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首页> 外文期刊>Atmospheric Measurement Techniques >Airborne Multiwavelength High Spectral Resolution Lidar (HSRL-2) observations during TCAP 2012: vertical profiles of optical and microphysical properties of a smoke/urban haze plume over the northeastern coast of the US
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Airborne Multiwavelength High Spectral Resolution Lidar (HSRL-2) observations during TCAP 2012: vertical profiles of optical and microphysical properties of a smoke/urban haze plume over the northeastern coast of the US

机译：TCAP 2012期间的机载多波长高光谱分辨率激光雷达（HSRL-2）观测：美国东北海岸烟雾/城市烟羽的光学和微物理特性的垂直剖面

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摘要

We present measurements acquired by the world's first airborne 3 backscatter (β) + 2 extinction (α) High Spectral Resolution Lidar (HSRL-2). HSRL-2 measures particle backscatter coefficients at 355, 532, and 1064 nm, and particle extinction coefficients at 355 and 532 nm. The instrument has been developed by the NASA Langley Research Center. The instrument was operated during Phase 1 of the Department of Energy (DOE) Two-Column Aerosol Project (TCAP) in July 2012. We observed pollution outflow from the northeastern coast of the US out over the western Atlantic Ocean. Lidar ratios were 50–60 sr at 355 nm and 60–70 sr at 532 nm. Extinction-related ?ngstr?m exponents were on average 1.2–1.7, indicating comparably small particles. Our novel automated, unsupervised data inversion algorithm retrieved particle effective radii of approximately 0.2 μm, which is in agreement with the large ?ngstr?m exponents. We find good agreement with particle size parameters obtained from coincident in situ measurements carried out with the DOE Gulfstream-1 aircraft.
机译：我们介绍了世界上第一个机载3向后散射（β）+ 2消光（α）高光谱分辨率激光雷达（HSRL-2）所获得的测量结果。 HSRL-2在355、532和1064 nm处测量粒子反向散射系数，并在355和532 nm处测量粒子消光系数。该仪器是由NASA兰利研究中心开发的。该仪器于2012年7月在美国能源部（DOE）的两塔气溶胶项目（TCAP）的第一阶段进行了操作。我们观察到污染从美国东北海岸流出至西大西洋。 355 nm处的激光雷达比率为50-60 sr，532 nm处的激光雷达比率为60-70 sr。与消光有关的指纹指数平均为1.2-1.7，表明相对较小的颗粒。我们新颖的自动无监督数据反演算法检索到的粒子有效半径约为0.2μm，这与较大的手指指数一致。我们发现与通过DOE Gulfstream-1飞机进行的同时现场测量获得的粒径参数非常吻合。

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