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| Implementation date | Cycle | Summary of changes | Resolution/Resolution change | New species |
|---|---|---|---|---|
| 15 Dec 2022 | 47r3 | Update of the T159 background error covariance wavelet file to use the correct NWP background errors. The update leads to considerably improved NWP forecast scores. As a consequence, smaller changes to AOD and upper tropospheric and lower stratospheric ozone are also expected. | Horizontal: 40km, Vertical: 137 levels | none |
| 22 Feb 2022 | 47r3 | A fix of low-level T/q in fog conditions was introduced with the 12 UTC cycle on 22 Feb 2022 | Horizontal: 40km, Vertical: 137 levels | none |
| 12 October 2021 | 47r3 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 137 levels | none |
| 18 May 2021 (12UTC cycle) | 47r2 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 137 levels | none |
| 6 October 2020 | 47r1 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 137 levels | none |
| 9 July 2019 | 46r1 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: from 60 to 137 levels | Aerosols: nitrate and ammonium |
| 26 June 2018 | 45r1 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 60 levels | See Table 1 and 2 |
| 26 September 2017 | 43r3 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 60 levels | none |
| 24 January 2017 | 43r1 | Atmospheric composition, Meteorology | Horizontal: 40km, Vertical: 60 levels | none |
| 21 June 2016 | 41r1 | Atmospheric composition, Meteorology | Horizontal: from 80km to 40km, Vertical: 60 levels | none |
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