Response of cloud condensation nuclei (>50 nm) to changes in ion-nucleation
Response of cloud condensation nuclei (>50 nm) to changes in ion-nucleation
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DOI：
10.1016/j.physleta.2013.07.004
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发表时间：
2013-11-08
影响因子：
2.6
通讯作者：
Pedersen, Jens Olaf Pepke
中科院分区：
文献类型：
--
作者：
Svensmark, Henrik;Enghoff, Martin B.;Pedersen, Jens Olaf Pepke
在紫外线从微量的臭氧、二氧化硫和水蒸气中产生气溶胶的实验中，由伽马源电离产生的气溶胶的相对增加量从成核到直径大于50纳米（适合作为云凝结核）是恒定的。这一结果与无离子对照实验以及预测在较大颗粒尺寸时响应会下降的理论模型都相互矛盾。这一未被预测到的实验发现指向了一个当前理论模型未包含的过程，可能是离子诱导在小团簇中形成硫酸。（C）2013爱思唯尔有限公司。保留所有权利。
In experiments where ultraviolet light produces aerosols from trace amounts of ozone, sulfur dioxide, and water vapor, the relative increase in aerosols produced by ionization by gamma sources is constant from nucleation to diameters larger than 50 nm, appropriate for cloud condensation nuclei. This result contradicts both ion-free control experiments and also theoretical models that predict a decline in the response at larger particle sizes. This unpredicted experimental finding points to a process not included in current theoretical models, possibly an ion-induced formation of sulfuric acid in small clusters. (C) 2013 Elsevier B.V. All rights reserved.