| Created: | 23/05/2012 12:41:58 PM |
| Modified: | 09/04/2013 4:24:06 PM |
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A specialized OM_Observation type used for reporting an aggregate set of forecast meteorological conditions at an Aerodrome. The result of this observation type shall refer to an entity of type MeteorologicalAerodromeForecastRecord.<br /></p><p><br /></p><p>MeteorologicalAerodromeForecast enforces the following additional constraints:<br /></p><p><ul><li>The sampled feature must be an Aerodrome</li><br /></p><p></ul><br /></p><p>This class is also related but not identical to MeteorologicalAerodromeTrendForecast which is reported on a METAR/SPECI - conditions reported in trend forecasts in METAR/SPECI differ from forecast groups in a TAF.<br /></p><p><br /></p><p>The TAF forecast group from/to variants (FM, TL, AT, etc.) are represented on the OM_Observation validTime, which is always an instance of TM_Period. When there is only an instant at which a condition occurs, the start and end time are the same<br /></p>
- Associations To
- Constraints
- Other Links
| Element | Source Role | Target Role |
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MeteorologicalAerodromeForecastRecord Class |
Name: |
Name: result |
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| Constraint | Type | Status |
| self.validTime.oclIsTypeOf( TM_Period ) | Invariant | Approved |
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Details:
The O&M validTime must be a time period for TAF forecasts
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| self.featureOfInterest.sampledFeature.oclIsKindOf( Aerodrome) | Invariant | Approved |
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Details:
The sampled feature is always an aerodrome
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| Object | Type | Connection | Notes |
| «FeatureType» ComplexSamplingMeasurement | Class | Generalization |