Meteosat service changes

During the transition phases parallel dissemination for the 0 degree service and the Rapid Scan Service (RSS) will be provided for specific periods.

Full Earth Scan (FES)

Meteosat-11 will be relocated to 0 degree longitude. In order to support user transition, there will be a four-week parallel dissemination of Meteosat-10/11 SEVIRI Level 1.5 image data and meteorological products:

• Two weeks with Meteosat-10 as prime FES spacecraft
• Two weeks with Meteosat-11 as prime FES spacecraft

See dissemination timeline below.

Meteosat-10 and Meteosat-11 orbital positions will be changing during the parallel dissemination phase. The Level-1.5 image data of both spacecraft will be rectified to 0 degree longitude.

Rapid Scan Service (RSS)

For provision of the RSS Meteosat-10 will be relocated to 9.5 deg E longitude.

In order to support user transition, there will be a two-week parallel dissemination of Meteosat-9/10 RSS SEVIRI Level 1.5 image data and meteorological products:

• One week with Meteosat-9 as prime RSS spacecraft
• One week with Meteosat-10 as prime RSS spacecraft

Meteosat-9 orbital position will be changing during the parallel dissemination phase. The Level-1.5 image data of both spacecraft will be rectified to 9.5 deg E longitude.

Dissemination timeline

The dates for the dissemination changes:

• 16–18 January 2018 — Meteosat-9 RSS monthly 48-hour data dissemination pause.
• 6 February 2018 — Start of Meteosat-10 and Meteosat-11 parallel image data and Meteorological product dissemination (with Meteosat-10 as prime FES spacecraft).
• 20 February 2018 — Meteosat-11 becomes prime FES spacecraft. Parallel Meteosat-10/11 data dissemination continues.
• 21–26 February 2018 — Meteosat-9 RSS data dissemination pause for monthly SEVIRI health and safety and due to Meteosat-9 and Meteosat-10 close orbital proximity.
• 6 March 2018 — Meteosat-10 FES image data and product dissemination stops.
• 13 March 2018 — Start of Meteosat-9 and Meteoat-10 parallel RSS image data and Meteorological product dissemination (with Meteosat-9 as prime RSS spacecraft).
• 20 March 2018 — Meteosat-10 becomes prime RSS spacecraft. Parallel Meteosat-9/10 RSS data dissemination continues.
• 27 March 2018 — Meteosat-9 RSS dissemination stops.

Note: the Meteosat-9 one-month annual RSS dissemination pause has been delayed until April 2018 after the mission swaps have been completed. The first 48-hour Meteosat-10 RSS dissemination pause (with Meteosat-9 gap filling) is planned to be 3–5 April 2018.

Relocation manoeuvre timeline

The Meteosat relocation manoeuvres, when there can be degraded Level 1.5 SEVIRI image quality, are as follows:

• 5 February 2018 — two Meteosat-11 relocation manoeuvres (12-hours apart) to start the Meteosat-11 drift from 3.4 deg West to 0 deg longitude. Level-1.5 SEVIRI image data will continue to be rectified to 0 deg during the spacecraft drift phase.
• 8 February 2018 — two Meteosat-10 relocation manoeuvres (12 hours apart) to start the Meteosat-10 drift from 0 deg to 9.5 deg East longitude. The Meteosat-10 Level 1.5 SEVIRI image data will continue to be rectified to 0 deg during the spacecraft drift phase.
• 13 February 2018 — two Meteosat-11 relocation manoeuvres (12-hours apart) to stop the Meteosat-11 drift at 0 deg longitude.
• 21 February 2018 — two Meteosat-9 relocation manoeuvres (12-hours apart) to start the Meteosat-9 drift from 9.5 deg E to 3.5 deg E longitude. Meteosat-9 RSS image data will continue to be rectified to 9.5 deg E during the spacecraft drift.
• 27 February 2018 — two Meteosat-10 relocation manoeuvres (12-hours apart) to stop the Meteosat-10 drift at 9.5 deg E longitude. There will be degraded geometric image quality during each of the manoeuvres.
• 05 March 2018 — two Meteosat-9 relocation manoeuvres (12-hours apart) to stop the Meteosat-9 drift at 3.5 deg E longitude.

Predicted manoeuvre times and manoeuvre impact on data quality will be communicated via our User Notification Service (UNS) closer to the actual manoeuvre dates.

GTS Bulletin Headers

The table shows the dates and details on the phases of the transition. It also indicates what the GTS Bulletin Headers will be. The bold, italicised two-letter codes are the first two letters of the bulletin headers.