| Start date | End date (short events) | Event type | Affected data | Description |
|---|---|---|---|---|
| 01/01/2020 | 01/01/2020 | Technical outage | Most of the data | A piece of code designed to cope with 2K year bug caused rejection of most of the data for 06 BC, 00 LWDA and 12 DA cycles. An emergency fix was implemented to fix the problem. |
| 01/01/2020 | 14/01/2020 | Technical outage | Small subset of Ocean in-situ data reporting in TAC: XBTs and CTDs | Due to a technical problem a small subset of Ocean in-situ data reporting in TAC (XBTs and CTDs) were rejected. This affected the NRT ocean5 data assimilation. The problem has been fixed and the missing data were re-processed. The delayed ocean5 data assimilation will not be affected. |
| 03/01/2020 | 14/01/2020 | Outage | FY-3B/MWHS | CMA requested EUMETSAT to stop the distribution of the data due to a switch over of the scan mode. At the time of the outage the data quality was nominal |
| 08/01/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist. In addition to the usual blacklist/whitelist of individual stations this update contains other significant changes: Activation of BUFR Radiosonde and PILOTs from CHINA. Activation BUFR SHIP BUOYS and deactivatation TAC counterparts. Update: The blacklist was postponed for one day to fix a small technical issue causing a small reduction of Automatic SYNOPs in few areas. Problem fixed on 09/01/2020 | |
| 09/01/2020 | Activation | Aeolus winds | After months of successful testing and improvement of the bias correction winds from Aeolus are activated. For more info please check https://www.ecmwf.int/en/about/media-centre/news/2020/ecmwf-starts-assimilating-aeolus-wind-data | |
| 13/01/2020 | Blacklist | Meteosat-11 AMV and ASR | Temporary blacklist during Meteosat-11 SEVIRI decontamination | |
| 23/01/2020 | New data monitoring | PAZ GPSRO | Monitoring of GPSRO from the Spanish satellite PAZ (https://www.wmo-sat.info/oscar/satelliteprogrammes/view/123) | |
| 30/01/2020 | Re-activation | Meteosat-11 AMVs and ASR | The data are activated further to a successful decontamination of SEVIRI. The data quality are unaffected. | |
| 31/01/2020 | 13/02/2020 | Data outage | Jason-3 (Surface wind, wave height and sea-level anomaly) | Satellite in safe mode |
| 04/02/2020 | 12/02/2020 | Data outage | FY-3C data (MWHS2 and GNOS) | FY-3C data suspended due to satellite platform maintenance |
| 10/02/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist. | |
| 11/02/2020 | Re-activation | Metop-A/IASI | Re-activation of Metop-A/IASI | |
| 11/02/2020 | 26/02/2020 | Outage | TERRASAR-X and Tandem-X GPSRO | Data absent in ECMWF system but available in other sites (ROM-SAF). Outage being investigated. Problem is caused by a change in the data encoding. Decoder updated |
| 13/02/2020 | temporary blacklist | FY-3C MWHS2 | Data came back (after days of outage) with unexplained changes of bias. The data is blacklisted temporarily. | |
| 26/02/2020 | 02/03/2020 | Data outage | Metop-C/IASI | Data unavailable due to instrument decontamination |
| 27/02/2020 | technical change | Metop-A/MHS | Due to the failure of channel 2 data is used only over ocean when passing a test based on channel 1 | |
| 27/02/2020 | Blacklist | GOES-15 CSR | Data from GOES-15 are blacklisted prior to the switch of of the satellite | |
| 04/03/2020 | New data | Metop-C/GOME-2 Ozone | Started monitoring Metop-C/GOME-2 Ozone | |
| 09/03/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist. | |
| 13/03/2020 | New data monitoring | COSMIC-2 GPSRO | Monitoring of COSMIC-2 GPSRO | |
| 25/03/2020 | Activation | COSMIC-2 GPSRO | COSMIC-2 GPSRO used in operations | |
| 01/04/2020 | 05/04/2020 | Technical issue | Sea level anomaly (SLA) | change from the data provider affected the pre-processing of SLA data used by the ocean5 data assimilation |
| 02/04/2020 | Re-activation | FY-3C MWHS2 | Re-activation of FY-3C MWHS2 after confirmation from the data provider that no further spacecraft maintenance are expected. The change of bias has been stable. No impact noticed on random errors | |
| 07/04/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist. | |
| 21/04/2020 | technical change | METAR surface pressure | QNH correction applied to METAR surface pressure (~19Pa in the USA and ~50Pa elsewhere) | |
| 22/04/2020 | Data change | S-NPP CrIS | Switch to FSR mode | |
| 17/04/2020 | New data monitoring | AFIRS | AFIRS aircraft data are being monitoring in preparation of operational use | |
| 20/04/2020 | 23/04/2020 | Blacklist | Aeolus | temporary blacklist to all bias correction to adjust to new settings |
| 29/04/2020 | New data monitoring | TAMDAR | TAMDAR aircraft data are being monitoring in preparation of operational use | |
| 11/05/2020 | New data monitoring | SPIRE GPSRO | SPIRE data monitored in the operational system ahead of activation | |
| 12/05/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist. It contains additional changes: Activation of AFIRS data, update of station catalogue, extra SYNOPS from Brazil and few migrations to BUFR Radiosondes | |
| 12/05/2020 | Activation | AFIRS aircraft data | Additional data received during the COVID-19 to improve the coverage of aircraft data | |
| 13/05/2020 | Activation | FY-3D MWRI | Activation of FY-3D MWRI in all sky mode | |
| 13/05/2020 | Activation | NOAA20 VIIRS AMVs | Activation of NOAA20 VIIRS AMVs | |
| 13/05/2020 | Activation | SPIRE GPSRO | SPIRE GPSRO activated | |
| 17/05/2020 | Outage | FY-3C GNOS | Data are not expected to come back due to the announcement by CMA on the 25th of May | |
| 25/05/2020 | 29/05/2020 | Blacklist | Aeolus | Blacklist Aeolus during telescope tests period |
| 26/05/2020 | Outage | FY-3C MWHS2 EARS | This was due to the decision by CMA to switch off HRPT due to power supply issues onboard the satellite. As a result the timeliness of MWHS2 degraded substantially | |
| 01/06/2020 | Permanent outage | FY-3B/MWHS | This was due to the decision by CMA to retire FY-3B | |
| 09/06/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist | |
| 17/06/2020 | Activation | TAMDAR | Active use of TAMDAR data | |
| 17/06/2020 | Activation | German TEMP descent data | Activation of German TEMP descent data | |
| 06/07/2020 | 10/07/2020 | Blacklist | Aeolus | Blacklist of Aeolus during a planned M1 telescope thermal control test |
| 05/07/2020 | 07/07/2020 | Technical issue | surface pressure observations | temporary switch off of the bias correction scheme |
| 08/07/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist | |
| 08/07/2020 | 22/09/2020 | Technical issue | KOMPSAT-5 GPSRO | A technical issue (associated to the number of vertical levels) preventing the processing of KOMPSAT-5. |
| 13/07/2020 | Outage | Cryosat-2 | Sea level anomaly due to on-going orbit change | |
| 15/07/2020 | Technical change | Metop-C ASCAT | Activation of bias correction for Metop-C ASCAT | |
| 28/07/2020 | Activation | MODE-S aircraft data (wind only) | Activation of MODE-S aircraft data | |
| 28/07/2020 | Technical change | Vswitch for wind from aircraft observations | A conditional correction to the V component of the wind when affected by gross errors (Known problem affecting B787 aircraft under certain conditions) | |
| 11/08/2020 | Blacklist update | In-situ data | Monthly update of in-situ data blacklist | |
| 11/08/2020 | Technical change | processing of stations using WIGOS station identifiers | processing of stations exclusively using WIGOS station identifiers | |
| 17/08/2020 | 03/09/2020 | Outage | All AQUA data (AIRS, AMSUA and MODIS AMVs) | Due to an issue with the solid state recorder (SSR) no data is being received from AQUA. The instruments appear to be working fine |
| 19/08/2020 | 26/08/2020 | Outage | GPM/GMI | Communication issue with the satellite |
| 10/09/2020 | Blocklist | AQUA/AMSUA Ch14 | Sudden increase of bias and noise of AQUA/AMSUA Ch14. Data is not used temporarily. | |
| 14/09/2020 | Update monthly data selection | in-situ data | Monthly update of in-situ data selection | |
| 15/09/2020 | Data selection update | S-NPP CrIS | reactivate S-NPP CrIS water vapour channels following migration to full spectral resolution | |
| 15/09/2020 | Technical change | AMVs | Improved AMV QC | |
| 21/09/2020 | 11/10/2020 | Blocklist | Aeolus | Exclusion of Aeolus during laser testing |
| 29/09/2020 | Technical change | Microwave sounders |
| |
| 30/09/2020 | Data blocked | Re-formatted SYNOP stream (KWBC) | These are SYNOP provide in TAC after conversion from BUFR. The data are duplicates and on occasions have inconsistent values for some parameters | |
| 01/10/2020 | Service termination | SPIRE GPSRO | Access to SPIRE GPSRO has been terminated | |
| 08/10/2020 | Data selection update | in-situ data | Monthly update of in-situ data selection. The change include temporary denial of new stations provided in the context of SEE-MHEWS-A to allow their evaluation. The update includes also the re-activation of a large number of B787 aircraft identifiers that were previously denied due to intermittent wind issues | |
| 12/10/2020 | Land surface data selection update | Surface variables: T2M, RH2M and snow | Monthly update of in-situ land surface data selection. The change include temporary denial of new stations provided in the context of SEE-MHEWS-A to allow their evaluation | |
| 02/11/2020 | Data selection update | AIRS (Channel 1019) and CrIS (Channel 457) | Channels with intermittent low data counts | |
| 10/11/2020 | Data selection update | in-situ data | Monthly update of in-situ data selection | |
| 11/11/2020 | Data resumption | Cryosat-2 SLA | We resumed using Cryosat-2 SLA after SLA data are adapted to the new satellite orbit | |
| 12/11/2020 | Land surface data selection update | Surface variables: T2M, RH2M and snow | Update of data selection for land surface data assimilation (2m temperature, 2m relative humidity and snow). This update contains few suspect observations in addition to previously excluded observations that are not improved or not reporting. Most SEE-MHEWS-A observations are activated except the ones not reporting (mainly snow) | |
| 10/11/2020 | 17/11/2020 | Data quality issues | New Aircraft data from Brazil | Bad aircraft winds over Brazil (using the WIGOS BUFR format and with identifiers starting with PP (bulletins IUAX?? from SBBR). Data stopped from SAPP initially but then stopped by the data provider |
| 18/11/2020 | 20/11/2020 | Data outage | Aeolus | Aeolus instrument test (laser cold plate temperature adjustments) |
| 25/11/2020 | New data monitored | NOAA20 OMPS ozone | https://www.ecmwf.int/en/forecasts/charts/obstat/?facets=Parameter,Ozone%3BInstrument,OMPS | |
| 01/12/2020 | Data outage | AQUA AMSUA | Issues affecting the AQUA AMSU processing | |
| 04/12/2020 | 14/12/2020 | Data outage | Aeolus (Rayleigh wind only) | Increased variability of the bias (being investigated) |
| 08/12/2020 | Data selection update | in-situ data | Monthly update of in-situ data selection | |
| 07/12/2020 | Data outage | AQUA AIRS | ||
| 09/12/2020 | 14/12/2020 | Data outage | Metop-C IASI | Metop-C IASI decontamination and onboard software update |
| 14/12/2020 | Land surface data selection update | Surface variables: T2M, RH2M and snow | ||
| 17/12/2020 | Technical change | METAR | Disabled METAR QNH correction for stations reporting in 0.01 inch Hg |
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