NSF/NCAR C-130 3V-CPI Raw 2D-S Imagery. Version 1.0

The Three-View Cloud Particle Imager (3V-CPI) is a combination of three imaging instruments. Two of them comprise a 2D-S instrument, in which two 2D probes image particles as they pass through beams that are oriented orthogonally to each other and the airflow. If particles also lie in the intersection of the sensitive areas of the two beams, they are seen by both 2D probes. In that case, the CPI is triggered to take a high-resolution picture, via a briefly illuminated high-resolution imaging array, to provide a third image at high resolution. The probe is particularly suited to imaging ice crystals, but also provide good detection of other hydrometeors including large cloud droplets, drizzle and small rain drops, and precipitation particles. The 3V-CPI measures the size, shape and concentration of water drops and ice particles in clouds in the size range of 15-250 micrometers. This dataset contains 2D-S imagery collected by the 3V-CPI aboard the NSF/NCAR C-130 during the ICE-T project. These data have been converted to a format compatible with xpms2d, available from the EOL xpms2d download page.三视场云粒子成像仪（Three-View Cloud Particle Imager，3V-CPI）是三台成像仪器的集成组合。其中两台构成2D-S仪器：当粒子穿过与气流相互正交的光束时，两台二维探头将对其完成成像。若粒子同时处于两束光束的敏感区域交集内，则两台二维探头均可捕获该粒子。此时，3V-CPI将触发系统，通过短时照明的高分辨率成像阵列拍摄高分辨率照片，以此提供第三幅高分辨率图像。该探头尤其适用于冰晶成像，同时可对多种其他水成物实现良好探测，包括大云滴、毛毛雨、小雨滴及降水粒子。3V-CPI可测量尺寸范围为15~250微米的云内水滴与冰粒子的尺寸、形状及浓度。本数据集包含由搭载于美国国家科学基金会/国家大气研究中心（NSF/NCAR）C-130运输机的3V-CPI在ICE-T项目期间采集的2D-S成像数据。上述数据已转换为适配xpms2d的格式，可从EOL的xpms2d下载页面获取。