The SPectrometer for Ice Nuclei (SPIN): an instrument to investigate ice nucleation
The SPectrometer for Ice Nuclei (SPIN): an instrument to investigate ice nucleation
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DOI：
10.5194/amt-9-2781-2016
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发表时间：
2016-01-01
影响因子：
3.8
通讯作者：
Cziczo, Daniel James
中科院分区：
文献类型：
--
作者：
Garimella, Sarvesh;Kristensen, Thomas Bjerring;Cziczo, Daniel James
冰核分光光度计（SPIN）是由位于Boulder，CO的Droplet Measurement Technologies制造的市售冰核粒子（INP）计数器。SPIN是基于苏黎世冰核室和便携式冰核室的具有平行板几何形状的连续流扩散室。这项研究提出了使用SPIN仪器的标准描述，并强调了以更先进的方式分析测量结果的方法。它表征和描述了SPIN室的行为，报告了实验室测量的数据，并量化了与测量相关的不确定性。用硫酸铵作实验，研究了潮解霾液滴的均匀冻结和液滴穿透。用高岭石、NX伊利石和银化进行了非均质冰成核实验。SPIN成核的结果进行了比较，从文献中。还提出了一种用于分析SPIN光学粒子计数器的去偏振数据的机器学习方法（作为高级用途）。总的来说，我们报告说，SPIN能够重现以前的INP计数器测量。
The SPectrometer for Ice Nuclei (SPIN) is a commercially available ice nucleating particle (INP) counter manufactured by Droplet Measurement Technologies in Boulder, CO. The SPIN is a continuous flow diffusion chamber with parallel plate geometry based on the Zurich Ice Nucleation Chamber and the Portable Ice Nucleation Chamber. This study presents a standard description for using the SPIN instrument and also highlights methods to analyze measurements in more advanced ways. It characterizes and describes the behavior of the SPIN chamber, reports data from laboratory measurements, and quantifies uncertainties associated with the measurements. Experiments with ammonium sulfate are used to investigate homogeneous freezing of deliquesced haze droplets and droplet breakthrough. Experiments with kaolinite, NX illite, and silver iodide are used to investigate heterogeneous ice nucleation. SPIN nucleation results are compared to those from the literature. A machine learning approach for analyzing depolarization data from the SPIN optical particle counter is also presented (as an advanced use). Overall, we report that the SPIN is able to reproduce previous INP counter measurements.