Operational Newsletter July 2004

WORLD WEATHER WATCH
Operational Newsletter

August 2004

MEETINGS		EDITORIAL
World Weather Watch		Dear Reader, This Newsletter is disseminated free of charge by the World Meteorological Organization Secretariat. Its objective is to provide World Weather Watch (WWW) Centres with urgent notifications and a summary of the latest operational information on the World Weather Watch and Marine Meteorological Services, in particular on: The Global Observing System The Global Telecommunication System The Global Data-Processing and Forecasting System Data Management Codes Marine Meteorological Services PLEASE check our World Weather Watch home page for the most recent edition. Alternatively complete the subscription form (if you havn’t already done so) and we will contact you when the Newsletter is available.
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		GLOBAL OBSERVING SYSTEM
Acknowledgements The WMO Secretariat would like to express its appreciation to all those who have contributed material to the "Operational Newsletter".		PUBLICATIONS NO. 9: VOLUME A - OBSERVING STATIONS
		Updates to Volume A FEEDBACK for Observing network: Explanatory Note Feedback Form
		AUTOMATIC MARINE STATION
		National Programmes: Australia Canada France New Zealand United Kingdom United States of America European Group on Ocean Stations ARGOS monthly status report (due to technical difficulties the current report is unavailable)
		GLOBAL TELECOMMUNICATION SYSTEM
		Change of address: RSMC and RTH BRACKNELL, Berkshire has relocated to RSMC and RTH EXETER, Devon. The international location indicator CCCC remains as EGRR. The new address is: RSMC EXETER or RTH EXETER Meteorological Office FitzRoy Road EXETER Devon EX1 3PB UNITED KINGDOM Change in RTH focal point email: RTH New Delhi: Mr. A. K. Bhatnagar Functions and Responsibilities of the Meteorological Telecommunication Centres: see pages A.I-2, Section 2
		VOLUME C1 - CATALOGUE OF METEOROLOGICAL BULLETINS
		PART A - CATALOGUE FOR OBSERVATIONAL DATA Notification from RTH Tokyo: Advanced notification received on 30 July 2004 (see METNO MC3204.txt) Semi-annual update received on 10 August 2004 (see Volume C1) AMDAR bulletins AMDAR bulletins containing ACARS over Japanese airspace was disseminated on the GTS effective 10 August. These bulletins include all data obtained from JAL and ANA via VHF data link over Japan and will be encoded into FM42. Data below FL140 will have altitude in 333 section only and F/// in the first part. Notification from RTH Brazzaville: Advanced Notification received on 25 July 2004 (see METNO MC3604.txt) Notification from RTH Beijing: Semi-annual update received on 27 July 2004 (see Volume C1) Notification from RTH Brasilia: Semi-annual update received on 13 August 2004 (see Volume C1) Notification from RTH Moscow: Advanced notification received on 12 August 2004 (see METNO MC3404.txt) Semi-annual update received on 12 August 2004 (see Volume C1) Advanced notification received on 19 August 2004 (see METNO MC3504.txt) Semi-annual update received on 19 August 2004 (see Volume C1) Notification from RTH Offenbach: Advanced notification received on 10 August 2004 (see METNO MC3404.txt) Semi-annual update received on 10 August 2004 (see Volume C1) Notification from RTH Prague: Semi-annual update received on 4 August 2004 (see Volume C1) Notification from RTH Sofia: Semi-annual update received on 22 July 2004 (see Volume C1) Notification from RTH Exeter Semi-annual update received on 25 August 2004 (see METNO MC3604.txt) PART B - GRIB/GRID BULLETINS (where T1 of the abbreviated heading T1T2 = D, G, H, O, X or Y) Notification from RTH Offenbach: Advanced notification received on 13 August 2004 (see METNO MC3404.txt) Semi-annual update received on 13 August 2004 (see Volume C1)
		REMINDER ... Announcement of changes
		Notification from the Danish Meteorological Institute (DMI) (see METNO MC2304.txt) Announcement of changes in transmission of TEMP, CLIMAT-TEMP and SYNOP SHIP from Kalaallit Nunaat, Greenland At present the Danish Meteorological Institue distributes bulletins containing TEMP, CLIMAT-TEMP and SYNOP SHIP from Kangerlussuaq (BGSF) Kalaallit Nunaat, Greenland. Bulletins are distributed according to WMO Publication No. 9, Volume C1, and transmission takes place on an AFTN circuit to IMO, Reykjavik, Iceland, where bulletins are put on GTS. At DMI the bulletins are received on the RMDCN-line from RTH Exeter, England. As part of a rearrangement of the distribution of the bulletins, DMI will as of 1 September 2004 send the bulletins directly from Greenland to DMI Copenhagen, where the bulletins will be put on the RMDCN-line to RTH Norrköping, Sweden for further distribution on GTS. The CCCC in the bulletin heading will with the rearrangement change from BGSF to EKMI. The planned changes affects the following bulletins: UPPER AIR TEMP TTAAii CCCC IIiii ======================= US/UK/UL/UEGL04 BGSF 04320 US/UK/UL/UEGL05 BGSF 04339 US/UK/UL/UEGL06 BGSF 04360 US/UK/UL/UEGL07 BGSF 04220 US/UK/UL/UEGL08 BGSF 04270 CLIMAT TEMP CUGL01 BGSF 04220, 04270 CUGL02 BGSF 04320, 04339, 04360 SYNOP SHIP SMVD01 BGSF SHIP SIVD21 BGSF SHIP
		ADDITIONAL DATA AND PRODUCTS (related to Resolution 40 (Cg-XII))
		The following changes have been received from: Germany (effective 1 July 2004) Click here to view the complete updated file resulting from these changes.
		CODES
		MANUAL ON CODES - Global practices Changes to codes
		It is recalled that changes to FM 15-XII METAR, FM 16-XII SPECI and FM 51-XII TAF (found in Supplement 4 to Manual on Codes, Volume I.1) approved by CBS Ext. (2002), and endorsed by Executive Council in June 2003, will be implemented operationally on 3 November 2004.
		The CBS text is: "After the clarifications of the requirement by ICAO, the Commission agreed that the names METAR, SPECI or TAF should only be required at the beginning of each report, and should not be inserted at the beginning of the bulletin. The Commission recommended that new format and other changes due to Amendments 72 to ICAO Annex 3/WMO Technical Regulation [C.3.1], with a view to their operational implementation in November 2004 (See Annex 5 to Recommendation 4 CBS-Ext.(02). The Commission agreed that, in order to ensure a coordinated implementation, the dates for implementation of amendments to the aeronautical codes should be conditioned by operational constraints and should be simultaneous with the dates of implementation of all other code changes. The Commission recommended that those modifications to aeronautical codes should be implemented on the first Wednesday following 1 November 2004." (= 3 November 2004).
		ANNEX 5 to Recommendation 4 CBS-Ext. (02): MODIFICATIONS TO FM 15-XII METAR, FM 16-XII SPECI and FM 51-XII TAF for implementation on 3 November 2004 FM 15-XII METAR, FM 16-XII SPECI (a) Title. Amend the titles to read “FM 15-XII Ext. METAR Aerodrome routine meteorological report (with or without trend forecast)” and “FM 16-XII Ext. SPECI Aerodrome special meteorological report (with or without trend forecast)”. Reason: the term “selected special reports” has been deleted from ICAO Annex 3/ WMO Technical Regulations (C.3.1). The proposal would also align the titles used for METAR and SPECI with the one used for TAF Aerodrome forecast (Amendment 72 to Annex 3); (b) 15.1.1. Amend to read as follows: “The code name METAR or SPECI shall be included at the beginning of each individual report.” (Amendment 72 to Annex 3); FM 51-XII TAF (a) Code form. Add “AMD” after “TAF”; Reason: there is an aeronautical requirement to identify amended aerodrome forecasts (Amendment 72 to Annex 3); Add at end of NOTE (3): The code words “AMD” shall be included as appropriate for amended forecasts. (b) 51.1.1 Amend to read as follows: “The code name TAF shall be included at the beginning of each individual aerodrome forecast. (Amendment 72 to Annex 3); (c) 51.1.5 Amend the last sentence to read as follows: "However, in case of significant change of the clouds, all cloud groups including any significant layer(s) or masses not expected to change shall be given". Reason: to align the Manual on Codes with the ICAO Annex3/WMO Technical regulations (C.3.1).

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