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  • Data - Data Description

    Data - Data Description

    ERS-1/2 ATSR Averaged Surface Temperature [AT1/AT2_AR__2P]

    The Averaged Surface Temperature Product (AST) contains averaged geophysical data at two different resolutions, and with respect to two different averaging schemes: measurement data sets at resolutions of 0.5 by 0.5 degrees and 10 by 10 arcmin with respect to a latitude/longitude grid; other data sets contain data averaged over equal area cells of 50 by 50 km and 17 by 17 km aligned with the satellite ground track. Both top-of-atmosphere and surface data sets are provided. The surface temperature data sets provide, for sea cells, nadir and dual view sea surface temperatures, and for land cells, land surface temperature (currently 11 micron BT) and NDVI. Cloud data is also included. No ADS are included in the AST product; auxiliary data is contained within the MDS. The data sets of the AST product are arranged by surface type and resolution. The 3rd reprocessing of ATSR data was performed in 2013; the processing updates that have been put in place and the scientific improvements are outlined in full in the User Summary Note for the Third ERS ATSR Reprocessing.

  • Data - Data Description

    Data - Data Description

    ERS-2 GOME Spectral Product L1

    leakage current and stray light). Such calibrations are now applied to the version 5.1 L1b data product in the standard processing. Use...

  • Data - Data Description

    Data - Data Description

    ERS PRARE Precise Orbit Product (ERS.ORB.POD/ERS.ORB/PRC)

    The precise orbit results from a data reduction process in which all available tracking data (Single-Lens Reflex, radar altimeter crossovers, PRARE range and Doppler data) and most accurate correction, transformation and dynamical models are taken into account and in which high level numerical procedures are applied. These orbits are "optimal" achievable representations of the real orbital motion under the circumstances of tracking situation and the "state of the art" model situation. The precise orbit product for the ERS satellites are the satellite ephemeris (position and velocity vector) including time tag, given in a well-defined reference frame, together with the nominal satellite attitude information and a radial orbit correction. Several orbit solutions are currently distributed: A new set of ORB POD (Precise Orbit Determination - REAPER v2) computed with the most updated model standards for the complete ERS-1 and ERS-2 mission. A previous set of ORB POD (REAPER v1) data already available on the ESA dissemination site since 2014, covering the ERS-1 full mission and the ERS-2 mission up to July 2003. ORB PRC which is the original Precise Orbit dataset computed during the ERS mission operations for ERS-1 and ERS-2. In the new POD dataset (REAPER v2) for the ERS-1 and ERS-2 missions, two different orbit solutions are provided together with the combined solution to be used for processing of the radar altimeter measurements and the determination of geodetic/geophysical products: those computed by DEOS (Delft Institute of Earth Observation and Space Systems), and those generated by ESOC (European Space Operations Centre) using different software (GEODYN and NAPEOS respectively). Careful evaluation of the various solutions of REAPER v2 has shown that the DEOS solution for both ERS-1 and ERS-2 has the best performance and is recommended to be used as reference. See the ERS Orbit Validation Report. For the previous version of the POD data set (REAPER v1), with ERS-2 mission data only up to 2003, three different orbit solutions together with the combined solution are available. These precise orbits for ERS-1 and ERS-2 have been computed at DEOS, ESOC, and GFZ (Deutschen GeoForschungsZentrums) using different software and different altimeter databases. Combined solutions have been created using three individual solutions for each satellite. All orbits were derived using consistent models in the same LPOD2005 terrestrial reference frame. These new orbit solutions show notable improvement with respect to DGME04 orbits (Scharroo and Visser, 1998). Thus, RMS crossover differences of new orbits improved by 4-9 mm. Careful evaluation of the various solutions has shown that the combined solution for both ERS-1 and ERS-2 has the best performance. All POD orbit files (REAPER v1/v2) are available in SP3c format.

  • Campaign


    TerraSAR SIM

    The current mission design envisages flying two separate radars on separate platforms

  • News - Events and Proceedings

    News - Events and Proceedings

    VH-RODA: Very High-resolution Radar & Optical Data Assessment workshop

    The workshop, hosted by ESA/ESRIN, will provide an open forum for the presentation and discussion of the current status and future deve...

  • Tools - Processing

    Tools - Processing


    The current version of PolSARpro is 6

  • News - Scientific Highlights

    News - Scientific Highlights

    Heritage data still widely used today

    Current satellite missions collect data with high frequency, with some able to systematically revisit the same location in the same geo...

  • News - General News

    News - General News

    A stroll through Heritage Missions

    In the current digital era, this confirms ESA’s commitment to maintain heritage data and keep information available, in support of envi...

  • Instrument - Altimeters

    Instrument - Altimeters

    RA (ERS)

    The Radar Altimeter (RA) was a Ku-band (13.8 GHz) nadir-pointing active microwave sensor, on board ERS-1 and ERS-2 missions, designed to measure echoes from ocean and ice surfaces.

  • Event - Workshop

    Event - Workshop

    SEASAR 2012

    Ocean current retrievals and applications Wave retrievals and applications Sea ice retrievals and applications Oil spill and ship detect...

  • Event - Workshop

    Event - Workshop

    Fringe 2011 Workshop

    Fringe 2011 was the 8th International Workshop on "Advances in the Science and Applications of SAR Interferometry".

  • Event - Meeting

    Event - Meeting

    VH-RODA and CEOS SAR workshop

    The workshop, hosted by ESA/ESRIN, provided an open forum for the presentation and discussion of current status and future developments...

  • Document - General Reference

    Document - General Reference


    current and anticipated relationship and role of the ERS scatterometers in the Global Climate Observing System. Conclusions and recommendations are provided to further consolidate this relationship

  • Document - Proceedings

    Document - Proceedings

    3rd International Symposium on Retrieval of Bio and Geophysical Parameters from SAR Data for Land Applications

    Symposium provided a snapshot of where we currently stand in exploiting SAR data to understand geophysical and biophysical processes. It identified important areas for future research. in terms of

  • Document - Technical Note

    Document - Technical Note

    ERS-2 Scatterometer- Mission Performances and Current Reprocessing Achievements

    IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 50, NO. 7, JULY 2012 2427 ERS2 Scatterometer: Mission Performances and Current Reprocessing Achievements Raffaele Crapolicchio, Giovanna De

  • Mission - Third Party Missions

    Mission - Third Party Missions

    TerraSAR-X and TanDEM-X

    The TerraSAR-X and TanDEM-X satellites feature a unique geometric accuracy that is unmatched by any other spaceborne sensor.

  • Mission - Third Party Missions

    Mission - Third Party Missions

    Landsat Series

    The Landsat series is the world's longest running system of satellites for moderate-resolution optical remote sensing for land, coastal areas and shallow waters.

  • Instrument - Imaging Radars, Scatterometers

    Instrument - Imaging Radars, Scatterometers

    SAR (ERS) Processor Releases

    Processor Releases It should be noted that for SAR, each product ordered is processed directly from the raw data, using the current vers...

  • Activity - Quality

    Activity - Quality


    The SCIRoCCo project aims are to consolidate current methodologies for scatterometer data processing and calibration

  • Instrument - Spectrometers/Radiometers

    Instrument - Spectrometers/Radiometers

    GOME Products Information

    GOME Products This information is applicable to the GOME products available to users through the ESA GOME Online Dissemination System. In particular, the Level 2 version 5 dataset generated in 2012, and the data resulting from the GOME-Evolution project: Level 1 version 5.1 data and TCWV time-series. Level 1 version 5.1 dataset – released 2018 Level 2 GDP version 5.0 dataset – released 2012 TCWV Climate product – from Evolution project – released 2018 All GOME datasets span the period from June 1995 to July 2011. The GOME-Evolution TCWV Climate product covers the period from July 1995 to December 2015. Details on the datasets currently distributed are in the ERS-2 GOME Products availability Table GOME Level 1 version 5.1 The GOME Level 1 Data Processor (GDP) Version 5.1 was developed within the GOME Evolution and Outreach project (2014-2017) and was used to perform the first complete post-operational Level 0-to-1 full-mission reprocessing campaign with output products in NetCDF-4 format. The GOME Level 1b dataset version 5.1 provides fully calibrated Earthshine radiances, and it brings significant quality improvements with respect to the quality of the data for the revised calibration approach. Users of GOME Level 1 products are strongly recommended to migrate to this dataset. Note that no operational Level 2 processing was carried out from these data. GOME Level 1 version 5 Technical Documents: Algorithm Theoretical Baseline Document (ATBD) Product User Manual (PUM) Products Quality Readme File GOME Validation Report GOME Level 2 The GOME Level 2 Data Processor Version 5 (GDP 5 in short) was used to perform the latest post-operational Level 2 full mission reprocessing campaign, which was based on the old GOME Level 1 version 4 data. The Level 2 dataset (HDF-5 format) was released on 14 September 2012 and includes total column densities of ozone and nitrogen dioxide, and cloud parameters. GOME Level 2 version 5 Technical Documents: Products Quality Readme File Algorithm Theoretical Baseline Description (ATBD) Product User Manual GOME GDP 5 Validation Report Additional information can be found on the DLR / ATMOS website. GOME TCWV Climate product The ESA GOME-Evolution Climate water vapour product presents homogenized time-series of the global distribution of water vapour total columns (TCWV) spanning over more than two decades and based on measurements from the satellite instruments GOME, SCIAMACHY, and MetOp-A GOME. Details are available in Beirle et al., 2018. GOME TCWV Climate product Technical Documents: ESSD paper by S. Beirle et al. 2018 GOME TCWV Products Quality Readme File Danielczok, A. and Schröder, M. - GOME Evolution Climate product validation report, version 2, 2017 Grossi, M. - GOME Evolution Climate Product - Comparison results: time series, 2017 GOME TCWV Advanced AMF Algorithm (A3) product In the framework of the ESA GOME-Evolution project, an additional improved water vapour total columns (TCWV) product was developed by the Max-Planck-Institute for Chemistry (Mainz, Germany) adopting the Advanced AMF (A³) Algorithm. Validation of the resulting products showed the consistency of the global H2O VCD distribution with existing datasets, but also clearly indicated a strong dependence on cloud properties. Acceptable results were only obtained for medium cloud conditions. As the new product has not reached the expected maturity and further investigations are required, the resulting dataset is currently not open to the users. GOME TCWV Advanced AMF Algorithm (A3) product Technical Documents: Algorithm Theoretical Baseline Description (ATBD)