【Emily】「交叉雲」唔係天機因飛機 天文台:引擎熱氣遇冷空氣

[2024.11.30] 發表
鰡m虹h上空,可見超大鴷璊e雲。(天文台fb)

【明報專訊】最近天清氣朗、藍天白雲,前日好多人鬗悛襯ㄗ鴞n大鵅u交叉雲」,天文台小編噚日出帖,好搞笑話「唔通個天都唔鍾意我?」小編跟住解釋,呢個唔係咩上天啟示,其實係飛機留低鵅u足[」。原來當飛機引擎噴出嚗鰨藇y遇上高空鴽N空氣,水氣會冷卻凝結成小水滴或冰晶,就會形成一條條凝結尾[,亦即係大家所熟悉麰蜀鰶部F而鶷釵h航線鰝聾切a橫交錯,就會形成十字等唔同圖案,共同創造出獨一無二麊聾今e作喇。

天文台之後仲好似阿媽咁長氣,話下周初至中期氣溫會逐漸回升,但預料另一股東北季候風會鬗U周後期抵達華南沿岸,天氣將再次轉涼,叫大家千祈唔好鬆懈保暖呀!

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