Satellite Application Facility for Numerical Weather Prediction

The NWP SAF aims to improve and support the interface between satellite data/products and European activities in NWP.

The NWP SAF is one of several EUMETSAT SAFs (Satellite Application Facilities). Utilising specialist expertise from the Member States, SAFs are dedicated centres of excellence for processing satellite data and form an integral part of the distributed EUMETSAT Application Ground Segment. Further information about SAFs is available on the EUMETSAT web site.

The SAF for NWP interacts, where appropriate, with related work in other SAFs and in other EUMETSAT activities in order to enhance collaboration and to minimise duplication of effort.

Recent News and Updates

  • NRT availability monitoring enhanced to include a new plot type: - September 4, 2018
    An additional plot type has been added to the data reception timeliness monitoring pages. They show time series of the number of data arriving at DWD within certain time delay thresholds. This complements the information in the time averaged delay histograms (already provided) and allows to judge the reliability of the timeliness and stability of the received number of data. Please visit the NRT availability monitoring webpages for further information.
  • NRT data availability monitoring enhanced to include plots from Met Office: - August 22, 2018
    NRT data availability monitoring plots have been enhanced with the addition of data coverage and timeliness plots from the Met Office. The Met Office plots use the same layout as those from DWD to enable straightforward comparisons and tracking of possible causes of differences in data reception speed or outages. Please visit the NRT availability monitoring webpages for further information.
  • NRT data availability monitoring enhanced to include additional data types: - July 20, 2018
    The near-real time data availability (coverage and timeliness) monitoring has been extended in June 2018 to also include Scatterometer winds from OSCAT/ScatSat-1, radiances from MWRI/FY-3C, and AMVs from VIIRS/SUOMI-NPP.
  • DBNet monitoring for NOAA-20 ATMS and CrIS - July 16, 2018
    The DBNet ATMS and CrIS monitoring pages have been extended to include data from NOAA-20 (in addition to Suomi-NPP). EUMETSAT are currently operating EARS-ATMS and EARS-CrIS services for NOAA-20 on a trial basis, and it is expected that more DBNet centres will follow over the coming months.
  • 1D-Var v1.1.1 has been released - June 25, 2018
    A new version (version 1.1.1) of the 1D-Var package has just been released and uploaded to the NWPSAF web site ( ). This release was necessary after a bug was found in the previous NWPSAF 1D-Var package (version 1.1) which affected microwave retrievals that included the liquid water path. In the 1DVar source code file NWPSAFMod_LiquidWater.f90 the order of the arguments to the function Layers_to_LWP was incorrect. The bug has now been fixed. Also, the sample test data for SSMIS_43L ( for RTTOV11 / RTTOV12 and ifort / gfortran) were affected by the bug and these have been corrected.

For older news, see the News Archive.