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| Original file line number | Diff line number | Diff line change |
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| ==================================== | ||
| 1.0 - September 2013 | ||
| ==================================== | ||
| * Cloud type (CB/TCU) was moved onto CloudLayer with cloud base and cloud amount | ||
| + ABV/P and BLW/M (at least and at most) conditions are now reportable on prevailing visibility | ||
| and mean RVR | ||
| * minimumVisibilityDirection quantity now has the appropriate registry entry and markup | ||
| * METAR/SPECI runway contamination is represented as a CodeList of fixed options in the registry | ||
| instead of as an unconstrained Measure type | ||
| * Updated documentation to be explanatory rather than regulatory. "SHALL BE" and "WILL BE" | ||
| wording was replaced with alternative text | ||
| * Corrected informative notes on diagrams whose contents have changed in Amd 76 | ||
| * Fixed incorrect link from MeteorologicalAerodromeReport to its trendForecast type to the | ||
| proper type (MeteorologicalAerodromeTrendForecast) | ||
| * MeteorologicalAerodromeTrendForecast may now (correctly) reference up to three weather conditions | ||
| instead of only one | ||
|
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| ==================================== | ||
| 1.0 Release Candidate 2 - May 2013 | ||
| ==================================== | ||
| * Updated IWXXM to match anticipated changes in ICAO Annex 3 Amendment 76 | ||
| * Moved forecastPosition from VA/TC SIGMET onto SIGMET (all SIGMETs may have forecast positions) | ||
| - removed braking action from METAR/SPECI | ||
| * renamed frictionCoefficient to estimatedSurfaceFriction | ||
| - removed 1-minute minimum/maximum for RVR | ||
| + added significant wave height onto METAR/SPECI | ||
| * Package renamed from "ICAO Weather Information Exchange Model" to "ICAO Meteorological Exchange Model" | ||
| to address translation issues. The abbreviated model name "IWXXM" remains unchanged | ||
| * SIGMET amended to allow for cancellations, including supporting constraints | ||
| * TAF amended to properly allow for CORRECTED, AMENDED, and CANCELLED status with the appropriate rules | ||
| on present and missing information | ||
| * Significant updates to documentation to improve correctness and clarity | ||
| * Added support for METAR/SPECI and TAF NIL reports | ||
| * CodeLists moved from MetBasic and METCE into IWXXM | ||
| * Measure types from MetBasic were changed into GML Measure types | ||
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| * METAR, SPECI, TAF, and SIGMET now have the <<FeatureType>> stereotype | ||
| * Removed <<Type>> stereotype from a number of classes | ||
| * Corrected surface wind properties on TAF, including fixes to variable wind directions and averages | ||
| * AerodromeHorizontalVisibility fixed to no longer require a minimum visibility direction when | ||
| minimumVisibility is reported | ||
| + Added new constraint to MeteorologicalAerodromeObservationRecord to ensure that if prevailingVisibility | ||
| is less than 1500m then rvr must be reported | ||
| + Added constraint onto AerodromeObservedClouds to ensure that if amountAndHeightUnobservableByAutoSystem | ||
| is true then no cloud layers are reported | ||
| - Removed constraint on reported surface winds on METAR, SPECI, and TAF when CAVOK is reported | ||
| + Added constraint to ensure that reported clouds and weather are missing when CAVOK is true | ||
| * Renamed "Context Diagram: Present Weather" to "Context Diagram: Surface Wind" | ||
| * Fixed METAR/SPECI, TAF, and SIGMET to ensure that XML element order more closely matches that of the corresponding | ||
| ICAO Annex 3 Templates | ||
| - Removed humanReadableText from all reports | ||
| * Clarified documentation on how "TX" and "TN" maps into IWXXM | ||
| * Corrected documentation and constraint to indicate that SIGMETs are reported on FIRs, UIRs, and CTAs rather | ||
| than just FIRs | ||
| * MeteorologicalAerodromeForecastRecord amended to ensure the CAVOK constraint on horizontal visibility | ||
| refers to the correct name ("prevailingHorizontalVisibility instead of horizontalVisibility) | ||
| * METAR/SPECI amended to allow any number of runway states | ||
| * MeteorologicalAerodromeObservationRecord.recentWeather now has cardinality 0..3 | ||
| * AerodromeRunwayState.estimatedSurfaceFriction now has a constraint to restrict values between 0.0 and 0.9 | ||
| * Renamed ceilingAndVisibilityOK to cloudAndVisibilityOK on all classes | ||
| * AerodromeObservedClouds stereotype changed so it is nillable | ||
| * "Terminal Aerodrome Forecast" changed to "Aerodrome Forecast" to match current ICAO definition | ||
| - Removed HTML-like styling from many parts of the documentation to ensure proper translation to XML | ||
| + unreliableFrictionCoefficient boolean flag added to AerodromeRunwayState | ||
| * Added a boolean onto AerodromeRunwayState to support runway conditions being reported on all runways at once. | ||
| Changed the names of similar constructs on AerodromeWindShear for consistency | ||
| * Removed nilReason URIs from the model. All nil reason base URIs changed from ttp://data.wmo.int/def/nil-reason | ||
| to http://codes.wmo.int/common/nil | ||
| * Changed SAF references to mirror changes to simplified AIXM representations | ||
| - cloudType removed from CloudLayer | ||
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||
| ======================================= | ||
| 1.0 Release Candidate 1 - December 2012 | ||
| ======================================= | ||
| Initial model release including complete representations of METAR, SPECI, TAF and SIGMET | ||
| from ICAO Annex 3 Amendment 75. |
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