| Start date | End date (short events) | Event type | Affected data | Description |
|---|---|---|---|---|
| 04/01/2023 | Data stream stopped | GOES-17 | GOES-17 replaced by GOES-18 | |
| 09/01/2023 | New data monitoring | GOES-18 CSR | Data will be monitored for few days and then activated to replace GOES-17 CSR | |
| 12/01/2023 | Data activation | GOES-18 AMVs and CSR | ||
| 12/01/2023 | Monthly data selection update | In-situ data | ||
| 12/01/2023 | Data blocklisted | Metop-B AMSUA Channel 7 | The channel affected by erratic noise increase | |
| 11/01/2023 | Outage | AQUA/AIRS and AURA/MLS | Authentication issue on data provider servers. | |
| 15/01/2023 | New data | SYNOPs from Greece | Extra SYNOP stations from Greece (over 400) | |
| 19/01/2023 | 19/01/2023 | Outage | Aeolus | Aeolus data temporarily excluded due to onboard issues with the GPS |
| 19/01/2023 | New data | SYNOPs from Hungary | Extra Synops from Hungary (over 100) and increased temporal resolution (to 10 minutes) for existing SYNOP stations | |
| 15/02/2023 | New data monitored | MWHS2/FY-3E | Data to be monitored. Activation expected soon | |
| 15/02/2023 | Re-activation | MWHS2/FY-3D (channel 2-7) | Data is re-activated | |
| 21/02/2023 | 02/03/2023 | Outage | Aeolus | Instrument anomaly. Update: 02/03/2023: Data are back and the quality is consistent with the pre-outage situation. |
| 22/02/2023 | Activation | FY-3E/MWHS-2 | ||
| 25/02/2023 | 01/03/2023 | Outage | AQUA/AIRS | pre-processing issues due to software handling of dates. Solved |
| 06/03/2023 | Data selection update | In-situa data | Update of in-situ observations data selection. A large number of extra stations from Greece is activated. | |
| 16/03/2023 | Data increase | AMDAR data from China | A large increase of data from Chinese AMDAR. The quality of the new data is very poor | |
| 21/03/2023 | Data stream stopped | MET-11 AMVs and ASR | MET-10 is replacing MET-11 for the provision of 0 degree service | |
| 22/03/2023 | Activation | MET-10 AMVs | MET-10 is replacing MET-11 for the provision of 0 degree service | |
| 23/03/2023 | Passive monitoring | MET-10 ASR | Data will be monitoring for a short while | |
| 28/03/2023 | Activation | SPIRE UCAR Stream | Active Assimilation of Spire data processed by UCAR | |
| 29/03/2023 | Activation | MET-10 ASR | ||
| 29/03/2023 | Blocklist | Chinese AMDAR data | A subset of Chinese AMDAR data is excluded due to poor quality (see wind statistics) | |
| 30/03/2023 | 03/04/2023 | Outage | Ocean in-situ data | Outage of OCEAN5 in-situ data due to technical issues caused by a bad coding of a platform |
| 04/04/2023 | Monitoring | SNOTEL | Passive monitoring of SNOW depth observations from USA | |
| 13/04/2023 | 31/05/2023 | Outage | SYNOP and Radiosondes from Mexico | All in-situ data missing from Mexico due to telecommunication issues |
| 01/05/2023 | Data stream stopped | Aeolus | End of mission. Data will continue to be monitored till data ingestion stops | |
| 05/05/2023 | 08/06/2023 | Blocklist | Metop-B GOME2 | Retrieval issues impacted the ozone analysis |
| 19/05/2023 | Blocklist | SNPP CrIS | ||
| 27/06/2023 | Model upgrade | 48R1 cycle upgrade | Several changes to data usage Implementation of IFS Cycle 48r1 | |
| 04/07/2023 | Data selection update | In-situa data | Update of in-situ observations data selection | |
| 05/07/2023 | New data monitored | NOAA-21 ATMS | Data to be monitored. | |
| 05/07/2023 | Activation | NOAA-20 OMPS Ozone | Data activated to provide O3 profile information for NWP | |
| 05/07/2023 | Data usage change | NOAA-18 and Metop-C AMSUA | Updated error files for the AMSU-A instruments on NOAA-18 and Metop-C, due to increasing instrument noise | |
| 26/07/2023 | Technical change (bug fix) | GOES from Met10 and MET-9 | Bug in 48R1 leading to reduced counts of MSG ASR radiances | |
| 23/08/2023 | Activation | NOAA-21 ATMS | Activation of NOAA-21 ATMS after a period of evaluation | |
| 07/09/2023 | New data passive monitoring | PlanetIQ GNSS-RO | Passive monitoring of PanetIQ GNSS-RO | |
| 12/09/2023 | Activation | PlanetIQ GNSS-RO | Activation of PanetIQ GNSS-RO | |
| 13/09/2023 | Data selection update | In-situa data | Update of in-situ observations data selection | |
| 27/09/2023 | New data passive monitoring | NOAA-21 CrIS | Passive monitoring of NOAA-21 CrIS | |
| 09/10/2023 | Data selection update | In-situa data | Update of in-situ observations data selection (4D-var and LDAS) | |
| 10/10/2023 | Blocklist | AQUA AIRS Channel 1115 | Blocklisting of this channel due to sudden noise increase | |
| 17/10/2023 | Blocklist | SARAL Wave height | Some of the data are corrupted and need to be blacklisted | |
| 07/11/2023 | 14/11/2023 | Blocklist | GPM/GMI | temporary blocklist during satellite orbital manoeuvre |
| 07/11/2023 | Data selection update | In-situa data | Update of in-situ observations data selection (4D-var and LDAS) | |
| 21/11/2023 | Re-activation | MODE-S re-activated and box thinning for other aircraft observations | ||
| 07/12/2023 | New data monitored | SNOTEL observations | SNOTEL observations from USA are being monitored | |
| 21/12/2023 | data volume increase | PlanetIQ GNSS-RO | Substantial increase of GNSS-RO from PlanetIQ. |
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