Chemical composition and droplet size distribution of cloud at the summit of Mount Tai, China
Chemical composition and droplet size distribution of cloud at the summit of Mount Tai, China
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中国泰山山顶云的化学成分和液滴尺寸分布
DOI：
10.5194/acp-17-9885-2017
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发表时间：
2017-08
影响因子：
6.3
通讯作者：
Herrmann Hartmut
中科院分区：
文献类型：
--
作者：
Li Jiarong;Wang Xinfeng;Chen Jianmin;Zhu Chao;Li Weijun;Li Chengbao;Liu Lu;Xu Caihong;Wen Liang;Xue Likun;Wang Wenxing;Ding Aijun;Herrmann Hartmut
2014年7月至10月在泰山山顶对39个云样的化学成分和24个云事件的液滴大小分布进行了研究。分析了无机离子、有机酸、金属、HCHO、H2O2、硫（IV）、有机碳和元素碳以及pH和电导率。云水的酸度从2007-2008年报道的pH值3.86 （Guo et al., 2012）显著下降到本研究的pH值5.87。2007-2008年硝态氮和铵态氮浓度均呈上升趋势，但铵态氮的过度补偿导致平均pH值升高。微物理性质分析表明，泰山地区云滴均小于26.0 µm，大部分在6.0 ~ 9.0 µm之间。最大液滴数浓度（Nd）与7.0 µm的液滴尺寸相关。高液态水含量（LWC）有利于形成较大的云滴，扩大了云滴的尺寸分布。云滴与大气气溶胶表现出强烈的相互作用。更高的PM2。随着云滴数量的增加，水溶离子浓度升高，尺寸变小。较低的pH值可能出现在较高的pm2.5浓度下。云是大气中可溶物质的重要储存库。在估计云相中可溶组分的浓度时，应考虑云水的稀释效应。
The chemical composition of 39 cloud samples and droplet size distributions in 24 cloud events were investigated at the summit of Mt. Tai from July to October 2014. Inorganic ions, organic acids, metals, HCHO, H2O2, sulfur(IV), organic carbon, and elemental carbon as well as pH and electrical conductivity were analyzed. The acidity of the cloud water significantly decreased from a reported value of pH 3.86 during 2007–2008 (Guo et al., 2012) to pH 5.87 in the present study. The concentrations of nitrate and ammonium were both increased since 2007–2008, but the overcompensation of ammonium led to an increase in the mean pH value. The microphysical properties showed that cloud droplets were smaller than 26.0 µm and most were in the range of 6.0–9.0 µm at Mt. Tai. The maximum droplet number concentration (Nd) was associated with a droplet size of 7.0 µm. High liquid water content (LWC) values could facilitate the formation of larger cloud droplets and broadened the droplet size distribution. Cloud droplets exhibited a strong interaction with atmospheric aerosols. Higher PM2. 5levels resulted in higher concentrations of water-soluble ions and smaller sizes with increased numbers of cloud droplets. The lower pH values were likely to occur at higher PM2. 5concentrations. Clouds were an important sink for soluble materials in the atmosphere. The dilution effect of cloud water should be considered when estimating concentrations of soluble components in the cloud phase.
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DOI：
10.1007/s11270-007-9467-0
发表时间：
2007-08
期刊：
Water, Air, and Soil Pollution
影响因子：
--
作者：
M. Zapletal;D. Kuňák;P. Chroust
通讯作者：
M. Zapletal;D. Kuňák;P. Chroust
影响因子：
6.3
作者：
Peng Xu;Y. Liao;Yun Lin;C. X. Zhao;Chao Yan;M. Cao;G. S. Wang;S. Luan
通讯作者：
Peng Xu;Y. Liao;Yun Lin;C. X. Zhao;Chao Yan;M. Cao;G. S. Wang;S. Luan
上海冬季亚微米城市气溶胶的尺寸分辨吸湿性
影响因子：
5.5
作者：
Ye, Xingnan;Ma, Zhen;Hu, Dawei;Yang, Xin;Chen, Jianmin
通讯作者：
Chen, Jianmin
影响因子：
5.5
作者：
Jinfang Yin;Donghai Wang;G. Zhai
通讯作者：
Jinfang Yin;Donghai Wang;G. Zhai
DOI：
10.1007/s11270-009-0307-2
发表时间：
2010-01
期刊：
Water, Air, & Soil Pollution
影响因子：
--
作者：
Koichi Watanabe;H. Honoki;A. Iwai;Atsushi Tomatsu;Kiyoshi Noritake;Nobuko Miyashita;Keiko Yamada
通讯作者：
Koichi Watanabe;H. Honoki;A. Iwai;Atsushi Tomatsu;Kiyoshi Noritake;Nobuko Miyashita;Keiko Yamada