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Satellite Application Facility for Numerical Weather Prediction

The NWP SAF is a EUMETSAT-funded activity that exists to co-ordinate research and development efforts among the SAF partners to improve the interface between satellite data and NWP for the benefit of EUMETSAT member states. The NWP SAF is led by the Met Office, with partners ECMWF, KNMI and Météo-France. More about the aims of the NWP SAF.

NWP SAF overview from EUMETSAT's IMAGE newsletter (PDF file)

 NWP SAF deliverables
The SAF is concerned with the NWP data assimilation process rather than with generating geophysical parameters. Its main deliverables are software packages and data monitoring reports.
 NWP SAF news
  • RTTOV v11.3 has been publicly released. Changes from the previous release, v11.2, include new Python and C++ interfaces to RTTOV, updates to the RTTOV GUI (including new 1DVar functionality), an option to specify input units for gas profiles, various improvements in the treatment of surfaces and new interactive scripts to compile RTTOV and download coefficients as well as other enhancements and bug-fixes. See the RTTOV pages for more information. 29 Sep 2015.
  • AAPP update 7.10 has been released. The main change is the addition of VIIRS to CrIS mapping software. More information is available on the AAPP pages. 16 Jun 2015.
  • The first public beta version of the Pencil beam Wind Processor (PenWP) is ready for release by the EUMETSAT Numerical Weather Prediction SAF. PenWP generates surface winds from backscatter data from the SeaWinds (on QuikSCAT or ADEOS-II), OSCAT (on Oceansat-2), HSCAT (on HY-2A) and RapidScat (on the International Space Station) scatterometer instruments. 09 Jun 2015.
  • AAPP update 7.9 has been released. This includes a new version of the MAIA4 cloud mask for VIIRS. A new feature is that MAIA4 can accept model background fields from the GFS model - available via the internet. More information is available on the AAPP pages. 24 Feb 2015.
 Further news items can be seen on the NWP SAF News page.
 Visiting scientists

A visiting scientist programme allows scientists from institutions that are not SAF members to participate in the activities of the SAF. More about visiting scientists.
 Contact us
Questions for other users and developers can be posted on the RTTOV or AAPP Forums. To contact us with other enquiries, please use the NWP SAF Helpdesk link, or use a software request form to request a software deliverable.
 Members' site
This area of the site is restricted to the NWP SAF Development Team.

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