WIGOS station identifiers WHY do we need station identifiers? WHAT is proposed? WHO is involved?
Why do we need station identifiers? To link observations and their metadata Time series Systematic errors Avoid transmission of unchanging information World Weather Watch IIiii – have run out Non-WWW How refer to “partner” systems? A 1 b w n b n b n b ** I A...I A I6I6I6I6I6I6
What is proposed? Principles No implicit meaning in station identifiers All contributing observations must have station identifier Unique – no station identifier refers to more than one station/platform Applicable to all observing systems operated by anyone Extensible – so do not need to issue new identifiers if system needs to be expanded Absorb existing systems for identifiers
Proposed structure – WIGOS Station Identifier ComponentRoleInitial Range (?) WIGOS Identifier Series Allows future expansion 0-3 Issuer of identifierAllow delegation of issuing identifiers 0-1023 Issue numberSub-delegation, or absorb historic ids 0-1023 Local IdentifierNumber for WIGOS Mixed for imported 0-999,999 10 characters
Examples – “import” WWW identifiers ExampleWIGOS Id Series Issuer of Identifier Issue Number Local Identifier Land, SI=0 0-0-0-60351 00060351 U/air, SI=0 0-1-0-57816 01057816 Buoy 0-2-5-5900191 0255900191 Ship 0-4-0-XY123AB 040XY123AB
Examples – new identifiers ExampleWIGOS Id Series Issuer of Identifier Issue Number Local Identifier UK station 0-619-3-1234546 06193123456 Canada 0-530-1-02536 0530103536 ?CTBTO? 0-891-0-WIEN 08010WIEN
Who is involved? Secretariat – transfer WWW into system Operators – provide WIGOS observation metadata for each registered station Permanent Representatives – issue (and record in WIGOS metadata “index”) Perhaps (for discussion by ICG-WIGOS) Approved international operators (eg CTBTO) Self-registration of amateurs (eg Met Office WoW) Self-registration of other operators
Summary Single system of station identifiers Unique Can absorb existing systems “meaningless” Extensible Can Delegate issuing numbers Who can issue numbers?
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