…Aviation weather forecasts include airport forecasts, flight route forecasts, and airspace forecasts. Weather phenomena that have a significant adverse effect on aircraft operations are called significant weather, and ICAO defines them as thunderstorms, typhoons, strong squall lines, hail, moderate to strong turbulence, moderate to strong icing, significant mountain waves, widespread dust storms, and freezing rain. The weather elements included in aviation forecasts change dramatically in a very short time and space, so the range and time of occurrence of the phenomenon are approximate values, and represent the most likely average of a certain range of airspace and time. … *Some terminology explanations that mention "significant weather" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…航空気象予報には飛行場予報,航空路予報,空域予報がある。航空機の運航に重大な悪影響を与える気象現象をシグニフィカント・ウェザーsignificant weatherと呼び,ICAO(イカオ)では,雷電,台風,強いスコールライン,ひょう,並~強い乱気流,並~強い着氷,顕著な山岳波,広範囲の砂塵あらし,着氷性の雨と定義している。航空予報に含まれる気象要素は,時間的・空間的に非常に短い時間にはげしく変化するため,現象の起こる範囲や起時は近似値で,ある幅をもった空域や時間の最も確からしい平均を表す。… ※「significant weather」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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