AIRMETEvolvingCondition
AIRMETEvolvingCondition
Conditions that indicate the presence of a specific AIRMET phenomenon such as mountain obscuration or a thunderstorm, along with expected changes to the phenomenon such as intensity, speed, and direction. These conditions are reported with OBS/FCST conditions on all AIRMET types. TC TOP (ABV and BLW) conditions are represented by the vertical component of the geometry. For example: CB TOP FL500 is represented as a missing lowerLimit and an upperLimit of 500FL.
| Properties | Definition | Type |
|---|---|---|
| approximateLocation | Indicator of whether the location of phenomena is approximate. If not reported locations are not approximate | Boolean |
| cloudBase | The cloud base of reported clouds. Only used with an AIRMET reporting cloud phenomenon. Height of cloud base shall be given in either m" (metres) or "[ft_i]" (feet). Cloud base and top may differ from but should be within the AIRMET base and top which are reported in airspace upper and lower limits." | Distance |
| cloudBaseReference | The reference surface used for the value of the cloud base. For example, Mean Sea Level, Ground, standard pressure, etc.. | CodeVerticalReferenceBaseType |
| cloudTop | The cloud top of reported clouds. Only used with an AIRMET reporting cloud phenomenon. Height of cloud top shall be given in either m" (metres) or "[ft_i]" (feet). Cloud base and top may differ from but should be within the AIRMET base and top which are reported in airspace upper and lower limits." | Distance |
| cloudTopReference | The reference surface used for the value of the cloud base. For example, Mean Sea Level, Ground, standard pressure, etc.. | CodeVerticalReferenceBaseType |
| directionOfMotion | The expected direction of movement of a meteorological condition. When no movement is expected, this is a http://www.opengis.net/def/nil/OGC/0/inapplicable nilReason and the speedOfMotion will be 0. Direction of motion to shall be given in degrees from true North. Plane angle unit of measure (uom) is deg"." | AngleWithNilReason |
| geometry | The expected geographic region(s) affected by the reported phenomenon at a particular time (thunderstorms, volcanic ash, etc.). This geometry covers all combinations of phenomenon historically reported in ICAO Annex 3 / WMO No. 49-2: a boundary with a base and top, a TC centre position, and a VA line with a width | AirspaceVolume |
| intensityChange | The expected change in intensity for the reported meteorological condition (e.g., intensifying, weakening, or no change) determined at the time of AIRMET analysis based on the current state of the meteorological condition | AIRMETExpectedIntensityChange |
| speedOfMotion | The expected speed of movement of a meteorological condition. When no movement is expected, this will have a value of 0 and directionOfMotion will have a http://www.opengis.net/def/nil/OGC/0/inapplicable nilReason. Speed of movement shall be given in either km/h" or "[kn_i]" (knot)." | Velocity |
| surfaceVisibility | The surface visibility. Only used with SFC VIS AIRMETs. Horizontal surface visibility unit of measure shall be given as m" (metre). ICAO Annex 3 / WMO No. 49-2: Appendix 6 Section 2.1" | Distance |
| surfaceVisibilityCause | The weather condition(s) causing reduced visibility. | WeatherCausingVisibilityReduction |
| surfaceWindDirection | The widespread surface wind direction. Only used with SFC WIND AIRMETs. Unit of measure shall be given as deg" in degrees from true North. A true north wind is indicated with a direction of 360." | Angle |
| surfaceWindSpeed | The widespread surface wind speed. Only used with SFC WIND AIRMETs. Surface wind speed unit of measure shall be given as m/s" or "[kn_i]" (knot)." | Velocity |
Details
AIRMETEvolvingCondition
AIRMETEvolvingCondition
Conditions that indicate the presence of a specific AIRMET phenomenon such as mountain obscuration or a thunderstorm, along with expected changes to the phenomenon such as intensity, speed, and direction. These conditions are reported with OBS/FCST conditions on all AIRMET types. TC TOP (ABV and BLW) conditions are represented by the vertical component of the geometry. For example: CB TOP FL500 is represented as a missing lowerLimit and an upperLimit of 500FL.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherCondition | Weather observations or forecast for an area of interest. |
Notes
Container? Or, at most basic: urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:WeatherCondition
approximateLocation
AIRMETEvolvingCondition.approximateLocation
Indicator of whether the location of phenomena is approximate. If not reported locations are not approximate
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Change request | A change request is required on the AIRM. |
cloudBase
AIRMETEvolvingCondition.cloudBase
The cloud base of reported clouds. Only used with an AIRMET reporting cloud phenomenon. Height of cloud base shall be given in either m" (metres) or "[ft_i]" (feet). Cloud base and top may differ from but should be within the AIRMET base and top which are reported in airspace upper and lower limits."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherPhenomenon.base | Altitude of the lowest level of the description of a weather phenomenon. |
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A hydrometeor consisting of minute particles of liquid water or ice, or of both, suspended in the free air and usually not touching the ground. It may also include larger particles of liquid water or ice and non-aqueous liquid or solid particles such as those present in fumes, smoke and dust. |
cloudBaseReference
AIRMETEvolvingCondition.cloudBaseReference
The reference surface used for the value of the cloud base. For example, Mean Sea Level, Ground, standard pressure, etc..
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| CodeVerticalReferenceType | A code indicating the reference for a vertical distance. Two series of values exist: 1) real distance: from GND, from the MSL, from the WGS-84 ellipsoid; 2) distance based on a difference of pressures, according to the standard atmosphere. |
cloudTop
AIRMETEvolvingCondition.cloudTop
The cloud top of reported clouds. Only used with an AIRMET reporting cloud phenomenon. Height of cloud top shall be given in either m" (metres) or "[ft_i]" (feet). Cloud base and top may differ from but should be within the AIRMET base and top which are reported in airspace upper and lower limits."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherPhenomenon.top | Altitude of the highest level of the description of a weather phenomenon. |
|
|
A hydrometeor consisting of minute particles of liquid water or ice, or of both, suspended in the free air and usually not touching the ground. It may also include larger particles of liquid water or ice and non-aqueous liquid or solid particles such as those present in fumes, smoke and dust. |
Notes
Cloud is a type of WeatherPhenomenon
cloudTopReference
AIRMETEvolvingCondition.cloudTopReference
The reference surface used for the value of the cloud base. For example, Mean Sea Level, Ground, standard pressure, etc..
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| CodeVerticalReferenceType | A code indicating the reference for a vertical distance. Two series of values exist: 1) real distance: from GND, from the MSL, from the WGS-84 ellipsoid; 2) distance based on a difference of pressures, according to the standard atmosphere. |
directionOfMotion
AIRMETEvolvingCondition.directionOfMotion
The expected direction of movement of a meteorological condition. When no movement is expected, this is a http://www.opengis.net/def/nil/OGC/0/inapplicable nilReason and the speedOfMotion will be 0. Direction of motion to shall be given in degrees from true North. Plane angle unit of measure (uom) is deg"."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherPhenomenon.movement | The movement of the weather phenomenon. |
geometry
AIRMETEvolvingCondition.geometry
The expected geographic region(s) affected by the reported phenomenon at a particular time (thunderstorms, volcanic ash, etc.). This geometry covers all combinations of phenomenon historically reported in ICAO Annex 3 / WMO No. 49-2: a boundary with a base and top, a TC centre position, and a VA line with a width
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherCondition.contour | A contour used to outline a particular weather situation within the forecast or observation. |
intensityChange
AIRMETEvolvingCondition.intensityChange
The expected change in intensity for the reported meteorological condition (e.g., intensifying, weakening, or no change) determined at the time of AIRMET analysis based on the current state of the meteorological condition
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Change request | A change request is required on the AIRM. |
Notes
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:Codelists:CodeChangeIndicatorType
speedOfMotion
AIRMETEvolvingCondition.speedOfMotion
The expected speed of movement of a meteorological condition. When no movement is expected, this will have a value of 0 and directionOfMotion will have a http://www.opengis.net/def/nil/OGC/0/inapplicable nilReason. Speed of movement shall be given in either km/h" or "[kn_i]" (knot)."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| MovementDescription.speed | Speed of the movement of the meteorological phenomenon. |
surfaceVisibility
AIRMETEvolvingCondition.surfaceVisibility
The surface visibility. Only used with SFC VIS AIRMETs. Horizontal surface visibility unit of measure shall be given as m" (metre). ICAO Annex 3 / WMO No. 49-2: Appendix 6 Section 2.1"
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| AviationCondition.horizontalVisibility | The greatest horizontal distance at which selected objects can be seen, identified, and/or measured with instrumentation. |
surfaceVisibilityCause
AIRMETEvolvingCondition.surfaceVisibilityCause
The weather condition(s) causing reduced visibility.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| WeatherCondition.phenomenon | The phenomenon of relevance for the weather condition. |
Notes
Lots of repititions in codelists. AIRM should do a analysis to see if fully covered.
surfaceWindDirection
AIRMETEvolvingCondition.surfaceWindDirection
The widespread surface wind direction. Only used with SFC WIND AIRMETs. Unit of measure shall be given as deg" in degrees from true North. A true north wind is indicated with a direction of 360."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.windDirection | Direction from which wind is blowing. |
surfaceWindSpeed
AIRMETEvolvingCondition.surfaceWindSpeed
The widespread surface wind speed. Only used with SFC WIND AIRMETs. Surface wind speed unit of measure shall be given as m/s" or "[kn_i]" (knot)."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.windSpeed | The speed of the wind. |