The Global Observing System
The Global Telecommunication System
The Global Data-Processing and Forecasting System
Data Management
Codes
Marine Meteorological Services

Users of the GRID products are advised to make use of the wider range of ECMWF products at 2.5x2.5 degree resolution which are disseminated in FM 92 GRIB. Details of these products including information about the GTS headers can be found on the  ECMWF web page.

Notification from RTH Melbourne:
Advanced notification received on 15 November 2004 (see METNO MC4704.txt)

Notification from RTH Beijing:
Advanced notification received on 26 October 2004 (see METNO MC4504.txt)

Notification from RTH Offenbach:
Advanced notification received on 1 November 2004 (see METNO MC4504.txt)
Advanced notification received on 17 November 2004 (see METNO MC4804.txt)

Notification from RTH Exeter
Surface Synoptic Reports - Rothera Point (WMO Station No 89062) (see METNO MC4504.txt)
The British Antarctic Survey wished to change how observational data from Rothera Point (89062) is transmitted. This affects Surface Synoptic Reports for Rothera Point (89062). Currently Surface Synoptic Reports are transmitted via DCP to Washington for insertion on the GTS (SMAA01 KWBC, SIAA01 KWBC). 

Effective Thursday 04 November 2004 at 1000 UTC reports are transmitted to Exeter and inserted onto the GTS using the following headings: SMAA01 EGRR / SIAA21 EGRR / SNAA41 EGRR.  At some point after this date Rothera Point (89062) will turn off their DCP and end transmissions to Washington.

Effective 10 Nov 04 12:00 UTC (see METNO MC4704.txt)
 
WMO Station 89065 (Fossil Bluff) is a summer only station operated by the British Antarctic Survey (BAS), open between late October and early March each year.  Synops from Fossil Bluff are inserted onto the GTS at Exeter using the same bulletin as Rothera Point. (Only main hour Synops are likely to be reported).
         (Rothera Point bulletins are SMAA01 EGRR/SIAA21 EGRR/SNAA41 EGRR).
 
WMO Station 89063 Vernadsky have their own DCP but is not currently transmitting.  They are passing their observations to Rothera Point.  BAS are trying to identify the problem at Vernadsky and if they can be resolved  they will transmit their own observation directly again. Until that time they transmit to Exeter to be inserted onto the GTS by the UK Met Office. (They are included in the SMAA01 EGRR/SIAA21 EGRR/SNAA41 EGRR).

Chapter 1 - Meteorological Broadcasts by Radiotelegraphy and Radiotelephony

Notification from Ireland:
Replace map  page 660.

Notification from United Kingdom of Great Britain and Northern Ireland:
Replace pages 815 to 856 with the following:

Information re the Coastguard broadcasts:
Radio Station: HM Coastguard Maritime Rescue Co-ordination Centres (MRCC), and Maritime Rescue Co-ordination Sub-Centres (MRSC)

Information re the NAVTEX service:
Radio Station: Maritime and Coastguard Agency – Niton NAVTEX broadcast
Radio Station: Maritime and Coastguard Agency – Portpatrick NAVTEX broadcast
Radio Station: Maritime and Coastguard Agency – Cullercoats NAVTEX broadcast

Information re the BBC output:
Radio Station:  BBC Radio 4 (lists all the official forecasts for shipping broadcast by the BBC)