Holographic Detector for Clouds. Version 1.0

This dataset contains measurements of cloud particle size distributions collected during the ESCAPE project using an airborne holographic instrument. The HOLODEC-II is a second-generation version of a holographic detecter designed to determine the size, two-dimensional shape, and three-dimensional position of hydrometeors via digital in-line holography. Advantages vs other hydrometeor detectors are that the sample volume is not size dependent, relative positions of hydrometeors in the sample volume can be determined in three dimensions, and effects produced by shattering from the aperture edges can be identified and eliminated. Automated analysis programs have been developed to process the holograms collected and produce size distributions. HOLODEC-II has sufficient resolution to determine the sizes and locations of cloud droplets as well as ice crystals.

本数据集收录了ESCAPE项目期间借助机载全息仪器获取的云粒子粒径分布测量数据。HOLODEC-II为第二代全息探测器，通过数字同轴全息术（digital in-line holography）实现对水成物粒径、二维形态及三维空间位置的测定。相较于同类水成物探测器，其优势显著：采样体积不受粒子粒径限制；可精准获取采样体积内水成物的三维相对位置；还能识别并剔除孔径边缘粒子破碎所引发的干扰效应。目前已配套开发自动化分析程序，可对采集到的全息图像进行处理并生成粒径分布数据。HOLODEC-II具备足够高的分辨率，能够同时测定云滴与冰晶的粒径及空间位置。

搜集汇总

背景与挑战

背景概述

该数据集包含ESCAPE项目期间使用机载全息仪器HOLODEC-II收集的云粒子尺寸分布测量数据，专门用于确定水凝物的尺寸、二维形状和三维位置。其优势在于样本体积不依赖于尺寸、能识别三维相对位置并消除边缘破碎效应，具有足够分辨率测量云滴和冰晶。数据集覆盖2022年5月至7月，空间范围在纬度25°至35°和经度-100°至-90°之间，但目前不可在线获取。