A regional, size-dependent, and causal effective medium model for Asian and Saharan mineral dust refractive index spectra

Stegmann, Patrick G.; Yang, Ping

doi:10.1016/j.jaerosci.2017.10.003

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A regional, size-dependent, and causal effective medium model for Asian and Saharan mineral dust refractive index spectra

2017
By Stegmann, Patrick G. ; Yang, Ping
Source: Journal of Aerosol Science, 114, 327-341

[PDF-2.53 MB]

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Journal Title:

Journal of Aerosol Science
Personal Author:

Stegmann, Patrick G. ; Yang, Ping

Stegmann, Patrick G. ; Yang, Ping Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service)
Description:

A model is developed for the refractive index spectra of desert mineral dust. This model is applicable regionally to both Asian and Saharan dust as the largest global aerosol sources. The capability of the model further aims at representing important local features through a subdivision into northern and southern Sahara, as well as western and eastern Asia. Machine learning techniques for accelerated literature data acquisition are presented. Available refractive index spectra for individual minerals and chemical species are combined based on the Bruggeman effective medium formula. A numerical procedure for effectively solving the resulting higher-order polynomial expression is presented. The present results of the effective refractive indices are validated through the Kramers-Kronig relation; in particular, a Hilbert transform is applied to the imaginary part of the refractive index spectra.
Keywords:

[+]

Atmospheric Science Environmental Engineering Fluid Flow And Transfer Processes Mechanical Engineering Pollution
Source:

Journal of Aerosol Science, 114, 327-341
DOI:

https://doi.org/10.1016/j.jaerosci.2017.10.003
ISSN:

0021-8502
Format:

PDF
Publisher:

Elsevier BV
Document Type:

Journal Article
Funding:

Grant no. NA15NES4400003
Rights Information:

Accepted Manuscript
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:eebc9392b7003871ff41b314c331d20d282f73112d5e1c969429e16df5916280
Download URL:

https://repository.library.noaa.gov/view/noaa/57251/noaa_57251_DS1.pdf
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A regional, size-dependent, and causal effective medium model for Asian and Saharan mineral dust refractive index spectra

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