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Influence of molecular scattering models on aerosol optical properties measured by high spectral resolution lidar

机译：分子散射模型对高光谱分辨率激光雷达测量的气溶胶光学特性的影响

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摘要

The influence of molecular scattering models on aerosol optical properties measured by high spectral resolution lidar (HSRL) is experimentally investigated and theoretically evaluated. The measurements analyzed in this study were made during three field campaigns by the German Aerospace Center airborne HSRL. The influence of the respective theoretical model on spaceborne HSRL retrievals is also estimated. Generally, the influence on aerosol extinction coefficient can be neglected for both airborne and spaceborne HSRLs. However, the influence on aerosol backscatter coefficient depends on aerosol concentration and is larger than 3percent (6percent) at ground level for airborne (spaceborne) HSRLs, which is considerable for the spaceborne HSRL, especially when the aerosol concentration is low. A comparison of the HSRL measurements and coordinated ground-based sunphotometer measurements shows that the influence of the model is observable and comparable to the measurement error of the lidar system.
机译：实验研究和理论评估了分子散射模型对高光谱分辨率激光雷达（HSRL）测得的气溶胶光学特性的影响。本研究中分析的测量是在德国航空航天中心机载HSRL进行的三场野战中进行的。还估计了各个理论模型对星载HSRL检索的影响。通常，无论是机载的还是星载的HSRL，对气溶胶消光系数的影响都可以忽略。但是，对气溶胶反向散射系数的影响取决于气溶胶浓度，对于机载（星载）HSRL，其在地面水平上的影响大于3％（6％），这对于星载HSRL而言是相当大的，尤其是当气溶胶浓度较低时。对HSRL测量值和地面协调式日光计测量值的比较表明，该模型的影响是可观察到的，并且与激光雷达系统的测量误差相当。

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