The effect of saturation fluctuations on droplet growth

被引：42

作者：

Kulmala, M ^{[1
]}

Rannik, U ^{[1
]}

Zapadinsky, EL ^{[1
]}

Clement, CF ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

来源：

JOURNAL OF AEROSOL SCIENCE | 1997年 / 28卷 / 08期

关键词：

D O I：

10.1016/S0021-8502(97)00015-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the atmosphere the saturation ratio of water vapour varies as a function of time and space. In the present study we have investigated the effects of fluctuations of saturation ratio on droplet (cloud condansation nuclei) growth by stochastic approach employing an advanced growth model for cloud droplets. In saturated mean conditions growth of cloud droplets is accelerated by the fluctuations of saturation ratio, and our results indicate that due to fluctuations some droplets are able to grow in undersaturated conditions. Stochastic fluctuations of saturation ratio result in appearance of bimodal particle-size distribution and this is one of the possible explanations for the observed two modal cloud droplet distribution. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：1395 / 1409

页数：15

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