The connection between hygroscopic and optical particle properties in the atmospheric aerosol

被引：15

作者：

Heintzenberg, J ^{[1
]}

Massling, A ^{[1
]}

Birmili, W ^{[1
]}

机构：

[1] Inst Tropospher Res, D-04318 Leipzig, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 19期

关键词：

D O I：

10.1029/2001GL012971

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

With the combination of a hygroscopicity tandem differential mobility analyzer (HTDMA) and an optical particle counter the relation between hygroscopic and optical properties has been investigated for 300 nm urban atmospheric particles. Systematic new features of the state of mixture of optically important submicrometer particles were revealed, Besides a high fraction of absorbing (soot) chains, the most hydrophobic 300 rim particles had a high (approximate to 30%) number fraction that is classified as "transparent spheres", which could be anything from glassy spheres to high molecular hydrophobic organic droplets. These optical modes need to be considered when using HTDMA growth factors to convert dry aerosol properties to climatically relevant ambient levels.

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收藏

页码：3649 / 3651

页数：3

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