Model studies on the effect of nitric acid vapour on cirrus cloud activation

被引：0
|
作者：
Hienola, J
Kulmala, M
Laaksonen, A
机构：
[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland
[2] Univ Kuopio, Dept Appl Phys, FIN-70211 Kuopio, Finland
来源：
ATMOSPHERIC RESEARCH | 2003年 / 65卷 / 3-4期
关键词：
nitric acid vapour; cirrus cloud; droplets;
D O I：
10.1016/S0169-8095(02)00151-5
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
The effect of elevated nitric acid concentrations on cloud particle number concentrations and sizes of mixed phase cirrus cloud (containing both supercooled liquid and frozen ice particles) is studied using a detailed multicomponent condensation model. Our model calculations suggest that high nitric acid volume mixing ratios (VMRs), corresponding to upper tropospheric measurements, can increase the ice crystal number concentrations substantially especially in the case of freezing of non-activated solution droplets (as opposed to freezing of supercooled cloud droplets). This is due to increased droplet sizes caused by nitric acid absorption and the resulting uptake of water. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：235 / 250
页数：16
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