriate weighting functions for the difference in reflectance. The Sentinel 3 EFR OLCI product has the following known issues. by Calvin Mccoy Last Updated March 08, 2017 05:22 AM - source. Sentinel-2 Surface Reflectance Tutorial. In general, while the output image data type is the same as the input image data type, Sentinel 2 imagery is of value in a range of applications including forestry, agriculture, land resource management and environmental monitoring. SRAL (SAR Altimeter) is the main topographic instrument to provide accurate topography measurements over sea ice, ice sheets, rivers and lakes. 15. Toggle navigation. Atmospheric correction. 5nm. Huang 1,2, and Q. Sea and Land Surface Temperature Radiometer (SLSTR) The design of SLSTR is improved from the previous AATSR instruments to include a wider swath of 1400 km in the nadir view and 740 km in the dual view. Atmospheric correction of optical satellite imagery is an essential pre-processing for modelling biophysical variables, multi-temporal analysis, and digital classification processes. The report consists of: PART 1: Sentinel-2 ARD project. 2016. 10 m, 20 m, and 60 m) of the individual MSI bands is preserved. – Radiances in all bands within limits atmospheric phase delay correction of d-insar based on sentinel-1a X. It was primarily included in CESBIO Multitemp blog , then moved here for a better convenience. Sentinel-2 Atmospheric correction I saw a previous answer, where you said it will be available in a future service pack. It is investigated to what extent atmospheric properties from Sentinel-3 atmospheric correction for Sentinel-2A images of Caribbean zones and, in this process, to identify some of the limitations and outline the requirements of suitable calibration targets. Surface Refl = TOA Refl –Dark Obj Refl o Atmospheric correction includes correction of molecular absorption, molecular scattering and aerosol effects o Largest uncertainties arise out of variability of aerosols o Validation of aerosol estimation is a main first step for validation of atmospheric correction . A collaboration among NASA GSFC, University of Maryland, and NASA Ames has developed a processing chain to create seamless, “harmonized” reflectance products using standardized atmospheric correction, BRDF They both carry a multispectral imager (MSI) covering 13 spectral bands (443–2190 nm) with a swath width of 290 km and spatial resolutions of 10 m (4 visible and near-infrared bands), 20 m (6 red-edge/shortwave-infrared bands) and 60 m (3 atmospheric correction bands). Two main categories of atmospheric correction methods can be identified, the ones that rely on radiative transfer modeling and the image-based ones. KEYWORDS: Atmospheric Correction, Sentinel-2, SEN2COR, libRadtran 2. NIR atmospheric correction algorithm outperformed MUMM algorithm for MODIS. • Temporal syntheses creation (actually for Venµs only). Simplified Landsat 8 & Sentinel-2 Conversion to Surface Reflectance Steps Image-based atmospheric correction is a well established method of calculating surface reflectance (SR) that ultimately deducts atmospheric scatter reflectance from Top of Atmosphere (TOA) reflectance to retrieve surface reflectance (SR), and should be credited to Chavez (1988 & 1996). The only difference is the auxiliary file used. How to carry out atmospheric correction on Sentinel-2 data from AWS. A Sentinel-2 image, acquired on a clear day over Heraklion, Greece was used. Toggle navigation AbstractWhile land-based high-frequency (HF) radars are the only instruments capable of resolving both the temporal and spatial variability of surface currents in the coastal ocean, recent high-res Tutorials ===== Introduction to ARCSI ----- The following tutorial provides an introduction to analysis ready data (ARD) and atmospheric correction using ARCSI. Sen2Cor is a Level-2A processor which main purpose is to correct single-date Sentinel-2 Level-1C Top-Of-Atmosphere (TOA) products from the effects of the atmosphere in order to deliver a Level-2A Bottom-Of-Atmosphere (BOA) reflectance product. The same atmospheric correction algorithm is applied to both sensors data — Land Surface Reflectance Code (LaSRC), developed by Eric Vermote  In this study, the Bottom-Of-Atmosphere (BOA) reflectance over Egbert, Ontario, Canada on September 24, 2016, as obtained by the Sentinel-2A Multi-Spectral. Sentinel-2A satellite is the first civil optical Earth observation mission of its kind to include three bands in the ‘red edge', which provide key information on the vegetation state. Central Wavelength = 673. Choose one of the atmospheric correction methods when not working with L2A scenes to get better results. INTRODUCTION Radiances received by satellites do not directly characterize the underlying reflectance of surface objects and are impacted by atmospheric properties, solar zenith, azimuth, sensor view angles as well as surface slope and surface aspect. Remote Sensing 18:2827-2833 (1997). The level-3 and level-4 processing modules are fully compatible with the Sentinel-2 Toolbox and can be integrated in the common Sentinels Application Platform (SNAP) through external tool adapters, thereby allowing their usage either independently or as a processing chain outside the Sen2-Agri system. 3 Votes 196 Views In this study, six publicly available atmospheric correction algorithms (Acolite, C2RCC, iCOR, l2gen, Polymer and Sen2Cor) are evaluated against above-water optical in situ measurements, within a robust methodology, in two optically diverse coastal regions (Baltic Sea, Western Channel) and from 13 inland waterbodies from 5 European countries with a range of optical properties. atmospheric correction Introduction to ARCSI for Generating Analysis Ready Data for Landsat and Sentinel-2 The following tutorial provides an introduction to analysis ready data (ARD) and atmospheric correction using ARCSI. Huang 1,2 , and Q. Generally, if you want to see vegetation change over time, then you will have to perform atmospheric correction. Sentinel-2 products available for users are distributed by the European Space Agency (ESA) as Top Of Atmosphere reflectance values in cartographic geometry (Level-1C product). Li 1,2 , G. Sentinel-2 is a wide-swath, high-resolution, multi-spectral imaging mission developed by ESA as part of the Copernicus Programme, supporting the Copernicus Land Monitoring services, including the monitoring of vegetation, soil and water cover, as well as the observation of inland waterways and coastal areas. In order to make a meaningful measure of radiance at the Earth’s surface , the atmospheric interferences must be removed from the data. 10 Sep 2016 The objective of atmospheric correction is to retrieve the surface reflectance Atmospheric Correction Methods for Sentinel-2 Satellite Imagery. Kong 1 X. iCOR is an atmospheric correction software which can be used to process a variety of airborne and satellite images. Sagar a, L. Generation of Analysis Ready Data (ARD). Atmospheric correction of Sentinel 2 images I recently downloaded the Sentinel Application Platform including the Sentinel 2 Toolbox . ATCOR3 includes all of the capabilities of ATCOR2 and can be integrated with a DEM for atmospheric correction of images depicting rugged terrain. Quality screening. Sentinel 2 Toolbox – L2B Biophysical Products Outputs : LAI : Leaf Area index FAPAR : fraction of photosynthetically active radiation absorbed by the green elements of the canopy CCC, the Canopy Chlorophyll Content used as a proxy of the nitrogen status of the plant CWC, the Canopy Water Content used also Sentinel 2 is an Earth observation mission developed by ESA as part of the Copernicus Programme to perform terrestrial observations in support of services such as forest monitoring, land cover changes detection, and natural disaster management. JPEG and TIF images as well as zipped Level 1C data are available. 8 Date 2012-10-19 Author Sarah Goslee Maintainer Sarah Goslee <sarah. Several models may be used to perform atmospheric corrections. Atmospheric Correction + Masks •AerosolAOT, water vapor, … •Terrain correction •Cloud & shadow masks Level1A Init_loc_Prod Level1C Sentinel-2 products Image qualityprocessor Radiometry Geometry Radiometry Inversion COMMISSIONNING Sentinel-2 Technical Expertise Center CNES Toulouse, France Radiometric correction •Equalization •non The iCOR Sentinel-3 atmospheric correction plug-in ; Sindy Sterckx - VITO 15. Delgado4,5 sentinel-2. Already more than 700 registered users are now able to use the same atmospheric correction for Sentinel-2, Landsat-8 and Sentinel-3. To evaluate this dataset, surface data at 40 sites of the aerosol robotic network over North America from January 2016 to August 2017 were collected and processed. In this case the system will use DOS1 calculation instead for those tiles. I would like to ask when will it accessible in Geomatica 2016. You must have a separate license for the ENVI Atmospheric Correction Module; contact your sales representative for more information. atmospheric correction with 6s. Atmospheric Correction + Masks •AerosolAOT, water vapor, … •Terrain correction •Cloud & shadow masks Level1A Init_loc_Prod Level1C Sentinel-2 products Image qualityprocessor Radiometry Geometry Radiometry Inversion COMMISSIONNING Sentinel-2 Technical Expertise Center CNES Toulouse, France Radiometric correction •Equalization •non knowledge on atmospheric composition derived from CAMS, as well as expectation of spatial smoothness. A dataset of in situ measurements from different sources covering a variety of water bodies, classified as coastal (Baltic and Western Channel) and inland, has been used to generate a set of match-up points within a ±3h window with the Sentinel-2A overpasses for coastal data and ±24 h for inland. A trip to Tierra del Fuego with Sentinel Hub, in search of custom script that would Atmospheric correction can now be performed by finding the value of a single  28 Feb 2018 As seen from Table 1, the spatial resolution of each band of the Sentinel-2A data is not consistent, and the bands after atmospheric correction  9 Nov 2005 ATCOR [3] is a widely used atmospheric correction tool which can process Sentinel-2 is a polar orbiting satellite constellation of two units. the Sen2Cor atmospheric correction processor for the generation of Level 2A products. 0, MODTRAN 5. the sentinel-2 level 2A is a BOA reflectance pre-processed product, so it was corrected for the atmospheric disturbance. Atmospheric Correction for Coastal and Inland Waters – Current Capabilities and Challenges Nima Pahlevan Research Scientist NASA Goddard Space Flight Center Package ‘landsat’ February 20, 2015 Type Package Title Radiometric and topographic correction of satellite imagery Version 1. Atmospheric correction of optical satellite imagery is an essential pre-processing for modelling biophysical variables, multi-temporal analysis, and digital  16 May 2018 ABSTRACTImage correction for atmospheric effects (iCOR) is an atmospheric correction tool that can process satellite data collected over  29 Mar 2017 The atmospheric correction results of the visible bands illustrate the For instance, ESA provides a Sentinel toolbox that includes a Sen2Cor. 29 Sep 2018 I want to run some time series analysis on sentinel-2 data in EE for my The biggest issue is that there isn't any for atmospheric correction. ESA generates these products in the ground segment using the sen2cor software developed and maintained by DLR/Telespazio. Therefore the atmospheric correction processor Sen2Cor was developed by Telespazio VEGA Deutschland GmbH on behalf of ESA. Both organisations have a vested interest in progressing consolidation of an ARD standard due to a desire to publish Sentinel and Landsat ARD retrospectively as part of their core data dissemination activities. When all of the product data is in two UTM zones, you may also be prompted to select a zone number. The second correction has to do with differences in sun angle and brightness. • 4 dates, 6 plots and 9 spectral bands assessed. For, approximate corrections, the SMAC model should be one of the simplest. and Ruddick, K. Submitted for the proceedings of the Sentinel-3 for Science Workshop held in Venice-Lido, Italy, 2-5 June 2015, ESA The product produces natural color images using Sentinel-2 bands 4, 3 and 2. 40 Altimetry (Room D) Land, Temperature, Atmosphere (Magellan) Ocean Colour (James Cook) Sentinel-3 A&B constellation now in DUACS: first results and perspectives ; Yannice Faugère - CLS Sentinel-3 SLSTR Traceability and Calibration ; Dave Smith - RAL CESBIO is also involved in the cloud masking and atmospheric correction schemes used in the Venµs ground segment, in the Sentinel-2 simplified Level2 product processor and in the French Theia Land Data Center. As you probably know if you have been following this blog, MACCS works with time series to detect clouds, shadows, water and estimate aerosols optical thickness. 5-μm visible and shortwave infrared (VSWIR) range captures the majority of solar-reflected energy and enables a wide range of earth surface studies. sentinel-2 mission performance centre / 1 mission performance centre sentinel-2 l2a processor sen2cor eufar esa workshop on atmospheric correction of remote sensing data 26 – 28 october 2016, berlin, germany SEN2COR: Atmospheric and Topographic Correction of Simulated Level-1C Test Datasets Uwe Mueller-Wilm, Telespazio-VEGA, Germany Jerome Louis, Telespazio France Rudolf Richter, DLR, Germany Ferran Gascon, ESA, Italy Marc Niezette, Telespazio-VEGA, Germany Instruments. The Sentinel-3 component of the GMES Program is responsible for the collection of sea and land color data through the Ocean and Land Color Instrument (OLCI), sea and land surface temperature through the Sea and Land Surface Temperature Radiometer (SLSTR), and sea and land surface topography data using a Synthetic Aperture Radar Altimeter (SRAL) and Microwave For Sentinel-1 and other SAR data, calibration and corresponding terrain correction would be an example of such a preprocessing chain. The Sentinel-3 component of the GMES Program is responsible for the collection of sea and land color data through the Ocean and Land Color Instrument (OLCI), sea and land surface temperature through the Sea and Land Surface Temperature Radiometer (SLSTR), and sea and land surface topography data using a Synthetic We would like to serve data as they are, without uncontrolled changes, because it is almost impossible to set color balance to one fitting all places in the world and all groups of users. Sentinel-3 Instruments. poster 2 low altitude remote sensing of suspended sediment concentration from an unmanned aerial vehicle joseph adelson, oliver fringer poster 10 a new approach for estimating total suspended solids (tss) in inland and nearshore coastal waters Due to a nature of NFS in relation to our large repository, this kind of problems may appear from time to time if the connection to NFS server is lost for whatever reason. Apparent Reflectance function This function adjusts image brightness digital number (DN) values for some satellite sensors, similar to an atmospheric correction. Remote imaging spectroscopy in the 0. When you have high NDVI values, you have healthier vegetation. The satellite carries the AMSR2 (Advanced Microwave Scanning Radiometer 2) instrument, the successor to the AMSR-E carried by Aqua. Together with the alternative atmospheric correction system MACCS, the developed chain based on ATCOR is used for the estimation of the following products: Atmosphere type, Bottom of atmosphere reflectance (including cirrus detection and correction), Aerosol optical thickness, and Water vapor. Coghlan a a Environmental Geoscience Division, Geoscience Australia, GPO Box 378, ACT, 2601, Australia Sentinel-2 image of bare land with a small cloud in lover right area (left) and corresponding cloud masks as determined by MAJA (middle) and earlier versions of Sentinel Hub Cloud Detector (right ATCOR3 is atmospheric correction and haze removal software used to correct changes in the spectral reflectance of materials on the earth's surface. The SENTINEL-2 calibration activities under SENTINEL-2 MPC responsibility, correspond to the process of updating on-board and on-ground configuration parameters and algorithms. You'll need to run ESA's Sen2Cor algorithm to process Sentinel-2 Level-1C data to Level-2A. COST atmospheric correction is applied, the result is top-of-at-mosphere reflectance or apparent reflectance, which includes atmospheric effects. Water leaving reflectances. It was developped by Vanhellemont, Q. 4–2. atcorr and i. topo. You can do an atmospheric correction through the github script I posted in the OP. Makarau, Aliaksei und Richter, Rudolf und Storch, Tobias und Reinartz, Peter und Galli, Luca (2016) Atmospheric Correction in Sentinel-2 Simplified Level 2 Product Prototype Processor: Technical Aspects of Design and Implementation. In this study, the Sentinel-2A surface reflectance was generated using the Sentinel-2 atmospheric correction (Sen2Cor) processor. There is work underway to address them but due to a bug with pixel geocoding there is no current ETA. 3) model, and the SEN2COR-based model. It is a multi-mission toolbox, already providing support for Sentinel-2, RapidEye, Deimos, SPOT 1 to SPOT 5 datasets. sentinel atmospheric correction

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