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

  • NWP SAF 1D-Var User Survey 2020 - March 25, 2020
    In order to help us make decisions about future developments of the NWP SAF 1D-Var, we would be grateful if you could complete a short survey. There are 13 questions about your use of the code, and your views on priorities for future developments. Please fill in the survey before 15th April 2020. You can find more information about 1D-Var on the 1D-Var pages. Survey:
  • Coronavirus (COVID-19) and NWP SAF operations - March 19, 2020
    We wish all of our users well during these difficult times. The NWP SAF continues to operate with the team now teleworking. While we aim to provide continuity of service wherever possible, our responses to issues and user requests through the Helpdesk may not always be at our normal level of performance during this current exceptional situation.
  • Database restored - March 4, 2020
    We have been experiencing issues with the site over late few weeks. We have managed to rebuild the database and hopefully the site is now functioning correctly. However, user registrations between 27th February and 11:30 today  (4th March)  have been lost. We apologise for this but ask that you recreate your accounts and if you have any problems email us at
  • 9th Analysis Report of the NWP SAF AMV Monitoring - March 3, 2020
    The 9th Analysis Report of the NWP SAF AMV monitoring has been released and is available from the Analysis Reports section of the AMV monitoring webpages. The analysis reports identify features from the monitoring statistics and document how these evolve over time. Where possible attempts are made to diagnose the cause of the difference between the AMVs and the model. This edition marks the 9th in the series and covers changes since the 14th International Winds Workshop in 2018.
  • Report on Metop-C AMSU-A, MHS and IASI radiance data quality - February 19, 2020
    A report has been released providing an initial quality assessment of the new AMSU-A, MHS and IASI instruments on Metop-C, from a NWP user perspective. The quality of the Metop-C AMSU-A, MHS and IASI observations has been assessed against simulated observations from background model fields, and compared against the same statistics for the currently assimilated Metop-A and -B AMSU-A, MHS and IASI data. These evaluations have been done for two model systems, from the Met Office and DWD. The report can be found on the Radiance data quality assessments page.

For older news, see the News Archive.