{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Earthdata Forum", "hasEmail": "mailto:earthdata-support@nasa.gov"}, "description": "The Medium Resolution Imaging Spectrometer (MERIS) is one of 10 sensors deployed in March of 2002 on board the polar-orbiting Envisat-1 environmental research satellite by the European Space Agency (ESA). The MERIS instrument is a moderate-resolution wide field-of-view push-broom imaging spectroradiometer capable of sensing in the 390 nm to 1040 nm spectral range. Being a programmable instrument, it had the unique capability of selectively adjusting the width and location of its 15 bands through ground command. The instrument has a 68.5-degree field of view and a swath width of 1150 meters, providing a global coverage every 3 days at 300 m resolution. Communication with the Envisat-1 satellite was lost suddenly on the 8th of April, 2012, just weeks after celebrating its 10th year in orbit. All attempts to re-establish contact were unsuccessful, and the end of the mission was declared on May 9th, 2012. The 4th reprocessing cycle, in 2020, has produced both the full-resolution and reduced-resolution L1 and L2 MERIS products. EN1_MDSI_MER_FRS_1P is the short-name for the MERIS Level-1 full resolution, full swath, geolocated and calibrated top-of-atmosphere (TOA) radiance product. This product contains the TOA upwelling spectral radiance measurements. The in-band reference irradiances for the 15 MERIS bands are computed by averaging the in-band solar irradiance for each pixel. Each pixel\u2019s in-band solar irradiance is computed by integrating the reference solar spectrum with the band-pass of each pixel. The Level-1 product contains 22 data files: 15 files contain radiances for each band (one band per file) along with associated error estimates, and 7 annotation data files. It also includes a Manifest file that provides metadata information describing the product.", "distribution": [{"@type": "dcat:Distribution", "conformsTo": "http://www.isotc211.org/2005/gmi", "description": "The metadata's original source.", "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2151211533-LAADS.iso19115", "format": "ISO", "mediaType": "text/xml", "title": "Original Metadata"}, {"@type": "dcat:Distribution", "downloadURL": "https://earth.esa.int/eogateway/search?skipDetection=true&text=&category=Document%2520library&filter=Envisat%2CMERIS", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/489/EN1_MDSI_MER_FRS_1P", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://ladsweb.modaps.eosdis.nasa.gov/search/order/2/EN1_MDSI_MER_FRS_1P--489", "format": "BIN", "mediaType": "application/octet-stream"}], "identifier": "10.5270/EN1-w5xkqmx", "keyword": ["earth-science-cloud-properties-atmosphere-clouds-cloud-properties-cloud-ceiling", "earth-science-clouds-atmosphere-cloud-microphysics-cloud-precipitable-water", "earth-science-infrared-wavelengths-spectral-engineering-infrared-radiance", "earth-science-landscape-land-surface-landscape-ecology", "earth-science-ocean-optics-oceans-ocean-color", "earth-science-ultraviolet-wavelengths-spectral-engineering-ultraviolet-radiance", "earth-science-visible-wavelengths-spectral-engineering-visible-radiance"], "license": "https://www.usa.gov/government-works", "modified": "2026-05-11", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "NASA/GSFC/SED/ESD/HBSL/BISB/LAADS"}, "spatial": "[\"CARTESIAN\",[{\"NorthBoundingCoordinate\":90,\"WestBoundingCoordinate\":-180,\"EastBoundingCoordinate\":180,\"SouthBoundingCoordinate\":-90}]]", "temporal": "2002-05-17/2012-04-08", "theme": ["Earth Science"], "title": "Full Resolution Full Swath Geolocated and Calibrated TOA Radiance"}