Abstract

The traditional approach to inverting aerosol extinction makes use of the assumption of a constant LIDAR ratio in the entire Mie-LIDAR signal profile using the Fernald method. For the large uncertainty in the cloud optical depth caused by the assumed constant LIDAR ratio, an not negligible error of the retrieved aerosol extinction below the cloud will be caused in the backward integration of the Fernald method. A new algorithm to determine aerosol extinction below a cirrus cloud from Mie-LIDAR signals, based on a new cloud boundary detection method and a Mie-LIDAR signal modification method, combined with the backward integration of the Fernald method is developed. The result shows that the cloud boundary detection method is reliable, and the aerosol extinction below the cirrus cloud found by inverting from the modified signal is more efficacious than the one from the measured signal including the cloud-layer. The error due to modification is less than 10% taken in our present example.

© 2010 Optical Society of Korea

Optical properties of aerosol and cloud particles measured by a single-line-extracted pure rotational Raman lidar

Liang Peng, Fan Yi, Fuchao Liu, Zhenping Yin, and Yun He
Opt. Express 29(14) 21947-21964 (2021)

Iterative method to determine an averaged backscatter-to-extinction ratio in cirrus clouds

Salem Elouragini and Pierre H. Flamant
Appl. Opt. 35(9) 1512-1518 (1996)

Calibration of the 1064 nm lidar channel using water phase and cirrus clouds

Yonghua Wu, Chuen Meei Gan, Lina Cordero, Barry Gross, Fred Moshary, and Sam Ahmed
Appl. Opt. 50(21) 3987-3999 (2011)

Independent measurement of extinction and backscatter profiles in cirrus clouds by using a combined Raman elastic-backscatter lidar

Albert Ansmann, Ulla Wandinger, Maren Riebesell, Claus Weitkamp, and Walfried Michaelis
Appl. Opt. 31(33) 7113-7131 (1992)

Tropospheric aerosol extinction coefficient profiles derived from scanning lidar measurements over Tsukuba, Japan, from 1990 to 1993

Yasuhiro Sasano
Appl. Opt. 35(24) 4941-4952 (1996)