Presentation on theme: "Aaron Braeckel FPAW – October 22, 2014"— Presentation transcript:
1 Aaron Braeckel FPAW – October 22, 2014 IWXXM StatusAaron BraeckelFPAW – October 22, 2014
2 ICAO and WMO International Civil Aviation Organization (ICAO) Sets requirements for international aviation weatherWorld Meteorological Organization (WMO)Implements requirements, manages technical infrastructure, and other duties
4 XML 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!
5 TAC 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
6 Forecast Model Integration XML METAR ExampleWeatherphenomenaobservedXML reportcreatedby sensorReport processed and storedReport transformed for consumptionReportissuedGraphicsTAC…Forecast Model Integration
7 Transition PlanUnder discussion and in development within ICAO and WMO Likely to include simultaneous TAC and XML, via conversion
8 IWXXM-USThe United States files official “differences” with ICAO for METAR, SPECI, TAF, and SIGMET IWXXM-US represents those differences in XMLIWXXMIWXXM-US