The following new observations have been activated in the operational ECMWF assimilation system during January – March 2023.
| Observations | Main impact | Activation date |
|---|---|---|
| Atmospheric Motion Vectors from GOES-18 (replacing GOES-17) | Tropospheric wind | 12 January 2023 |
| Clear Sky Radiances from GOES-18 (replacing GOES-17) | Tropospheric humidity and wind | 12 January 2023 |
| Additional SYNOP observations from Hungary | Local near-surface fields | 19 January 2023 |
| AOD from S-NPP and NOAA-20 VIIRS | Aerosol in COMPO suite | 1 February 2023 |
| Nadir O3 profiles from NOAA-20 OMPS | Ozone in COMPO suite | 1 February 2023 |
| Radiances from MWHS-2 on FY-3E | Tropospheric humidity and wind | 22 February 2023 |
| Additional SYNOP observations from Greece | Local near-surface fields | 6 March 2023 |
| Atmospheric Motion Vectors from Meteosat-10 (replacing Meteosat-11) | Tropospheric wind | 23 March 2023 |
| Additional radio occultation bending angles from Spire | Temperature and winds in upper troposphere/lower stratosphere | 28 March 2023 |
| All-Sky Radiances from Meteosat-10 (replacing Meteosat-11) | Tropospheric humidity and wind | 29 March 2023 |