Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types
Results from the University of Toronto continuous flow diffusion chamber at ICIS 2007: instrument intercomparison and ice onsets for different aerosol types
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多伦多大学连续流扩散室在 ICIS 2007 上的结果：不同气溶胶类型的仪器比对和冰起始
DOI：
10.5194/acp-11-31-2011
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发表时间：
2011
影响因子：
6.3
通讯作者：
J. Abbatt
中科院分区：
文献类型：
--
作者：
Z. Kanji;P. DeMott;O. Möhler;J. Abbatt
抽象的。多伦多大学连续流扩散室 (UT-CFDC) 在国际冰核测量系统比较研讨会 (ICIS 2007) 上用于研究异质冰核，该研讨会也是 2007 年 9 月 14 日至 28 日举行的第四届冰核研讨会。研讨会的目标之一是使用相同的气溶胶样品源和制备方法对不同的冰核测量技术进行相互比较。气溶胶样本包括四种类型的沙漠矿物尘埃、石墨烟灰颗粒以及活的和死的细菌细胞 (Snomax®)。本文重点介绍 UT-CFDC 结果，并与科罗拉多州 CFDC 和 AIDA 膨胀室等既定传统技术进行比较。不同仪器之间发现了良好的一致性，但存在一些具体差异，尤其是在低温下，这可能是由于仪器之间定义冰形成的开始方式和不同的固有停留时间的差异所致。结果发现，当结冰效率基于最低起始相对湿度时，Snomax® 颗粒效率最高，其次是沙漠灰尘，最后是烟灰。对于所有气溶胶，仅在 T 中观察到沉积模式冻结
Abstract. The University of Toronto continuous flow diffusion chamber (UT-CFDC) was used to study heterogeneous ice nucleation at the International Workshop on Comparing Ice Nucleation Measuring Systems (ICIS 2007) which also represented the 4-th ice nucleation workshop, on 14–28 September 2007. One goal of the workshop was to inter-compare different ice nucleation measurement techniques using the same aerosol sample source and preparation method. The aerosol samples included four types of desert mineral dust, graphite soot particles, and live and dead bacterial cells (Snomax®). This paper focuses on the UT-CFDC results, with a comparison to techniques of established heritage including the Colorado State CFDC and the AIDA expansion chamber. Good agreement was found between the different instruments with a few specific differences, especially at low temperatures, perhaps due to the variation in how onset of ice formation is defined between the instruments and the different inherent residence times. It was found that when efficiency of ice formation is based on the lowest onset relative humidity, Snomax® particles were most efficient followed by the desert dusts and then soot. For all aerosols, deposition mode freezing was only observed for T
影响因子：
5.2
作者：
M. Eastwood;S. Cremel;Michael B. Wheeler;B. Murray;É. Girard;A. Bertram
通讯作者：
M. Eastwood;S. Cremel;Michael B. Wheeler;B. Murray;É. Girard;A. Bertram