The following new observations have been activated in the operational ECMWF assimilation system since October 2021.
| Observations | Main Impact | Activation date |
|---|---|---|
| Sentinel-5P NO2 retrievals | NO2 in the CAMS system | 12 October 2021 |
| Radio occultation bending angles from Sentinel-6a and GRACE-C | Temperature and winds in upper troposphere/lower stratosphere | 13 January 2022 |