Numerical Weather Prediction

2026 Intersessional Meeting

This was held online with the following agenda:

1. Introduction
2. Review Outstanding Actions from ITSC25
3. Items for discussion – suggested by co-chairs of ITSC
   • CGMS High Level Priority Plan Discussion: Network Design
   • CGMS High Level Priority Plan Discussion: Radiative Transfer Requirements
   • Feedback to ITSC co-chairs on Machine Learning within the Working Groups
4. DBNet update (Interaction with WMO DBnet Working group, Action on impact assessment, latest usage)
5. Wis2.0 update (Simon Elliot, EUMETSAT)
6. Special topic: Presentations on IR Hyperspectral Geo status and plans from space agencies – CMA, EUMETSAT, NOAA, JMA
7. Best practice on information regarding Instrument anomalies identified by NWP monitoring (tobe discussed via email after meeting)
8. AOB

The following slide decks of the presentations can be downloaded:

• Wis2.0
• Special Topic on IR Hyperspectral GEO status and plans
  • GIIRS
  • MTG-S IRS
  • Himawari-10
  • GeoXO

In addition as part of the discussion on the network design, role of cube sats was discussed. Following on from this a recent presentation to AMS on the U.S. MWS pilot project has been shared by R. Honeyager.

And finally, one action on the NWP co-chairs is to put together a DB net page combining all the information that we have e.g. links to WMO, SAF monitoring etc. For now the links can be accessed from pt.4 on the agenda above.