Cloud droplet number concentration, calculated from the MODIS (Moderate resolution imaging spectroradiometer) cloud optical properties retrieval and gridded using different sampling strategies

This dataset contains cloud droplet number concentrations, gridded to 1 by 1 degree resolution using a variety of sampling methods to select valid retrievals. Data from the MODIS (Moderate resolution imaging spectroradiometer) instruments on both the Terra (morning overpass) and Aqua (Afternoon overpass) satellites are available (indicated by a T or A in the filename). This product is gridded using the MODIS collection 6 definition of a day. These sampling methods have been compared against multiple flight campaigns, see Gryspeerdt et al., The impact of sampling strategy on the cloud droplet number concentration estimated from satellite data. Atmos. Meas. Tech. 2022."

本数据集包含云滴数浓度数据，通过多种采样方法筛选有效反演结果，将数据网格化至1°×1°的分辨率。搭载于Terra（上午过境）与Aqua（下午过境）两颗卫星的中分辨率成像光谱仪（Moderate resolution imaging spectroradiometer）所获取的数据均已纳入本数据集，文件名中以字母T或A分别标识对应两颗卫星。本数据集采用MODIS第六版数据集合（Collection 6）的单日定义完成网格化处理。上述采样方法已与多组航空观测实验开展对比验证，相关细节可参阅Gryspeerdt等学者2022年发表于《大气测量技术》（Atmos. Meas. Tech.）的论文《采样策略对卫星反演云滴数浓度的影响》。

搜集汇总

背景与挑战

背景概述

该数据集基于MODIS卫星云光学特性反演，提供了全球1x1度网格化的云滴数浓度数据，涵盖Terra和Aqua卫星的上午与下午观测。其特点是采用多种采样策略进行网格化处理，且这些方法已通过飞行实验验证，适用于大气云微物理研究。