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Freezing drizzle : ウィキペディア英語版 | Freezing drizzle
Freezing drizzle is drizzle that freezes on contact with the ground or an object at or near the surface. Its METAR code is FZDZ. ==Formation== Freezing drizzle is formed in low level stratus type clouds when vertical motion is weak. It consists of relatively small drops, light in nature. Freezing drizzle generally occurs when drizzle forms in an airmass at below freezing temperatures but warmer than -10 °C (12 °F). At such a temperature, the water droplets stay supercooled as there are few ice nuclei to change them to ice crystals (see freezing rain). In winter arctic conditions it can happen at even lower surface temperatures as the air is even cleaner.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Freezing drizzle」の詳細全文を読む
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