The Satellite Application Facility for Numerical Weather Prediction (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
- RadSim v4.0 released - July 17, 2025
RadSim v4.0 has been released. This has been updated to work with RTTOV v14.0. New features include: support for ingest of the new NWP SAF 137L CAMS profile dataset, and also the older 60L MACC and CAMS profile datasets; support for ingest of ICON-ART model fields including the aerosol species supported by RTTOV; support for nearest-neighbour instead of (bi)linear spatial and temporal interpolation; support for Zeeman-enabled simulations; support for obs data files in netCDF format; ecCodes is now an optional dependency, only required if ingesting model fields in GRIB format. A full list of updates is here. - FY-3E HIRAS and FY-4B GIIRS Monitoring Update - July 7, 2025
The monitoring of the Chinese hyperspectral infrared sounders HIRAS on board the LEO platform FY-3E and GIIRS on board the GEO platform FY-4B are now available from the NWP SAF monitoring page: https://nwp-saf.eumetsat.int/site/monitoring/nrt-monitoring/ - AAPP update 8.15 has been released - July 1, 2025
This release includes a bug fix for Arctic Weather Satellite (AWS) processing to l1c and the addition of a new python script aapp_BUFR_quicklook.py to plot AWS BUFR data (as well as other microwave sounder BUFR data). Additionally amsua_clparams.dat has been updated, new satellites added into ‘get_tle’ script, and use of the gcc14 gfortran compiler is now supported. For details, see the Release History. - Discontinuation of DMSP SSMIS - June 27, 2025
Dear NWP SAF users, Please note, due to the service changes, the U.S. Department of Defense (DOD) will discontinue the ingest, processing, and distribution of all DOD DMSP and Navy Fleet Numerical Meteorology and Oceanography Center (FNMOC) data no later than Monday, 30 June 2025. NOAA Environmental Satellite Processing Center (ESPC) interfaces will not receive DMSP data and all data products will be suspended. Users should expert all FINE, SMOOTH, and HOUSEKEEPING data from Operational Linescan System (OLS), Special Sensor Microwave Imager Sounder (SSMIS), and all Near-Earth Space Weather instruments will be terminated. This service change and termination will be permanent. As a consequence, […] - New NWP model dataset of 100,000 atmospheric profiles from CAMS - June 5, 2025
A new extra-large set of diverse atmospheric profiles has recently been compiled by the NWP SAF and is now available to the scientific community for the first time in nearly 10 years. Comprised of a year of ECMWF Copernicus Atmospheric Monitoring Service (CAMS) forecast data on 137 levels, the profiles represent one of the most up-to-date estimates of the vertical structure of several significant meteorological variables, atmospheric gases, and aerosols. Each subset of 5000 thermodynamically consistent profiles is meticulously selected to form a microcosm of the full model, optimised for 20 important atmospheric variables. The dataset can be used to […]