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Volume 11
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10.3390/atmos11080866
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Article

An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed

by
Javier Polanco
1,2,
Manuel Ramos
1,
Rosa M. Fitzgerald
2,* and
William R. Stockwell
2
1
Departamento de Física y Matemáticas, Universidad Autónoma de Ciudad Juárez, Avenida del Charro #450 N, Ciudad Juárez, Chihuahua 32310, Mexico
2
Department of Physics, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(8), 866; https://doi.org/10.3390/atmos11080866
Submission received: 7 July 2020 / Revised: 11 August 2020 / Accepted: 13 August 2020 / Published: 15 August 2020
(This article belongs to the Special Issue Atmospheric Aerosols in North America)
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Abstract

Highly time-resolved aerosol measurements and analysis are necessary for a proper aerosol characterization in many polluted regions, because aerosol concentrations in polluted environments can change over time scales of minutes. However, many urban measuring sites have measuring devices that provide time resolved average aerosol concentrations over a day or two at best. Light-scattering properties of mineral dust and soot particles in the El Paso-Juárez Airshed were analyzed with an improved methodology, using the T-matrix, a maximum likelihood estimator (MLE), and data from both an acoustic extinctiometer and a laser particle counter. The hourly inter-comparisons of the scattering coefficients’ results between the model and those obtained using the instruments at a wavelength of 0.87 μm show good agreement. This methodology has been applied in the El Paso-Juárez Airshed successfully, and it could be used in other cities where mineral dust and soot are major components of the aerosol concentrations.
Keywords: environment; scattering; optics; aerosol environment; scattering; optics; aerosol

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MDPI and ACS Style

Polanco, J.; Ramos, M.; Fitzgerald, R.M.; Stockwell, W.R. An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed. Atmosphere 2020, 11, 866. https://doi.org/10.3390/atmos11080866

AMA Style

Polanco J, Ramos M, Fitzgerald RM, Stockwell WR. An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed. Atmosphere. 2020; 11(8):866. https://doi.org/10.3390/atmos11080866

Chicago/Turabian Style

Polanco, Javier, Manuel Ramos, Rosa M. Fitzgerald, and William R. Stockwell. 2020. "An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed" Atmosphere 11, no. 8: 866. https://doi.org/10.3390/atmos11080866

APA Style

Polanco, J., Ramos, M., Fitzgerald, R. M., & Stockwell, W. R. (2020). An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed. Atmosphere, 11(8), 866. https://doi.org/10.3390/atmos11080866

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