AerodromeSurfaceWind
AerodromeSurfaceWind
An aggregation of surface wind conditions typically reported together at an aerodrome, including wind direction information, wind speed, and wind gusts. Wind direction is reported according to ICAO Annex 3 / WMO No. 49-2 Section 4.1.5.2b: "variations from the mean wind direction during the past 10 minutes is reported as follows, if the total variation is 60 or more: 1) when the total variation is 60 or more and less than 180 and the wind speed is 1.5 m/s (3 kt) or more, such directional variations are reported as the two extreme directions between which the surface wind has varied; 2) when the total variation is 60 or more and less than 180 and the wind speed is less than 1.5 m/s (3 kt), the wind direction is reported as variable with no mean wind direction; or 3) when the total variation is 180 or more, the wind direction is reported as variable with no mean wind direction" Wind direction shall be given in degrees from true North. Plane angle unit of measure (uom) is "deg". A true north wind is indicated with a direction of 360. Calm wind is indicated with a direction of 0. Wind speeds and gusts, if present, shall be provided in either two units of measures: "m/s" or "[kn_i]" (knot)
| Properties | Definition | Type |
|---|---|---|
| extremeClockwiseWindDirection | The extreme clockwise direction from which the wind has varied, inclusive. This corresponds to the dxdxdx part of the reported variation dndndnVdxdxdx in TAC. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2b 1) | AngleWithNilReason |
| extremeCounterClockwiseWindDirection | The extreme counter-clockwise direction from which the wind has varied, inclusive. This corresponds to the dndndn part of the reported variation dndndnVdxdxdx in TAC. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2b 1) | AngleWithNilReason |
| meanWindDirection | The observed average wind direction from which the wind is blowing over the past ten minutes. Not reported when winds are variable. Wind direction shall be given in degrees from true North. Plane angle unit of measure (uom) is deg". A true north wind is indicated with a direction of 360. Calm wind is indicated with a direction of 0." | AngleWithNilReason |
| meanWindSpeed | The average observed wind speed over the past ten minutes ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2a Wind speeds shall be provided in either two units of measures: m/s" or "[kn_i]" (knot)." | VelocityWithNilReason |
| meanWindSpeedOperator | Indication that the mean wind speed is above or below the reported value. To report a wind speed of at least 49 meters per second, wind speed is reported as 49 meters per second and the operator is reported as above". When no operator is reported, wind speed is an exact value with identical semantics to other measured quantities." | RelationalOperator |
| variableWindDirection | When true, indicates that the wind direction is variable. A wind direction value may still be reported | Boolean |
| windGustSpeed | Variations from the mean wind speed (gusts) during the past 10 minutes. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2c Wind gusts shall be provided in either two units of measures: m/s" or "[kn_i]" (knot)." | VelocityWithNilReason |
| windGustSpeedOperator | Indication that the wind gust speed is above or below the reported value. To report a wind gust speed of at least 49 meters per second, wind gust speed is reported as 49 meters per second and the operator is reported as above". When no operator is reported, wind gust speed is an exact value with identical semantics to other measured quantities." | RelationalOperator |
Details
AerodromeSurfaceWind
AerodromeSurfaceWind
An aggregation of surface wind conditions typically reported together at an aerodrome, including wind direction information, wind speed, and wind gusts.
Wind direction is reported according to ICAO Annex 3 / WMO No. 49-2 Section 4.1.5.2b:
"variations from the mean wind direction during the past 10 minutes is reported as follows, if the total variation is 60 or more:
1) when the total variation is 60 or more and less than 180 and the wind speed is 1.5 m/s (3 kt) or more, such directional variations are reported as the two extreme directions between which the surface wind has varied;
2) when the total variation is 60 or more and less than 180 and the wind speed is less than 1.5 m/s (3 kt), the wind direction is reported as variable with no mean wind direction; or
3) when the total variation is 180 or more, the wind direction is reported as variable with no mean wind direction"
Wind direction shall be given in degrees from true North. Plane angle unit of measure (uom) is "deg". A true north wind is indicated with a direction of 360. Calm wind is indicated with a direction of 0. Wind speeds and gusts, if present, shall be provided in either two units of measures: "m/s" or "[kn_i]" (knot)
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind | Air motion relative to the Earth's surface. Unless otherwise specified, only the horizontal component is considered. |
Notes
urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:AerodromeCondition urn:aero:airm:1.0.0:LogicalModel:Subjects:Meteorology:Wind
extremeClockwiseWindDirection
AerodromeSurfaceWind.extremeClockwiseWindDirection
The extreme clockwise direction from which the wind has varied, inclusive. This corresponds to the dxdxdx part of the reported variation dndndnVdxdxdx in TAC. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2b 1)
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.extremeClockwiseWindDirection | The extreme clockwise direction from which the wind is blowing, inclusive. |
extremeCounterClockwiseWindDirection
AerodromeSurfaceWind.extremeCounterClockwiseWindDirection
The extreme counter-clockwise direction from which the wind has varied, inclusive. This corresponds to the dndndn part of the reported variation dndndnVdxdxdx in TAC. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2b 1)
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.extremeCounterClockwiseWindDirection | The extreme counter-clockwise direction from which the wind is blowing, inclusive. |
meanWindDirection
AerodromeSurfaceWind.meanWindDirection
The observed average wind direction from which the wind is blowing over the past ten minutes. Not reported when winds are variable. Wind direction shall be given in degrees from true North. Plane angle unit of measure (uom) is deg". A true north wind is indicated with a direction of 360. Calm wind is indicated with a direction of 0."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.windDirection | Direction from which wind is blowing. |
meanWindSpeed
AerodromeSurfaceWind.meanWindSpeed
The average observed wind speed over the past ten minutes ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2a Wind speeds shall be provided in either two units of measures: m/s" or "[kn_i]" (knot)."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.windSpeed | The speed of the wind. |
meanWindSpeedOperator
AerodromeSurfaceWind.meanWindSpeedOperator
Indication that the mean wind speed is above or below the reported value. To report a wind speed of at least 49 meters per second, wind speed is reported as 49 meters per second and the operator is reported as above". When no operator is reported, wind speed is an exact value with identical semantics to other measured quantities."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.maxWindSpeed | The maximum speed of the wind. |
| Wind.minWindSpeed | The minimum speed of the wind. |
Notes
CR for data concept type or make clear AIRM has modelled max and min wind speed in addition to wind speed.
variableWindDirection
AerodromeSurfaceWind.variableWindDirection
When true, indicates that the wind direction is variable. A wind direction value may still be reported
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.isVariable | Indication that the direction of the wind changes frequently. According to Annex 3 the wind is reported as variable (VRB) in local routine or special reports, in METAR and SPECI, when one of the following situations occur: - when the total variation is 60 or more and less than 180 and the wind speed is less than 1.5 m/s (3 kt), the wind direction shall be reported as variable with no mean wind direction; or - when the total variation is 180 or more, the wind direction shall be reported as variable with no mean wind direction. |
windGustSpeed
AerodromeSurfaceWind.windGustSpeed
Variations from the mean wind speed (gusts) during the past 10 minutes. ICAO Annex 3 / WMO No. 49-2: Section 4.1.5.2c Wind gusts shall be provided in either two units of measures: m/s" or "[kn_i]" (knot)."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Wind.windGust | Variation from the mean surface wind speed as defined by ICAO Annex 3. |
windGustSpeedOperator
AerodromeSurfaceWind.windGustSpeedOperator
Indication that the wind gust speed is above or below the reported value. To report a wind gust speed of at least 49 meters per second, wind gust speed is reported as 49 meters per second and the operator is reported as above". When no operator is reported, wind gust speed is an exact value with identical semantics to other measured quantities."
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| Change request | A change request is required on the AIRM. |
Notes
CR for data concept type. AIRM is missing the min and max idea here.