利用卫星分析对流云成冰能力与繁生机制及气溶胶影响

被引:3
作者
朱延年
余兴
徐小红
刘贵华
戴进
机构
[1] 陕西省气象科学研究所
关键词
对流云; 成冰能力; 繁生机制; 气溶胶; 卫星反演;
D O I
暂无
中图分类号
P426.3 [凝结]; X513 [粒状污染物];
学科分类号
0706 ; 070601 ; 070602 ;
摘要
为了进一步了解复杂的对流云冰相过程和气溶胶的成冰作用,利用多源卫星反演得到深厚对流云晶化温度(Tg)和-5℃有效半径(re-5),结合气溶胶分类和光学厚度,通过中国及周边141个个例统计分析结果表明:(1)污染气溶胶与沙尘具有相当成冰能力,当re-5<12μm时,随气溶胶光学厚度的增加Tg变暖,成冰能力增强;(2)当re-5≥12μm时,气溶胶使滴径减小,减弱冰晶繁生作用,从而降低云成冰能力;(3)对洁净海洋对流云而言,冰晶繁生机制为主要成冰机制,而大陆性对流云繁生作用仅占20%。
引用
收藏
页码:1758 / 1764
页数:7
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