At KNMI the backscatter products coming from the HSCAT scatterometer instrument on board the HY-2C satellite are processed towards a 50 km product for the EUMETSAT OSI SAF. Details are described in the HY-2 Wind Product User Manual.
The processing is done in near-real time. From the sensing time of the end of an input file, it takes approximately 2.5 hours to get the corresponding wind product ready at KNMI.
The last 22 hours of data are shown in two separate plots showing ascending and descending tracks, respectively. This is done to avoid overlap of data in the pictures. Note that also data from previous days can be displayed using the link on the right hand side. The overview plots show color coded wind speed measurements. If you click somewhere in the satellite track, a picture appears showing the scatterometer winds in more detail.
Product monitoring information in near-real time is available through the corresponding link on the right hand side.
Note: This web site is not supported on a 24x7 basis and it should not be considered operational.
Access to products
This wind product is available in BUFR and NetCDF format. The BUFR data are disseminated through the EUMETCast system; for access please contact EUMETSAT. The products are also available on a password protected FTP server (products of the last three days only). Contact the KNMI OSI SAF team for access. Historic data can be obtained through the EUMETSAT Data Centre.
For a swift response management procedure, user requests on this scatterometer wind data product should be issued at the Ocean and Sea Ice SAF website.
Note: All intellectual property rights of the OSI SAF and EARS products belong to EUMETSAT. The use of these products is granted to every interested user, free of charge. If you wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words "copyright (year) EUMETSAT" on each of the products used.
The HY-2C winds have been unavailable between 11 July 9:00 and 13 July 03:00 UTC sensing time due to an instrument anomaly.
The HY-2C winds have been unavailable or delayed between 2 April 4:00 and 4 April 9:00 UTC due to a data link issue.
The HY-2C winds are available on EUMETCast.
The HY-2C winds are now publicly available on the KNMI FTP server with operational status.
The HY-2C winds have been unavailable between 1 July 21:43 and 4 July 03:23 UTC sensing time due to a spacecraft anomaly.
The HY-2C winds have been deteriorated between 24 March 6:00 and 25 March 13:00 UTC due to a spacecraft anomaly.
Reduced the gap between successive orbit files for better coverage near the south pole. PenWP version is 2_2_04.
Initial version of HY-2C winds made available for visualisation. PenWP version is 2_2_02.
KNMI hosts the operational deployment of this scatterometer wind product as part of the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSI SAF), see related link or click on the OSI SAF logo above for more information.
The processing software for the wind products is developed in the EUMETSAT Numerical Weather Prediction Satellite Application Facility (NWP SAF) and OSI SAF.
The HSCAT level 1B HDF products used for this product are made available by the Chinese National Satellite Ocean Application Service (NSOAS).