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  • All Categories (1112)
  • Data (2)
  • News (7)
  • Missions (2)
  • Tools (2)
  • Activities (1)
  • Documents (1098)
  • News - Data Release news

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    FDR4ALT - ESA unveils new cutting-edge ERS/Envisat Altimeter and Microwave Radiometer Datasets

    The European Space Agency (ESA) has developed a comprehensive suite of innovative Earth system data records as part of the Fundamental Data Records for Altimetry project - FDR4ALT.

  • Data - EO Sign In Authentication (Open)

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    Land Ice Thematic Data Product [ALT_TDP_LI]

    This is the Land Ice Thematic Data Product (TDP) V1 resulting from the ESA FDR4ALT project and containing estimates of ice sheet surface elevation and associated uncertainties. The collection covers data for three different missions: ERS-1, ERS-2 and Envisat, and based on Level 1 data coming from previous reprocessing (ERS REAPER and the Envisat V3.0) but taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (ALT FDR). The Land Ice TDP focuses specifically on the ice sheets of Greenland and Antarctica, providing these data in different files. For many aspects, the Land Ice Level 2 and Level 2+ processing is very innovative: Improved relocation approach correcting for topographic effects within the beam footprint to identify the Point of Closest Approach Homogeneous timeseries of surface elevation measurements at regular along-track reference nodes. The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used. Information for expert altimetry users is also available in a dedicated NetCDF group within the products. Please consult the FDR4ALT Product User Guide before using the data. The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.

  • Data - EO Sign In Authentication (Open)

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    Sea Ice Thematic Data Product [ALT_TDP_SI]

    This is the Sea Ice Thematic Data Product (TDP) V1 resulting from the ESA FDR4ALT project and containing the sea ice related geophysical parameters, along with associated uncertainties: snow depth, radar and sea-ice freeboard, sea ice thickness and concentration. The collection covers data for the ERS-1, ERS-2 and Envisat missions, and bases on Level 1 data coming from previous reprocessing (ERS REAPER and the Envisat V3.0) but taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (ALT FDR). The Sea Ice TDP provides data from the northern or southern hemisphere in two files corresponding to the Arctic and Antarctic regions respectively for the winter periods only, i.e., October to June for the Arctic, and May to November for the Antarctic. For many aspects, the Sea Ice TDP is very innovative: First time series of sea-ice thickness estimates for ERS Homogeneous calibration, allowing the first Arctic radar freeboard time series from ERS-1 (1991) to CryoSat-2 (2021) Uncertainties estimated along-track with a bottom-up approach based on dominant sources ERS pulse blurring error corrected using literature procedure [Peacock, 2004] The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used. Information for expert altimetry users is also available in a dedicated NetCDF group within the products. Please consult the FDR4ALT Product User Guide before using the data. The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.

  • News - Events and Proceedings

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    Data preservation takes centre stage at Living Planet Symposium

    Against the backdrop of the famed Rhine River, world-class scientists and Earth observation data-users are gathered this week in the historical city of Bonn, at the Living Planet Symposium (LPS).

  • News - Spotlight on EO community

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    Introducing Mirko Albani

    In this short introduction, ESA's Heritage Missions Programme Manager describes what he likes most about ESA's long term archive of satellite mission data and his role in the programme.

  • News - Success Stories

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    How Envisat helped to shape global understanding of Earth’s systems

    Twenty years have passed since a ground-breaking European spacecraft designed to deliver unprecedented insight into the planet’s changing environment was lofted into orbit.

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 02 Jan 2006

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 22 Jan 2007

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 06 Feb 2006

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 17 Jan 2005

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 02 Feb 2004

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 17 Feb 2003

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 06 Jun 2005

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 21 Jun 2004

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 07 May 2007

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 26 Feb 2007

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 02 Jun 2003

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 28 Apr 2003

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 07 Jul 2003

    Envisat MWR Cyclic L1 Report

  • Document - Quality Report

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    Envisat MWR Cyclic L0-1 Report 21 Feb 2005

    Envisat MWR Cyclic L1 Report