| Created: | 23/05/2012 12:41:58 PM |
| Modified: | 22/06/2015 1:22:50 AM |
 Project: |
|
| Advanced: |
|
A specialized OM_Observation type used for reporting an aggregate set of forecast meteorological conditions at an Aerodrome. The result of this observation type refers 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 |
|
«FeatureType» SF_SamplingPoint Class |
Name: propertyValueProvider |
Name: featureOfInterest |
 Details:
|
||
|
MeteorologicalAerodromeForecastRecord Class |
Name: |
Name: result |
|
Details:
|
||
| Constraint | Type | Status |
| self.validTime.oclIsTypeOf( TM_Period ) | Invariant | Approved |
|
Details:
The O&M validTime must be a time period for TAF forecasts
|
||
| self.featureOfInterest.sampledFeature.oclIsKindOf( Aerodrome) | Invariant | Approved |
|
Details:
The sampled feature is always an aerodrome
|
||
| Object | Type | Connection | Direction | Notes |
| «FeatureType» ComplexSamplingMeasurement | Class | Generalization | To |