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Analytic Expression for the Aerosol Mass Efficiencies for Polydispersed Accumulation Mode

Cited 4 time in wos
Cited 4 time in scopus
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Title
Analytic Expression for the Aerosol Mass Efficiencies for Polydispersed Accumulation Mode
Other Titles
다중크기 분포 특성을 가진 대조입자 산란의 수치해석
Authors
Jung, Chang H.
Um, Junshik
Bae, Soo Ya
Yoon, Young Jun
Lee, Seoung Soo
Lee, Ji Yi
Kim, Yong Pyo
Subject
Environmental Sciences & Ecology
Keywords
Analytical approach; Mass scattering efficiency; Mass absorption efficiency;; Polydisperse aerosol particles; Mie theory
Issue Date
2018-06
Citation
정창훈, et al. 2018. "Analytic Expression for the Aerosol Mass Efficiencies for Polydispersed Accumulation Mode". AEROSOL AND AIR QUALITY RESEARCH, 18(12): 1503-1514.
Abstract
Aerosol mass efficiencies for extinction, scattering, and absorption are important parameters to understand aerosol optical properties. Although the mass efficiency is functions of the refractive index and particle size distribution, due to the complexity of the efficiency, mass efficiency parameters are usually regarded as a size independent and assumed to depend mainly on the chemical composition of aerosols. In this study, we calculated the mass efficiencies of polydispersed aerosols based on different aerosol types. An analytical approach to the approximated formula of the mass efficiency of each chemical species was developed and evaluated by fitting the results to those of the Mie theory that calculated the optical properties of chemical species based on the refractive index and size. We used the lognormal size distributions and external mixture approximations that represent the polydispersity of aerosol particles. Size ranges of 0.5?2.5 μm in the geometric mean diameter were considered for five different chemical species. The parameters of fitting curves were generalized for polydispersed aerosols as functions of the geometric mean diameter and the geometric standard deviation. The results of the newly developed analytic approach showed a good agreement with those of the Mie theory. The proposed approach provides an effective means to estimate the mass extinction efficiency of polydispersed multi-component aerosols
URI
https://repository.kopri.re.kr/handle/201206/10861
DOI
http://dx.doi.org/10.4209/aaqr.2018.02.0067
Appears in Collections  
2018-2018, Arctic permafrost environment change monitoring and prediction method developments (18-18) / Lee, Bang Yong (PN18081)
2016-2018, Arctic permafrost environment change monitoring and prediction method developments (16-18) / Lee, Bang Yong (PN16081; PN17081; PN18081)
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