Technical Bulletins

Meteosat

Beginning in January and lasting until April 2018 several changes in the constellation of Meteosat satellites are being made. Meteosat-11 will be taken into operations and the Meteosat satellites supporting the various services will change. In this section you'll find updates on these changes.

First image from Meteosat-11 as prime 0 deg satellite

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

See Dissemination Timeline below.

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.

Last Updated:  Tuesday, 19 February 2019

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

Table 1 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.

Table 1: GTS Bulletin Headers
Details Date Meteosat-9
9.5°E > 3.5°E		 Meteosat-10
0° > 9.5°E		 Meteosat-11
3.4°W > 0°
FES parallel dissemination
(Meteosat-10 prime FES spacecraft)		 6–20 Feb RSS service from 9.5°E
IR		 0° service
IU		 0° service, parallel dissemination
IW
FES parallel dissemination
(Meteosat-11 prime FES spacecraft)		 20 Feb–6 March RSS service from 9.5°E
IR		 0° service, parallel dissemination
IW		 0° service
IU
RSS parallel dissemination
(Meteosat-9 prime RSS spacecraft)		 13–20 March RSS service from 9.5°E
IR		 RSS service from 9.5°E, parallel dissemination
IW		 0° service
IU
RSS parallel dissemination
(Meteosat-10 prime RSS spacecraft)		 20–27 March RSS service from 9.5°E, parallel dissemination
IW		 RSS service from 9.5°E
IR		 0° service
IU
Meteosat-9 FES Hot stand-by 27 March onwards Hot stand-by for 0° Service, from 3.5°E
IW		 RSS service from 9.5°E
IR		 0° service
IU

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