: Public Class
Created: 23/05/2012 10:03:30 AM
Modified: 27/03/2013 3:19:29 PM
Project:
Advanced:
A specialized Record type containing meteorological conditions for trend forecasting at an aerodrome.  This class is also related but not identical to MeteorologicalAerodromeForecastRecord which is reported on a TAF - conditions reported in trend forecasts in METAR/SPECI differ from forecast groups in a TAF.<br /></p><p><br /></p><p>When no clouds of operational significance or no weather of operational significance is predicted, the NothingOfOperationalSignificance nilReason should be used for the cloud or presentWeather association.  When no clouds were detected by the automatic observing system, the NotDetectedByAutoSystem nilReason should be used for the cloud association.<br /></p>
Element Source Role Target Role
AerodromeCloudForecast
Class   		Name:  
  		Name: cloud
 
Details:
When no clouds of operational significance are forecast and “CAVOK” is not appropriate ("NSC") it should be indicated by a missing cloud group with a nil reason of nothingOfOperationalSignificance
«DataType» AerodromeSurfaceWindTrendForecast
Class   		Name:  
  		Name: surfaceWind
 
Details:
 
«CodeList» AerodromeForecastWeather
Class   		Name:  
  		Name: forecastWeather
 
Details:
Up to one forecast weather condition.<br /></p><p><br /></p><p>The expected end of occurrence of weather phenomena ("NSW") shall be indicated by a change forecast with a missing weather group with a nil reason of nothingOfOperationalSignificance<br /></p>
Element Source Role Target Role
«FeatureType» MeteorologicalAerodromeTrendForecast
Class   		Name:  
  		Name: result
 
Details:
 
Constraint Type Status
if( cloudAndVisibilityOK ) clouds == NULL Invariant Approved
Details:
 
if( cloudAndVisibilityOK ) forecastWeather == NULL Invariant Approved
Details: