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- W4321021656 abstract "Aerosol lidar ratio (LR) is important for the inversion of aerosol optical characteristics. Single aerosol LR value adopted in the inversion not only causes difficulties in improving aerosol inversion accuracy but also hinders the analysis of aerosol types. In this article, a pseudo-constant method with certain universality is proposed for inverting aerosol LR profiles. Simulation results show a decrease in the mean absolute error (MAE) of the aerosol LR from 3.57% (iteration method) and 9.96% (Fernald method) to 1.82% (pseudo-constant method). In the near-surface region (< 1.5 km), the MAE of aerosol LR decreases from 4.97% (iteration) and 21.66% (Fernald) to 1.54% (pseudo-constant). Moreover, the inversion accuracy of aerosol LR obtained from pseudo-constant method is less influenced by the precision of the pre-estimated aerosol LR value than that from iteration method. Experimentally, the aerosol LR and aerosol extinction coefficient (AEC) profiles obtained from the pseudo-constant method are more accurate than those from the iteration and Fernald methods. In addition, both the simulations and experiments indicate that the pseudo-constant method has higher efficiency; the processing time is shortened from approximately 5 s/signal (iteration) to approximately 0.1 s/signal. Finally, aerosol types can be distinguished to a certain degree by combining the improved aerosol LR profile." @default.
- W4321021656 created "2023-02-17" @default.
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- W4321021656 date "2023-01-01" @default.
- W4321021656 modified "2023-10-18" @default.
- W4321021656 title "Improved Aerosol Lidar Ratio Profile by Introducing Pseudo-Constant" @default.
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- W4321021656 doi "https://doi.org/10.1109/tgrs.2023.3246050" @default.
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