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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 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

    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...

  • News - Data Release news

    News - Data Release news

    New reprocessing of datasets celebrates 30 years of ERS

    For each surface, the experts will use our current knowledge acquired over 30 years of experience, to improve the ERS altimetric and ra...

  • Tools - Processing

    Tools - Processing

    PolSARpro

    The current version of PolSARpro is 6

  • News - Success Stories

    News - Success Stories

    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 - Success Stories

    News - Success Stories

    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...

  • News - General News

    News - General News

    Quality Reports Advanced Search Portal takes off

    The system by default will show the reports for the current month, but the user can easily choose a different type of visualisation, on...

  • 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

    SCI-PUB-14-0002-v01-WMO-report-1.0.pdf

    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

  • 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

    Instrument - Imaging Radars

    PALSAR Processor Releases

    Processor Releases The current ALOS PALSAR IPF integrated within the ESA On-The-Fly system is v4

  • 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...

  • Instrument - Imaging Radars

    Instrument - Imaging Radars

    PALSAR

    The ALOS PALSAR was a successor sensor to the synthetic aperture radar on-board JERS-1.

  • Activity - Quality

    Activity - Quality

    SCIRoCCo

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