Sugimoto Nobuo, Lee Choo Hie
National Instiute for Environmental Studies, Tsukuba, Ibaraki, Japan.
Appl Opt. 2006 Oct 1;45(28):7468-74. doi: 10.1364/ao.45.007468.
Lidar depolarization measurements were performed simultaneously at two wavelengths (532 and 1064 nm) in an Asian dust event. The observed particle depolarization ratio for 1064 nm was generally larger than that for 532 nm, and it was found that the mixing of Asian dust and other spherical aerosols must be taken into account. A simple two-component theory considering two types of aerosol (dust and spherical aerosols) was developed and applied to the observed data. The mixing ratio of dust and the backscatter-related Angström exponents for dust and spherical aerosols was derived. These parameters can be used to infer characteristics of the aerosols and the mixed states.
在一次亚洲沙尘事件中，同时在两个波长（532和1064纳米）下进行了激光雷达退偏振测量。观测到的1064纳米处的粒子退偏振比通常大于532纳米处的，并且发现必须考虑亚洲沙尘与其他球形气溶胶的混合情况。开发了一种考虑两种气溶胶（沙尘和球形气溶胶）的简单双组分理论，并将其应用于观测数据。得出了沙尘的混合比以及沙尘和球形气溶胶的与后向散射相关的埃斯特朗指数。这些参数可用于推断气溶胶的特征和混合状态。
