Envisat AATSR L1B Brightness Temperature/Radiance [ENV_AT_1_RBT]
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description: The Envisat AATSR Level 1B Brightness Temperature/Radiance product (RBT) contains top of atmosphere (TOA) brightness temperature (BT) values for the infra-red channels and radiance values for the visible channels, on a 1-km pixel grid. Values for each channel and for the nadir and oblique views occupy separate NetCDF files within the Sentinel-SAFE format, along with associated uncertainty estimates. Additional files contain cloud flags, land and water masks, and confidence flags for each image pixel, as well as instrument and ancillary meteorological information. This AATSR product [ENV_AT_1_RBT] in NetCDF format stemming from the 4th AATSR reprocessing, is a continuation of ERS ATSR data and a precursor of Sentinel-3 SLSTR data. It has replaced the former L1B product [ATS_TOA_1P] in Envisat format from the 3rd reprocessing. Users with Envisat-format products are recommended to move to the new Sentinel-SAFE like/NetCDF format products. The 4th reprocessing of ENVISAT AATSR data was completed in 2022; the processing updates that have been put in place and the expected scientific improvements have been outlined in full in the _$$User Documentation for (A)ATSR 4th Reprocessing Products$$ https://earth.esa.int/documents/20142/37627/QA4EO-VEG-OQC-MEM-4538_User_Documentation_for__A_ATSR_4th_Reprocessing_Level_1.pdf .
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  has name: ESA/ESRIN
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    street-address: Largo Galileo Galilei 1
    postal-code: 00044
    locality: Frascati (Roma)
    country-name: Italy
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      street-address: Largo Galileo Galilei 1
      postal-code: 00044
      locality: Frascati (Roma)
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access rights: Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions https://earth.esa.int/eogateway/documents/20142/1564626/Terms-and-Conditions-for-the-use-of-ESA-Data.pdf
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subject: imageryBaseMapsEarthCover
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identifier: Identifier
  notation: https://doi.org/10.5270/EN1-d9ryw7t
  creator: https://doi.org/
bibliographic citation: European Space Agency, 2022, Envisat AATSR L1B Brightness Temperature/Radiance [AT_1_RBT__], Version 4.0.
modified: 2023-02-17T00:00:00.000Z
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AATSR Product Information
type: Document
description: Product Information

Imaging Spectrometers/Radiometers
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments

(A)ATSR Software Tools
type: Document
description: Tools

Envisat
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

Oceans
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/earth-topics

EARTH SCIENCE>OCEANS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

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description: All document Types

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in scheme: https://earth.esa.int/concepts/concept_scheme/earth-topics

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type: Document
description: Product Information

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type: Document
description: ESA Earth Observation User Services Portal

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type: Concept
in scheme: http://publications.europa.eu/resource/authority/access-right

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type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments

EARTH SCIENCE>OCEANS>OCEAN TEMPERATURE
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in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

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in scheme: https://earth.esa.int/concepts/concept_scheme/instruments
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type: Document
description: Software Tools

ESA_open_and_free
type: Concept
in scheme: https://maap.eo.esa.int/metadata-codelist/access-right

ENV_AT_1_RBT Product Notice Readme
type: Document
description: Product Readme Note

EARTH SCIENCE>OCEANS>SEA SURFACE TOPOGRAPHY
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

Sea Surface Topography
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/earth-topics

ENVISAT
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

CatalogRecord
modified: 2026-06-08T07:24:47Z
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/EnvisatAATSRL1BBrightnessTemperatureRadianceAT1RBT
type: CatalogRecord
conforms to: ISO19139-2

Orthoimagery
type: Concept
in scheme: http://www.eionet.europa.eu/gemet/inspire_themes

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type: Document
description: L1B Products - User Guide

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type: Document
description: Auxiliary Data