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積雨雲(粵拼:zik1 jyu5 wan4)係種由水滴同冰晶形成嘅混合雲,亦屬濃積雲嘅一種。通常會搞出強陣性降雨雪,亦伴有大風(或有行雷、龍捲風)等嘅天氣。
佢嘅體積比較龐大,雲頂有似絲縷啲冰晶結構,頂部多數係擴展成砧形或馬蹄形,雲底又黑又亂,有明顯起伏,有時似懸球噉。由於佢多數由上升氣流造成,所以對飛天設備有好大嘅危險同威脅性。例如螺旋槳飛機必須要兜過佢,飛得好高嘅噴氣機雖然可以穿過積雨雲,但凈限細嚿雲仔。
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