@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . skos:member . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:altLabel "VIZ 1223 Radiosonde" , "VIZ 1223 Radiosonde"@en ; skos:broader , ; skos:definition "An instrument package in common use in the 1970s and 1980s comprising a rod thermistor (for air temperature measurements), a carbon hygristor (for humidity measurements) and an aneroid pressure sensor with a radio data transmitter. The package was attached to a balloon filled with hydrogen or helium and released to measure an atmospheric profile on the ascent and, if fitted with a parachute, the descent. The radio retransmitted LORAN-C signals allowing the balloon to be tracked giving measurements of winds."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0619" ; skos:note "accepted"@en ; skos:prefLabel "VIZ 1223 Radiosonde"@en .