OSI SAF | Observing oceans from space
Updated @ 2020-10-24 20:57 utc
OSI SAF HY-2B 25-km product
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Background information
OSI SAF near real time Wind Products
OSI SAF Wind Climate Data Records
Discontinued Wind Products
Other Wind Services at KNMI
Related links
OSI-114-a, status: in development
Ascending passes
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Descending passes
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09-Apr-2019 Use improved Geophysical Model Function NSCAT4DS and apply Sea Surface Temperature corrections to backscatter to reduce systematic wind speed and direction biases.
28-Jan-2019 Initial version of HY-2B winds made available to the users. PenWP version is 2_2_02.
At KNMI the backscatter products coming from the HSCAT scatterometer instrument on board the HY-2B satellite are processed towards a 25 km product for the EUMETSAT OSI SAF. Details are described in the HY-2B 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 products are available on a password protected FTP server (products of the last three days only). Contact the KNMI OSI SAF team for access. Note that following agreements between NSOAS and EUMETSAT the data distribution is currently limited to the members of the HY-2B validation project.

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 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.
KNMI hosts the operational deployment of this product as part of the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSI SAF), a project by Météo France, the Norwegian Meteorological Institute, the Danish Meteorological Institute, Ifremer and the Royal Netherlands Meteorological Institute (KNMI).

The HY-2B level 1B HDF products used for this product are made available by the Chinese National Satellite Ocean Application Service (NSOAS). The processing software for the wind products is developed by KNMI with support from NSOAS and it is available on the website of the Numerical Weather Prediction Satellite Application Facility (NWP SAF) sponsored by EUMETSAT.