: Public <<DataType>> Class
Created: 02/03/2012 5:00:32 PM
Modified: 11/04/2013 2:15:27 PM
Project:
Advanced:
An aggregation of runway visual range conditions for a single runway, typically reported together at an aerodrome.
Attribute
Public Distance
  meanRVR

Details:
quantity=http://codes.wmo.int/common/c-15/ae/runwayVisualRangeRvr
sequenceNumber=2
Notes: The mean recent runway visual range value observed.  This mean represents the 10 minute average for observed RVR except when the 10-minute period immediately preceding the observation includes a marked discontinuity in runway visual range values, only those values occurring after the discontinuity shall be used for obtaining mean values<br /></p><p><br /></p><p>Annex 3:<br /></p><p>Table A3-2 "RVR/RVR"<br /></p><p>Section 4.3.6.6<br /></p>
Public VisualRangeTendency
  pastTendency

Details:
sequenceNumber=3
xsdAsAttribute=true
Notes: The runway visual range tendency (up, down, none).<br /></p><p><br /></p><p>If the runway visual range values during the 10-minute period have shown a distinct tendency, such that the mean during the first 5 minutes varies by 100 m or more from the mean during the second 5 minutes of the period, this should be indicated. When the variation of the runway visual range values shows an upward or downward tendency, this should be indicated by "Up" or "Down", respectively. In circumstances when actual fluctuations during the 10-minute period show no distinct tendency, this should be indicated using "No Change?. When indications of tendency are not available, no information should be reported<br /></p><p><br /></p><p>ICAO Annex 3 / WMO No. 49:<br /></p><p>Table A3-2 Note 9<br /></p><p>Section 4.3.6.6a<br /></p>
Public RunwayDirection
  runway

Details:
sequenceNumber=1
Notes: The runway to which reported runway visual range information applies
Element Source Role Target Role
MeteorologicalAerodromeObservationRecord
Class   		Name:  
  		Name: rvr
 
Details:
RVR conditions are required if horizontal visibility or RVR is less than 1500 meters, up to a maximum of four runways