AerodromeCloud
AerodromeCloud
An aggregation of observed cloud conditions typically reported together at an aerodrome, including cloud types, cloud layers, and vertical visibility.
| Properties | Definition | Type |
|---|---|---|
| layer | The observed cloud groups, up to four may be included. When cumulonimbus clouds or towering cumulus clouds are detected by the automatic observing system and the cloud amount and the height of cloud base cannot be observed ("//////") this is indicated by a missing cloud layer with a nil reason of either notObservable if the value could not be observed due to a sensor or system failure, or notDetectedByAutoSystem if the automated system is working properly but did not observe any values | CloudLayer |
| verticalVisibility | The reported vertical visibility. Vertical visibility is defined as the vertical visual range into an obscuring medium. Measured vertical visibility shall be reported in either two units of measures: meters (m") or feet ("[ft_i]"). Note: vertical visibility is only reported in aviation-specific WMO Code-forms (FM-15 METAR, FM-16 SPECI and FM-51 TAF) thus prevailing visibility is considered to be an aviation-specific quantity. When the sky is obscured and the value of the vertical visibility cannot be determined by the automatic observing system due to a temporary failure of the system/sensor ("VV///") the vertical visibility is missing with a nil reason of notObservable" | LengthWithNilReason |
Details
AerodromeCloud
AerodromeCloud
An aggregation of observed cloud conditions typically reported together at an aerodrome, including cloud types, cloud layers, and vertical visibility.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| AerodromeCondition.cloudCondition | The cloud conditions at the aerodrome. |
Notes
Is part of MeteorologicalAerodromeObservation in IWXXM.
layer
AerodromeCloud.layer
The observed cloud groups, up to four may be included.
When cumulonimbus clouds or towering cumulus clouds are detected by the automatic observing system and the cloud amount and the height of cloud base cannot be observed ("//////") this is indicated by a missing cloud layer with a nil reason of either notObservable if the value could not be observed due to a sensor or system failure, or notDetectedByAutoSystem if the automated system is working properly but did not observe any values
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherPhenomenon.element | A phenomenon which forms an element of this phenomenon. |
Notes
In AIRM, weather phenomenon can be divided into elements
verticalVisibility
AerodromeCloud.verticalVisibility
The reported vertical visibility. Vertical visibility is defined as the vertical visual range into an obscuring medium. Measured vertical visibility shall be reported in either two units of measures: meters (m") or feet ("[ft_i]"). Note: vertical visibility is only reported in aviation-specific WMO Code-forms (FM-15 METAR, FM-16 SPECI and FM-51 TAF) thus prevailing visibility is considered to be an aviation-specific quantity. When the sky is obscured and the value of the vertical visibility cannot be determined by the automatic observing system due to a temporary failure of the system/sensor ("VV///") the vertical visibility is missing with a nil reason of notObservable"
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| AviationCondition.verticalVisibility | Maximum distance at which an observer can see and identify an object on the same vertical as himself, above or below. |
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Weather observations and or forecast for an aerodrome |