Aerosol Characterization Experiment (ACE)-ASIA: In-situ Measurement of Lidar Ratio, Aerosol Extinction-to-Backscatter, and Its Dependence on Particle Size and Relative Humidity

本项目将在ACE-Asia（气溶胶表征实验）期间测量C-130飞机上的气溶胶积分光散射和180度后向散射。此外，将确定消光与后向散射比（激光雷达比），这是激光雷达数据定量解释所需的关键参数。预计它会随空气质量（取决于空气来源、气溶胶大小和化学成分）和相对湿度而变化。机载测量将提供大范围条件下的数据。气溶胶光学特性的测量，诸如此类，对于表征气溶胶及其在地球辐射平衡和气候中的作用至关重要。

In this project, aerosol integral light scattering and 180 degree backscattering will be measured from the C-130 aircraft during ACE-Asia (Aerosol Characterization Experiment). In addition, the extinction-to-backscatter ratio (lidar ratio) will be determined, a crucial parameter needed for the quantitative interpretation of lidar data. It is expected to vary with air mass (depending on source of air, aerosol size, and chemical composition) and relative humidity. Airborne measurements will provide data for a large range of conditions.Measurements of aerosol optical properties, such as these are essential for characterizing aerosols and their role in the Earth's radiative balance and thus climate.