Metop ASCAT 5.7 km Winds

Demonstrational Near real time product

The OSI SAF ASCAT winds from Metop-B are available on a high resolution swath grid size of 5.7 km as a demonstration product, parallel to the existing operational 25 km and 12.5 km products. Several users have asked for a higher resolution product and we welcome very much your feedback if you are interested to evaluate the products. Based on the feedback we will consider whether or not a future operational status is useful for these products. The products are disseminated in BUFR and NetCDF format and they are available only on the KNMI FTP server, not through EUMETCast.

OSI SAF producer : Royal Netherlands Meteorological Institute
Identifier : OSI-AW5.7
Processing level : L2
Satellite input : Metop-B/ASCAT
Other input : ECMWF outputs (wind, SST, land-sea mask)
Frequency : Continuous
Spatial coverage : Global
Spatial sampling : 5.7 km
File Formats : WIND FTP Server (BUFR), WIND FTP Server (NetCDF3)
Characteristics & methods : Swath sigma0’s and wind vectors
Data Access
Main Diffusion Means : WIND FTP server, last 3 days (hosted by KNMI, for access contact :
Accuracy Requirements
Target accuracy : NA
On FTP server since :
  • The winds are produced using the CMOD7 geophysical model function and contain stress-equivalent ECMWF background model winds as auxiliary data.

    Background information on high resolution ASCAT wind retrievals can be found in this paper:
    Vogelzang, J. and A. Stoffelen, ASCAT ultrahigh-resolution wind products on optimized grids, IEEE Journal of Selected Topics in Applied Earth O, 2017, 10, 5, 2332-2339, doi:10.1109/JSTARS.2016.2623861.

  • Metop-A is not processed any more from November 2021.

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