Presentation on theme: "Aaron Braeckel FPAW – October 22, 2014"— Presentation transcript:
1Aaron Braeckel FPAW – October 22, 2014 IWXXM StatusAaron BraeckelFPAW – October 22, 2014
2ICAO and WMO International Civil Aviation Organization (ICAO) Sets requirements for international aviation weatherWorld Meteorological Organization (WMO)Implements requirements, manages technical infrastructure, and other duties
4XML is not for direct human consumption! TAC and XMLTraditional Alphanumeric Codes (TAC) – METAR, SPECI, TAF, SIGMET, …Useful for:Human readability (pilots, flight briefers, …)Machine readability (visualization, storage, weather model integration, …)TAC has primarily addressed human-readabilityXML aids machine-readability and can readily be transformed to many formsXML schema can be used to check message structure to ensure correctness – especially useful for data producersXML is not for direct human consumption!
5TAC Challenges External References Typographic Human languages Aerodrome (‘KDEN’), waypoints, etc.External References“AU” instead of “UA”, “N23 E1175”,Capital “O” instead of 0, etc.TypographicSIGMET 1 VALIDO / UTC - FIR SCCI - POR JET STREAM ENTRELAT 49/54S CON NUCLEO A LOS 35MFT…Human languagesPIREP: /TB MDT WIFE SAYS SVR“Other” cases
6Forecast Model Integration XML METAR ExampleWeatherphenomenaobservedXML reportcreatedby sensorReport processed and storedReport transformed for consumptionReportissuedGraphicsTAC…Forecast Model Integration
7Transition PlanUnder discussion and in development within ICAO and WMO Likely to include simultaneous TAC and XML, via conversion
8IWXXM-USThe United States files official “differences” with ICAO for METAR, SPECI, TAF, and SIGMET IWXXM-US represents those differences in XMLIWXXMIWXXM-US