EU-WEMSAR: Wind Energy Mapping using Synthetic Aperture Radar

    Project Details


    The WEMSAR project runs from year 2000 to 2002. The project is funded from the European Union 5th Framework Programme on Research Technology Development and Demonstration within the Energy, Environment and Sustainable Development Programme.


    To develop, validate and demonstrate the potential use of satellite-based Synthetic Aperture Radar (SAR), scatterometer and altimeter data combined with meteorological observations for the mapping of wind resources in off-shore and near-coastal regions.

    Satellite SAR data

    Currently satellite SAR data are retrieved by the European satellite ERS-2 SAR from the European Space Agency (ESA) and by the Canadian RADARSAT-1. From year 2000 Advanced Synthetic Aperture Radar (ASAR) data from ENVISAT and in year 2001 SAR data from RADARSAT-2 will become available. SAR data has a resolution of about 25 m in the horizontal domain. In the WEMSAR project the SAR data will be regridded to a 400 m resolution.

    Satellite altimeter data

    Altimeter data are available from ERS-2 Altimeter and TOPEX/POSEIDON from NASA. The footprint is approximately 7 km.

    Satellite scatterometer data

    Scatterometer data are available from ERS scatterometer from ESA, SeaWinds from QuikScat at the American satellite TITAN II from NASA, SeaWinds at the Japanese satellite ADEOS II and NSCAT at ADEOS I. Global near-real time observations of ocean winds are available from QuikScat. The horizontal resolution is 50 km.

    Wind resource mapping

    In the WEMSAR project the off-shore wind resources will be calculated at regional and local scale for three sites located in Norway, Denmark and Italy. For the regional scale calculations the Karlsruhe Atmospheric Mesoscale Model (KAMM) will be used and for the local scale calculations WAsP.

    Charlotte Bay Hasager coordinated the work at Risø on mapping wind resources from SAR.


    Nansen Remote Sensing Centre (NERSC) in Bergen, Norway (Prof. Ola Johannessen project co-ordinator; Dr. Stein Sandven, Dr. Heidi Espedal, Dr. Birgitte Furevik, Dr. Torill Hamre, Dr. Lasse Pettersson)

    Risø National Laboratory, Wind Energy and Atmospheric Physics Dept.(Dr. Charlotte Bay Hasager, Dr. Bo Hoffmann Jørgensen, Dr. Morten Nielsen, Dr. Sara Pryor, Dr. Ole Rathmann, Dr. Rebecca Barthelmie, Dr. Poul Astrup)

    NEG-Micon, Randers, Denmark (Lars E. Christensen)

    ENEA, Italy (Dr. Gaetano Gaudiosi)

    Terra Orbit AS, Norway (Geir Jevne)

    Project web-pages at NERSC is available at
    Effective start/end date01/01/200031/12/2002


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