The following new observations have been activated in the operational ECMWF assimilation system since January 2020.
| Observations | Main impact |
Activation date |
| Line-of-sight winds from Aeolus | Wind, vertically resolved | 9 January 2020 |
| Radio occultation bending angles from COSMIC-2 |
Temperature and winds in upper troposphere/lower stratosphere |
25 March 2020 |