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  • Documents (28471)
  • Tools - Catalogues

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    CS2EO

    CS2EO is a data catalogue that allows users to easily and quickly combine and download airborne and spaceborne altimetry data from CryoSat-2, ICESat-2, CryoVEx, IceBridge and CryoTEMPO-EOLIS.

  • News - Infographics

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    Showcasing success stories from ESA's Heritage Missions

    Find out how ESA's Heritage Space Programme data continue to help, even decades after they finished operations, in our latest infographic.

  • Document - Newsletter

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    Earth Online Newsletter - 08 March 2024

    This issue of the Earth Online Newsletter covers a selection of the latest news and events from ESA.

  • 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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    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.

  • 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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    Atmospheric Thematic Data Product [MWR_TDPATM]

    This is the Atmospheric Thematic Data Product (TDP) V1 resulting from the ESA FDR4ALT project and containing Total Column Water Vapour (TCWV), Cloud Liquid Water Path (LWP), Atmospheric Attenuation of the altimeter backscattering coefficient at Ku-band (AttKu), and Wet Tropospheric Correction (WTC), retrieved from observations of the Microwave Radiometer (MWR) instruments flown on-board the ERS-1, and ERS-2, and Envisat satellites. Compared to existing datasets, the Atmospheric TDP demonstrates notable improvements in several aspects: Improved temporal coverage, especially for ERS-2 Improved L0 -> 1 processing Two different corrections are provided based on a neural network retrieval or on a 1D-VAR approach 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 - Sample Data (Open)

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    CryoSat Data Samples

    Download CryoSat data samples from Baseline-B, C, and D products.

  • Document - Product Handbook

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    SAR Tropical Oceanic Phenomena Handbook

    ERS SAR Tropical Oceanic Phenomena Handbook.

  • News - Data Release news

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    CryoSat swath data boosted with new glacier regions and gridded products

    Additional products have been added to CryoTEMPO-EOLIS Baseline 2, increasing global coverage and adding to the range of available gridded data.

  • News - Maintenance News

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    CryoSat CalVal server downtime on 27 February 2024

    Due to routine maintenance activities on 27 February 2024, between 08:00-10:00 UTC, the distribution of CryoSat L0 products and AUX files may be impacted.

  • News - Operational News

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    Announcement for CryoSat Quaternions Product users

    CryoSat users who use the Quaternions Products should be aware that the method to access these products is changing.

  • Document - Newsletter

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    Earth Online Newsletter - 09 February 2024

    This issue of the Earth Online Newsletter covers a selection of the latest news and events from ESA.

  • News - Success Stories

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    Trailblazing ERS-2 mission enables climate change applications

    As ESA’s ERS-2 satellite approaches Earth’s atmosphere for reentry, it’s time to reflect on the mission’s great achievements in powering climate-related applications.

  • Document - Product Handbook

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    SAR Tropical Atmospheric Phenomena Handbook

    ERS SAR Tropical Atmospheric Phenomena Handbook.

  • News - Operational News

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    Delay in the Availability of CryoSat Products - Issue Resolved

    The CryoSat operational team have successfully resolved a technical issue at the CryoSat Payload Data Ground Segment.

  • News - Operational News

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    Delay in the availability of CryoSat Products

    A technical issue occurred at the CryoSat Payload Data Ground Segment (PDGS).

  • News - Success Stories

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    CryoSat land ice data track destabilisation of Antarctic glacier

    Even apparently stable glaciers in Antarctica are at risk of losing large quantities of ice due to warming seas. The warning comes after satellite data showed the Cadman glacier – previously stable for 50 years - retreated by 8 km between November 2018 and May 2021.

  • Document - Newsletter

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    Earth Online Newsletter 01 December 2023

    This issue of the Earth Online Newsletter covers a selection of the latest news and events from ESA.

  • News - Data Release news

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    Global glacier mass change data now available from CryoSat

    Measuring glacier mass changes from space is more accurate and comprehensive thanks to the CryoTEMPO-EOLIS CryoSat swath data products, which now cover glaciers worldwide.