一种测定大气离子迁移率谱的新技术
A novel technique to determine atmospheric ion mobility spectra
摘要：
需要详细的对流层离子测量，以提高对影响云的电微物理的理解。此外，大气离子迁移率谱可用于识别导致凝结核形成的离子生长过程。然而，这些测量是罕见的，特别是在对流层，那里的大多数云的形成。描述了用于离子测量的经典仪器--吸气式圆柱形电容器的工作原理的发展，该发展使得能够从空气中的吸气式电容器的电压衰减速率中提取离子迁移率谱信息。在本文中，从历史的气球载离子计数器上升的数据将重新分析，以提取新的离子迁移率谱从简单的电压时间序列。这种数据恢复将增加可用于分析的大气离子谱的数量。
英文摘要：
Detailed tropospheric ion measurements are needed to improve understanding of the electrical microphysics affecting clouds. Additionally, atmospheric ion mobility spectra can be used to identify ion growth processes leading to condensation nucleus formation. However these measurements are rare, particularly in the troposphere where the majority of clouds form. Developments in the operating theory of the classical instrument for ion measurement, the aspirated cylindrical capacitor, are described, which enable ion mobility spectrum information to be extracted from the rate of voltage decay of the aspirated capacitor in air. In this paper, data from historical balloon-borne ion counter ascents will be reanalysed to extract new ion mobility spectra from simple voltage time series. Such data recovery will increase the amount of atmospheric ion spectra available for analysis.
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