The following new observations have been activated in the operational ECMWF assimilation system since April 2021.
| Observations | Main impact | Activation date |
| GOES-17 Clear-Sky Radiances (replacing GOES‑15, which has been excluded since 27 February 2020) | Tropospheric humidity and wind | 18 May 2021 |
| Scatterometer winds from HY-2B | Near-surface winds over ocean | 23 June 2021 |