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EA:  OBSERVED_VISIBILITY_REPORT_TYPE

Status: STD 2005/06/07
Code: 908
Concept definition: The type of observed visibility that is reported.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [JMCDM, "VISIBILITY-OBSERVATION type code"]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
SUBM
2009/06/04		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 AIRCRAFT_HORIZ_VISIBILITY The horizontal <<VISIBILITY_DISTANCE>> reported by an <AIRCRAFT>.   IR [JMBL, "visibility type":A]  
SUBM
2009/06/04		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 AIRCRAFT_SLANT_VISIBILITY The <<VISIBILITY_DISTANCE>> along a slant line between an <AIRCRAFT> to the <PLANETARY_SURFACE> of the <EARTH>.   IR [JMBL, "visibility type":L]  
SUBM
2009/06/04		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 MAXIMUM Maximum observed <<VISIBILITY_DISTANCE>> during reporting period.   IR [JMBL, "visibility type":M]  
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 MINIMUM Minimum observed <<VISIBILITY_DISTANCE>> during the reporting period. 1 IR [FMH1, Section 6]  
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 PRVL The visibility that is considered representative of visibility conditions at the station; the greatest distance that can be seen throughout at least half the horizon circle, not necessarily continuous; prevailing. 2 IR [FMH1, 6.3.a] [JMCDM, "VISIBILITY-OBSERVATION type code":P]
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 PRVL_VAR_HIGH The maximum <<VISIBILITY_DISTANCE>> reported if the <<<PRVL>>> rapidly increases and decreases by 800 metres (approximately 0,5 miles) or more, during the time of observation, and the <<VISIBILITY_DISTANCE>> is less than 4 828 metres (approximately 3 miles); prevailing variable high [FMH1, 6.4.5]. 3 IR [JMCDM, "VISIBILITY-OBSERVATION type code":PVH]  
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 PRVL_VAR_LOW The minimum <<VISIBILITY_DISTANCE>> reported if the <<<PRVL>>> rapidly increases and decreases by 800 metres (approximately 0,5 miles) or more, during the time of observation, and the <<VISIBILITY_DISTANCE>> is less than 4 828 metres (approximately 3 miles); prevailing variable low [FMH1, 6.4.5]. 4 IR [JMCDM, "VISIBILITY-OBSERVATION type code":PVL]  
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 SECTOR The <<VISIBILITY_DISTANCE>> in a specific <DIRECTION> that represents at least a 45 arc degree sector of the horizon circle. 5 IR [FMH1, 6.3.b] [JMCDM, "VISIBILITY-OBSERVATION type code":S]
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 TOWER The prevailing <<VISIBILITY_DISTANCE>> determined from airport traffic <CONTROL_TOWER> at stations that also report surface-level visibility. 6 IR [FMH1, 6.3.d] [JMCDM, "VISIBILITY-OBSERVATION type code":T]
STD
2005/06/07		 OBSERVED_VISIBILITY-
_REPORT_TYPE		 TOWER_PRVL_HIGH The maximum <<VISIBILITY_DISTANCE>> reported if the <<<TOWER>>> rapidly increases and decreases by 800 metres (approximately 0,5 miles) or more, during the time of observation and the <<VISIBILITY_DISTANCE>> is less than 4 828 metres (approximately 3 miles); tower prevailing high. 7 IR [FMH1, Section 6]  
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