AgI-seeding should be done before the activation of most ice nuclei start, so as to enhance rainfall through increasing ice crystals content, and deleting super-cooled cloud water. 結果表明，該地區秋季對流云降水主要為冷云降水，冰晶是霰產(chǎn)生的主要來(lái)源，冰霰自動(dòng)轉化是霰產(chǎn)生的最主要方式，冰晶與霰的碰并又促進(jìn)了霰的進(jìn)一步增長(cháng)，霰是云中過(guò)冷水消耗的主要因素。
The visible satellite imageries on the day gradually revealed a low-level circulation centre drifting to the northeast, leaving the cloud bands near southeastern Hainan. 當天的可見(jiàn)光衛星云圖可見(jiàn)天鵝的低層環(huán)流中心向東北飄移，而對流云帶則停留于海南西南部。
