: Public <<DataType>> Class
Created: 20/03/2012 11:41:35 AM
Modified: 21/06/2015 8:25:13 PM
Project:
Advanced:
An aggregation of surface wind conditions typically reported together at an aerodrome, including wind direction information, wind speed, and wind gusts.  <br /></p><p><br /></p><p>Wind direction is reported according to ICAO Annex 3 / WMO No. 49-2 Section 4.1.5.2b:<br /></p><p>"variations from the mean wind direction during the past 10 minutes is reported as follows, if the total variation is 60 or more:<br /></p><p>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;<br /></p><p>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<br /></p><p>3) when the total variation is 180 or more, the wind direction is reported as variable with no mean wind direction"<br /></p>
Attribute
Public Boolean
  variableDirection
Details:
sequenceNumber=1
xsdAsAttribute=true
Notes: When true, indicates that the wind direction is variable.  A wind direction value may still be reported
Public Angle
  meanWindDirection
Details:
quantity=http://codes.wmo.int/common/quantity-kind/windDirection
sequenceNumber=2
Notes: The observed average wind direction from which the wind is blowing over the past ten minutes.  Not reported when winds are variable
Public Velocity
  meanWindSpeed
Details:
quantity= http://codes.wmo.int/common/quantity-kind/windSpeed
sequenceNumber=3
Notes: The average observed wind speed over the past ten minutes#lt;br /#gt;#lt;/p#gt;#lt;p#gt;#lt;br /#gt;#lt;/p#gt;#lt;p#gt;ICAO Annex 3 / WMO No. 49-2:#lt;br /#gt;#lt;/p#gt;#lt;p#gt;Section 4.1.5.2a#lt;br /#gt;#lt;/p#gt;
Public Velocity
  windGust
Details:
quantity=http://codes.wmo.int/common/quantity-kind/maximumWindGustSpeed
sequenceNumber=4
Notes: The maximum wind speed observed over the past ten minutes#lt;br /#gt;#lt;/p#gt;#lt;p#gt;#lt;br /#gt;#lt;/p#gt;#lt;p#gt;ICAO Annex 3 / WMO No. 49-2:#lt;br /#gt;#lt;/p#gt;#lt;p#gt;Section 4.1.5.2c#lt;br /#gt;#lt;/p#gt;
Public Angle
  extremeClockwiseWindDirection
Details:
quantity=http://codes.wmo.int/common/quantity-kind/windDirection
sequenceNumber=5
Notes: The extreme clockwise direction from which the wind is blowing, inclusive.#lt;br /#gt;#lt;/p#gt;#lt;p#gt;#lt;br /#gt;#lt;/p#gt;#lt;p#gt;ICAO Annex 3 / WMO No. 49-2:#lt;br /#gt;#lt;/p#gt;#lt;p#gt;Section 4.1.5.2b#lt;br /#gt;#lt;/p#gt;
Public Angle
  extremeCounterClockwiseWindDirection
Details:
quantity=http://codes.wmo.int/common/quantity-kind/windDirection
sequenceNumber=6
Notes: The extreme counter-clockwise direction from which the wind is blowing, inclusive.#lt;br /#gt;#lt;/p#gt;#lt;p#gt;#lt;br /#gt;#lt;/p#gt;#lt;p#gt;ICAO Annex 3 / WMO No. 49-2:#lt;br /#gt;#lt;/p#gt;#lt;p#gt;Section 4.1.5.2b#lt;br /#gt;#lt;/p#gt;
Element Source Role Target Role
MeteorologicalAerodromeObservationRecord
Class   		Name:  
  		Name: surfaceWind
 
Details:
 
Constraint Type Status
meanWindDirection.uom = extremeClockwiseWindDirection.uom = extremeCounterClockwiseWindDirection.uom Invariant Approved
Details:
All wind UOMs must be the same
if( variableWindDirection ) meanWindDirection == NULL Invariant Approved
Details:
Wind direction is not reported when variable winds are indicated