@prefix qudt: . @prefix owl: . @prefix ssd: . @prefix xsd: . @prefix skos: . @prefix rdfs: . @prefix qudt-unit: . @prefix qb: . @prefix dgu: . @prefix dct: . @prefix ui: . @prefix reg: . @prefix grib2-parameter: . @prefix qudt-quantity: . @prefix api: . @prefix vann: . @prefix prov: . @prefix foaf: . @prefix cc: . @prefix common-unit: . @prefix grib2-core: . @prefix void: . @prefix version: . @prefix bufr4-core: . @prefix rdf: . @prefix ldp: . @prefix time: . @prefix qudt-dimension: . @prefix vs: . @prefix dc: . @prefix common-core: . a skos:Concept , qudt:QuantityKind , qudt:SpaceAndTimeQuantityKind ; rdfs:label "Aerodrome mean wind speed" ; "LT-1" ; "Aeronautical quantity kinds" ; dct:description "The mean speed of the wind over the 10-minute period immediately preceding the observation. When the 10-minute period includes a marked discontinuity in the wind characteristics (1), only data after the discontinuity shall be used for obtaining mean wind speed, hence the time interval in these circumstances shall be correspondingly reduced." ; skos:notation "aerodromeMeanWindSpeed" ; skos:note "(1) A marked discontinuity occurs when there is an abrupt and sustained change in wind direction of 30° or more, with a wind speed of 5 m s-1 (10 KT) or more before or after the change, or a change in wind speed of 5 m s-1 (10 KT) or more, lasting at least two minutes." . a reg:RegisterItem ; rdfs:label "Aerodrome mean wind speed" ; dct:dateSubmitted "2014-09-03T09:53:17.921Z"^^xsd:dateTime ; dct:description "The mean speed of the wind over the 10-minute period immediately preceding the observation. When the 10-minute period includes a marked discontinuity in the wind characteristics (1), only data after the discontinuity shall be used for obtaining mean wind speed, hence the time interval in these circumstances shall be correspondingly reduced." ; reg:definition [ reg:entity ; reg:sourceGraph ] ; reg:itemClass skos:Concept , qudt:QuantityKind , qudt:SpaceAndTimeQuantityKind ; reg:notation "aerodromeMeanWindSpeed" ; reg:register ; reg:status reg:statusStable ; reg:submitter [ foaf:name "marqh (admin)" ; foaf:openid ] ; owl:versionInfo 1 .