云雾邻近区域的气溶胶地基遥感观测研究

Aerosols and cloud/fog play an important role in the global climate change research. Generally speaking, in atmosphere the boundary between aerosols and cloud/fog are vague. In the transition zone the particles are interrelated and interact, or even transform into each other. It is reported that this region is the good place where we can study the interaction of aerosols and cloud. With the sun-sky radiometer technology development, long-term ground-based observations of aerosols in the region become feasible. Therefore, the project aims at the goal of developing a new method of remote sensing of aerosols in the vicinity of cloud/fog from measurements of newly developed sun-sky radiometer. The project focus on carrying out a distributed ground-based observation experiment, identifying the transition zone based on multi-source data, evaluating and improving the data quality control procedure and inversion algorithms. Finally, the obtained optical and microphysical aerosol characteristics, with significant scientific value, will support the frontier researches on interaction mechanism between aerosols and cloud/fog and haze occurrence mechanism in China.

气溶胶和云雾在全球气候变化研究中都扮演着重要的角色。一般而言，大气环境中气溶胶和云雾之间的边界是模糊的，它们在过渡地带紧密联系，相互作用，甚至互相转化。最近研究表明，云雾邻近区域的气溶胶观测是深化对气溶胶和云的相互作用机理认识的重要途径。随着新一代太阳-天空辐射计的技术发展，云雾邻近区的气溶胶地基遥感观测具有了可行性。如何基于新仪器发展适用于云雾邻近区气溶胶的观测方法，是本项目重点关注的科学技术问题。本项目开展分布式地基遥感观测实验，研究基于多源数据的云雾邻近区识别方法，评估和改进数据质量控制流程和气溶胶参数反演算法，获得研究区的气溶胶光学和微物理特征。研究成果将为气溶胶与云相互作用和我国雾霾机理等前沿基础研究提供数据支持, 具有重要的科学价值。

气溶胶和云雾在全球气候变化研究中扮演着重要的角色，云雾邻近区域的气溶胶观测是深化对气溶胶和云的相互作用机理认识的重要途径。如何基于太阳天空辐射计技术发展适用于云雾邻近区气溶胶的观测方法，是本项目重点关注的科学技术问题。主要研究工作包括：开展了分布式地基遥感观测实验，突破了新一代太阳-天空辐射计的观测技术，建立了基于云雾邻近区多源数据识别方法，改进了气溶胶参数反演算法，以北京为例分析了云雾邻近区域气溶胶的光学和微物理特征。观测资料证明气溶胶和云雾在过渡地带紧密联系，相互作用转化，气溶胶的光学特性和粒径会发生系统性变化。本项目的研究成果将为气溶胶与云相互作用和我国雾霾机理等前沿基础研究提供数据支持。