HorizontalVisibility
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:HorizontalVisibility
An aggregation of horizontal visibility conditions typically reported together at an aerodrome, including the prevailing visibility and minimum visibility.
Properties | Definition | Type |
---|---|---|
minimumVisibilityDirection | The direction of the minimum visibility relative to the reporting station. | CodeCompassPointType |
prevailingVisibility | The greatest visibility value, observed in accordance with the definition of visibility", which is reached within at least half the horizon circle or within at least half of the surface of the aerodrome. These areas could comprise contiguous or non-contiguous sectors." | ValDistanceType |
minimumVisibility | Visibility for aeronautical purposes is the greater of: a) the greatest distance at which a black object of suitable dimensions, situated near the ground, can be seen and recognized when observed against a bright background; b) the greatest distance at which lights in the vicinity of 1 000 candelas can be seen and identified against an unlit background. | ValDistanceType |
isUnidirectionalVisibility | Indication whether the horizontalVisibility is given for a single direction or not. |
Boolean |
isPrevailingVisibilityAbove10000metres | Indication that the prevailing visibility is of at least 10000 meters. |
Boolean |
minimumVisibilityDirection
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:HorizontalVisibility@minimumVisibilityDirection
The direction of the minimum visibility relative to the reporting station.
type: CodeCompassPointType
Model | Concept |
---|---|
ICAO WXXM 3.0.0 |
minimumVisibilityDirection |
prevailingVisibility
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:HorizontalVisibility@prevailingVisibility
The greatest visibility value, observed in accordance with the definition of visibility", which is reached within at least half the horizon circle or within at least half of the surface of the aerodrome. These areas could comprise contiguous or non-contiguous sectors."
type: ValDistanceType
Model | Concept |
---|---|
ICAO WXXM 3.0.0 |
prevailingVisibility |
AIXM 5.1.1 |
visibility |
ICAO WXXM 3.0.0 |
prevailingVisibility |
ICAO WXXM 3.0.0 |
prevailingVisibility |
minimumVisibility
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:HorizontalVisibility@minimumVisibility
Visibility for aeronautical purposes is the greater of: a) the greatest distance at which a black object of suitable dimensions, situated near the ground, can be seen and recognized when observed against a bright background; b) the greatest distance at which lights in the vicinity of 1 000 candelas can be seen and identified against an unlit background.
type: ValDistanceType
Model | Concept |
---|---|
ICAO WXXM 3.0.0 |
minimumVisibility |
isUnidirectionalVisibility
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:HorizontalVisibility@isUnidirectionalVisibility
Indication whether the horizontalVisibility is given for a single direction or not.
type: Boolean