Development of an Airborne Cloud Water Sampler

基于飞机的云水收集系统将在DYCOMS-II（海洋层积云动力学和化学）现场项目中开发、测试并部署在C-130飞机上。该设计改进了之前基于飞机的收集器，提供了一个自动收集系统，能够获得多个具有良好特征的云水样本进行化学分析。轴流旋风系统提供了有效的分离云滴从环境气流。由旋转流动产生的离心力将云滴移到管道壁上，在那里它们积聚并通过位于叶片下游的提取槽被移走。在实地研究中收集的云水样本将进行化学分析。这些资料将用于研究云处理对气溶胶粒子的影响，以及气溶胶的物理和化学性质对云形成的影响。

An aircraft-based cloud water collection system will be developed, tested, and deployed on a C-130 aircraft during the DYCOMS-II (Dynamics and Chemistry of Marine Stratocumulus) field program. The design improves upon previous aircraft-based collectors by offering an automated collection system that is capable of obtaining multiple, well-characterized cloud water samples for chemical analysis. An axial flow cyclone system provides efficient separation of cloud drops from the ambient air stream. Centrifugal force resulting from the rotational flow acts to remove cloud drops to the duct wall, where they accumulate and are removed through an extraction slot located downstream of the vanes.Cloud water samples collected in the field study will be analyzed chemically. These data will be used to investigate the effects of cloud processing on aerosol particles and the influence of aerosol physical and chemical properties on cloud formation.