Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Improved algorithm of aerosol particle size distribution based on remote sensing data

Not Accessible

Your library or personal account may give you access

Abstract

The optical parameters (extinction or backscatter coefficients) of multi-wavelength beams can be used for the retrieval of the aerosol particle size distribution (APSD). An improved algorithm for APSD and aerosol microphysical parameters (AMPs) is studied and discussed by using only multi-wavelength extinction coefficients data. The regularized algorithm and prior value are combined for the retrieval of APSD and AMPs. The regularization algorithm, based on minimum discrepancy principle and averaging procedure, is used for the retrieval of fine-mode APSD and an averaging procedure that can achieve stable outputs is proposed. The 1% averaging result near the minimum of the discrepancy is selected and verified. Based on the inversion results of fine mode from the regularization algorithm, the lognormal distribution with a prior value (model radius) is applied to reconstruct the coarse mode of APSDs through fitting the data. The comprehensive application of the regularization algorithm and averaging process improves the stability of the inversion in the fine mode, and the use of the prior value broadens the inversion radius range of APSD. The complex refractive index need not be assumed for this method. The inversion error for different types of aerosols is analyzed and studied. The reliability of the algorithm is tested and verified by many typical APSDs and the measured APSDs by particle size spectrometer in different pollution days. The algorithm sensitivity analysis is also provided and discussed. The algorithm can obtain reliable inversion of APSD and AMPs with large radius range.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Precise size distribution measurement of aerosol particles and fog droplets in the open atmosphere

Huige Di, Zhixiang Wang, and Dengxin Hua
Opt. Express 27(12) A890-A908 (2019)

Particle size distribution retrieval from multiwavelength lidar signals for droplet aerosol

Anna K. Jagodnicka, Tadeusz Stacewicz, Grzegorz Karasiński, Michał Posyniak, and Szymon P. Malinowski
Appl. Opt. 48(4) B8-B16 (2009)

Inversion of multiwavelength Raman lidar data for retrieval of bimodal aerosol size distribution

Igor Veselovskii, Alexei Kolgotin, Vadim Griaznov, Detlef Müller, Kathleen Franke, and David N. Whiteman
Appl. Opt. 43(5) 1180-1195 (2004)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (16)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (10)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved