Particle size distribution retrieval from multiwavelength lidar signals for droplet aerosol

被引：30
|
作者：
Jagodnicka, Anna K. [1 ]
Stacewicz, Tadeusz [1 ]
Karasinski, Grzegorz [1 ]
Posyniak, Michal [2 ]
Malinowski, Szymon P. [2 ]
机构：
[1] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland
[2] Univ Warsaw, Inst Geophys, PL-02093 Warsaw, Poland
来源：
APPLIED OPTICS | 2009年 / 48卷 / 04期
关键词：
ATMOSPHERIC AEROSOL; INFORMATION-CONTENT; LIGHT-SCATTERING; BACKSCATTERING; INVERSION; PARAMETERS; RESPECT; RATIO;
D O I：
10.1364/AO.48.0000B8
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method of retrieval of the aerosol particle size distribution (APSD) from multiwavelength lidar signals is presented. Assumed distribution (usually a bimodal combination of lognormal functions) with a few free parameters is directly substituted into the lidar equations. The minimization technique allows one to find the parameters that provide the best fit of the assumed APSD by comparison of theoretically generated and experimental signals. Prior knowledge of the lidar ratio is not required. The approach was tested on a typical synthetic APSD consisting of spherical droplets. Comparison of lidar measurements with results from a condensation particle counter was also performed. For signals registered at 3-5 wavelengths from the UV to the near IR a satisfactory retrieval of synthetic APSD is possible for the particles within the 100-3000 nm range. (C) 2008 Optical Society of America
引用
收藏
页码：B8 / B16
页数：9
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