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arXiv 1909.12784physics.ao-ph
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离子和带电气溶胶增长增强(PDKEEPAAA)代码:用于带电和中性气溶胶增长的numerical model

The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code: A numerical model for the growth of charged and neutral aerosols

Jacob Svensmark, Nir J. Shaviv, Martin B. Enghoff, Henrik Svensmark

摘要:

小离子的存在影响气溶胶的尺寸分布的增长动力学。特别是经常被忽视的小离子的质量影响气溶胶的增长率,这可能是重要的陆地云的形成。为此,我们开发了一个数值模型来计算一种气溶胶在电荷存在下的增长,其中明确包括离子凝聚的条款。结果表明,通过增加离子对浓度,通过这种效果,气溶胶的增长率的积极贡献,与最近的实验结果相一致。离子凝聚效应,然后比较气溶胶增长带电气溶胶凝聚,这被认为是独立的离子对浓度。模型源代码通过公共存储库提供。

英文摘要:

The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end, we develop a numerical model to calculate the growth of a species of aerosols in the presence of charge, which explicitly includes terms for ion-condensation. It is shown that a positive contribution to aerosol growth rate is obtained by increasing the ion-pair concentration through this effect, consistent with recent experimental findings. The ion-condensation effect is then compared to aerosol growth from charged aerosol coagulation, which is seen to be independent of ion-pair concentration. The model source code is made available through a public repository.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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