Sakai Tetsu, Nagai Tomohiro, Zaizen Yuji, Mano Yuzo
Meteorological Research Institute, Japan Meteorological Agency, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan.
Appl Opt. 2010 Aug 10;49(23):4441-9. doi: 10.1364/AO.49.004441.
The backscattering linear depolarization ratios of major types of tropospheric aerosol particles (Asian and Saharan mineral dust, sea salt, and ammonium sulfate) were measured using a laboratory chamber for interpreting the polarization lidar measurement of tropospheric aerosols. The values obtained from Asian and Saharan mineral particles were 0.39 +/- 0.04 to 0.05 (mean +/- standard deviation) for a high number of concentrations in the supermicrometer range and 0.17 +/- 0.03 to 0.14 +/- 0.03 in the submicrometer range. The values were 0.08 +/- 0.01 for sea-salt crystals, 0.04 +/- 0.003 for ammonium sulfate crystals, and 0.01 +/- < or = 0.001 for both liquid droplets in the submicrometer range. These values can serve as a reference for estimating aerosol type using lidar measurement.
为了解释对流层气溶胶的偏振激光雷达测量结果，使用实验室腔室测量了主要类型的对流层气溶胶颗粒（亚洲和撒哈拉矿物尘埃、海盐和硫酸铵）的后向散射线性偏振比。对于超微米范围内大量浓度的亚洲和撒哈拉矿物颗粒，得到的值为0.39±0.04至0.05（平均值±标准偏差），在亚微米范围内为0.17±0.03至0.14±0.03。海盐晶体的值为0.08±0.01，硫酸铵晶体的值为0.04±0.003，亚微米范围内的液滴的值均为0.01±≤0.001。这些值可作为利用激光雷达测量估算气溶胶类型的参考。
