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  • Data (4)
  • News (6)
  • Missions (1)
  • Events (2)
  • Tools (2)
  • Activities (1)
  • Documents (1146)
  • News - Thematic area articles

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    Transforming space data into climate action

    ESA’s Earth observation activities are playing a key role in the revitalised global drive to combat climate change.

  • Document - Technical Note

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    The RA-2 On-Board Tracker and its Autonomous Adaptable Resolution

    This technical note describes the complete functionality of the RA-2 on-board Tracker and how its Resolution Selection Logic (RSL) works. It gives a detailed analysis of the algorithm and its configuration parameters.

  • Document - General Reference

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    The Envisat Radar Altimeter System (RA-2)

    This article was published in the ESA Bulletin Nr. 98 and givesdetails on RA-2 and on its role in the ENVISAT mission.

  • Document - General Reference

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    Taking-the-Measure-of-Earth-Fifteen-Years-of-Progress-in-Radar-Altimetry.pdf

    This article is extracted from ESA Bulletin Nr. 128.

  • Document - Conference Presentation - Poster

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    Remaining-East-West-bias-explained.pdf

    This presentation shows the results obtained from a scientific assessment on the use of GDR-D improved orbit standard and of the consequent improvement in the Sea Surface Height and Sea Level Anomaly Data of altimeter GDR data (A. Ollivier, OSTST 2011).

  • Document - Publication - Paper

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    RA-2-S-Band-anomaly-detection-and-waveforms-reconstruction.pdf

    This paper describes the algorithm developed for the L1b processor that allows to set a flag identifying the data affected by the S-Band anomaly and reconstruct normal echo waveforms.

  • Document - Product Cal/Val Plan/Report

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    RA-2-In-Flight-Instrument-Calibration-and-Level-1b-Verification-Plan.pdf

    This document describes the plan for the RA-2 In-flight Instrument Calibration and Level lb Verification procedures.

  • Document - Technical Note

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    RA-2 S-Band Anomaly Investigation

  • Document - Technical Note

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    RA-2 data Rain Flag

  • Document - Technical Note

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    RA-2 Anomaly of 01-02-2006

  • Document - Product Cal/Val Plan/Report

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    Passive Calibration of the Backscattering Coefficient of the Envisat RA-2

    Passive Calibration of Backscattering Coefficient of Envisat RA-2: final report

  • Document - Publication - Paper

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    OPERATIONAL-CORRECTION-FOR-THE-RA2-SIDE-A-USO-ANOMALY.pdf

    This paper presents the method implemented to correct the anomalous data as well as the assessment of the quality and performance of the corrected data through two different analyses.

  • Document - General Reference

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    Monitoring-River-and-Lake-Levels-from-Space.pdf

    This article was published in the ESA Bulletin Nr. 117 and describes the new global river and lake monitoring products developed by ESA with the help of De Monfort University (UK).

  • Document - Technical Note

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    Level-1B-and-Level-2-processing-upgrades.pdf

    This document contains user information relative to the operational implementation of the RA2/MWR Level 1b IPF version up to v6.04 and Level 2 processor CMA v9.3 used to generate Altimetry Data Set 2.1.

  • 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.

  • 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.

  • Data - EO Sign In Authentication (Open)

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    Inland Waters Thematic Data Product [ALT_TDP_IW]

    This is the Inland Waters Thematic Data Product (TDP) V1 resulting from the ESA FDR4ALT project and containing improved Water Surface Height (WSH) data record from the ERS-1, ERS-2 and Envisat missions estimated using the ICE1 retracking range for its better performance on the hydro targets. 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.

  • Document - Conference Presentation - Poster

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    Improving-the-long-term-stability-of-the-GDR-orbit-solutions.pdf

    This presentation shows the results and the benefits of using new GDR-D orbit standards for ENVISAT mission. (L. Cerri et al., OSTST 2011).

  • Tools - Apps

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    Heritage Missions app for iOS

    Download the Heritage Missions application to discover what the missions were about, how it worked and what the elements of the space and ground segment that make these missions unique.